This page is a directory of the official US federal and state government pages I use when planning an RV trip. Every link points to a .gov domain or a state-operated public agency. There are no third-party safety summaries, no commercial RV-info sites, and no forum aggregations on this page — only the authoritative source for each category. If a state does not publish something publicly, I say so rather than fabricate it.

The page is organized by state, with five categories per state where the official sources exist:

• Low bridges / clearance restrictions — most states only release this via their oversize permit process, so the link usually points to that process
• RV weight, length, and licensing laws — state DMV / Department of Motor Vehicles, including CDL thresholds and towing rules
• Propane and hazmat tunnel restrictions — the operating tunnel authority's page (states without restricted tunnels are marked N/A)
• Real-time road conditions — state 511 system or DOT live alerts
• State parks and overnight camping — state parks department reservation page

Federal & Cross-State Resources

• Hours of Service & interstate trucking rules: https://www.fmcsa.dot.gov/regulations/hours-service — FMCSA's official hours-of-service regulations page; relevant for RVers towing heavy combos that may trip CDL thresholds.
• National Weather Service travel forecast: https://www.weather.gov/ — NWS homepage with active alerts, radar, and per-location forecasts for trip planning.
• NPS / Recreation.gov federal park camping: https://www.recreation.gov/ — Federal reservation portal for over 3,600 facilities including NPS, USFS, BLM, USACE campgrounds.
• FMCSA hazardous materials routing (bonus): https://www.fmcsa.dot.gov/regulations/hazardous-materials — Reference for hazmat / propane rules that apply on interstate routes.

Jump to a state

States A–Z

Alabama

• Low bridges: https://www.dot.state.al.us/publications.html — ALDOT publications page; no public statewide low-clearance bridge inventory is published — drivers must consult ALDOT directly or use ALGO Traffic for active restrictions.
• Weight/licensing laws: https://www.alea.gov/dps/driver-license/license-and-id-cards/driver-licenses-classes-endorsements-and-restrictions — Alabama Law Enforcement Agency page on license classes, including CDL thresholds (26,001 lb GVWR) and towing classifications.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Alabama.
• Real-time conditions: https://www.algotraffic.com/ — ALDOT/ALEA traveler info system with cameras, incidents, and restrictions (state's official 511 replacement; alabama.gov-affiliated).
• State parks/camping: https://www.alapark.com/camping — Alabama State Parks (operated by Alabama Dept. of Conservation & Natural Resources) camping info and reservation portal.

Alaska

• Low bridges: https://dot.alaska.gov/ — Alaska DOT&PF main site; no public state-level bridge clearance inventory — consult ADOT&PF or use 511 for active restrictions.
• Weight/licensing laws: https://dmv.alaska.gov/credential-services/commercial-drivers-license-cdl/ — Alaska DMV CDL page covering thresholds and license types for heavy combinations.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://511.alaska.gov/ — Alaska 511 traveler info system, road conditions, cameras, and weather alerts.
• State parks/camping: https://dnr.alaska.gov/parks/ — Alaska Division of Parks & Outdoor Recreation main page (campsite listings + ReserveAmerica link for reservable sites).

Arizona

• Low bridges: https://azdot.gov/projects/current-road-restrictions — ADOT current road restrictions page; height/weight restrictions posted as active; no comprehensive bridge inventory published.
• Weight/licensing laws: https://azdot.gov/motor-vehicles/driver-services/driver-license-information/commercial-driver-license — ADOT MVD page on CDL requirements including towing thresholds.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://az511.gov/ — Arizona 511 traveler info, cameras, incidents, restrictions, and border wait times.
• State parks/camping: https://azstateparks.com/reserve/ — Arizona State Parks reservation portal (operated by AZ State Parks Department).

Arkansas

• Low bridges: https://www.idrivearkansas.com/ — IDrive Arkansas live restrictions map; ARDOT does not publish a separate public bridge inventory.
• Weight/licensing laws: https://www.dfa.arkansas.gov/driver-services/ — Arkansas Department of Finance & Administration driver services page (CDL info under license classes).
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.idrivearkansas.com/ — ARDOT's official IDrive Arkansas traveler info system (cameras, conditions, construction).
• State parks/camping: https://www.arkansasstateparks.com/reservations — Arkansas State Parks reservation system (operated by Arkansas Department of Parks, Heritage & Tourism).

California

• Low bridges: https://dot.ca.gov/programs/traffic-operations/45-buses-motorhomes — Caltrans 45-foot bus & motorhome restriction map (the closest California has to a public route-restriction inventory for large RVs).
• Weight/licensing laws: https://www.dmv.ca.gov/portal/driver-education-and-safety/educational-materials/fast-facts/ffdl-05-driver-license-classes-and-fees/ — California DMV non-commercial Class A/B requirements (trailer over 10,000 lbs or motorhome over 40 ft requires non-commercial Class B).
• Propane/tunnel restrictions: https://dot.ca.gov/caltrans-near-me/district-4/d4-projects/d4-caldecott-tunnel-upgrade — Caltrans Caldecott Tunnel page; California restricts certain hazmat through specific tunnels — confirm with Caltrans before transit.
• Real-time conditions: https://quickmap.dot.ca.gov/ — Caltrans QuickMap, the official statewide traveler info portal (subsumes the 511 function in CA).
• State parks/camping: https://www.parks.ca.gov/reservations — California State Parks camping reservation info (booking via ReserveCalifornia).

Colorado

• Low bridges: https://www.codot.gov/business/permits — CDOT oversize/overweight permit page; no public list of low-clearance bridges, but mountain pass and tunnel restrictions are listed via COtrip.
• Weight/licensing laws: https://dmv.colorado.gov/commercial-drivers-license — Colorado DMV CDL info including towing weight thresholds.
• Propane/tunnel restrictions: https://www.codot.gov/business/hazmat-routing/code-ccr-601-8-hazmat-rules-for-eisenhower-johnson-memorial-tunnel — CDOT official rule covering hazmat/propane escort requirements through the Eisenhower-Johnson Memorial Tunnel.
• Real-time conditions: https://www.cotrip.org/ — COtrip, Colorado's official 511 traveler info system.
• State parks/camping: https://cpw.state.co.us/camping — Colorado Parks & Wildlife camping page (43 state parks, reservations via CPWshop.com).

Connecticut

• Low bridges: https://portal.ct.gov/dot/travel-gateway/roads-and-highways/maps — CTDOT roads & highways maps page; no public statewide low-bridge inventory — verify specific restrictions with CTDOT directly.
• Weight/licensing laws: https://portal.ct.gov/dmv/commercial-driver-services — Connecticut DMV commercial driver services page for CDL thresholds and towing rules.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://cttravelsmart.org/ — CT Travel Smart, CTDOT's official traveler info site (cameras, travel times).
• State parks/camping: https://portal.ct.gov/deep/state-parks/camping — Connecticut DEEP state parks camping page (reservations via ReserveAmerica).

Delaware

• Low bridges: https://deldot.gov/Traffic/travel_advisory/ — DelDOT travel advisory page; no public bridge inventory — active restrictions posted as advisories.
• Weight/licensing laws: https://www.dmv.de.gov/services/driver_services/cdl/dr_cdl.shtml — Delaware DMV CDL page covering license classes and weight thresholds.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Delaware.
• Real-time conditions: https://deldot.gov/Traffic/ — DelDOT traffic page with travel advisories, cameras, and message signs.
• State parks/camping: https://destateparks.com/Camping — Delaware State Parks camping reservation portal (operated by DE Division of Parks & Recreation).

District of Columbia

• Low bridges: https://ddot.dc.gov/ — DDOT main page; DC publishes no public low-bridge inventory — RV operators should consult DDOT for specific route concerns.
• Weight/licensing laws: https://dmv.dc.gov/page/commercial-drivers-license-cdl — DC DMV CDL page covering license classes and CDL requirements.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions in DC (no major hazmat-restricted tunnels under DDOT).
• Real-time conditions: https://ddot.dc.gov/page/getting-around-2 — DDOT getting around page (DC routes through 511virginia.org for regional incident data).
• State parks/camping: N/A — No state park system in DC; nearest is Rock Creek Park (NPS) — see https://www.nps.gov/rocr/

Florida

• Low bridges: https://www.fdot.gov/maintenance/bridges — FDOT bridges page; FDOT does not publish a consumer-facing low-clearance bridge list — verify routes via FL511 or contact FDOT.
• Weight/licensing laws: https://www.flhsmv.gov/driver-licenses-id-cards/commercial-driver-licenses/ — Florida Department of Highway Safety & Motor Vehicles CDL page; covers towing thresholds and license classes.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://fl511.com/ — Florida 511, FDOT's official statewide traveler info system.
• State parks/camping: https://www.floridastateparks.org/reservation-information — Florida State Parks reservation page (booking at reserve.floridastateparks.org).

Georgia

• Low bridges: https://www.dot.ga.gov/DriveSmart/SafetyOperation — GDOT safety & operations page; Georgia does not publish a public low-bridge inventory — check 511GA for active restrictions.
• Weight/licensing laws: https://dds.georgia.gov/commercial-license-information — Georgia Department of Driver Services commercial license page for CDL thresholds.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://511ga.org/ — 511GA, Georgia DOT's official traveler info system with cameras and HERO/CHAMP roadside assist.
• State parks/camping: https://gastateparks.org/Reservations — Georgia State Parks reservations (operated by GA Dept. of Natural Resources).

Hawaii

• Low bridges: https://hidot.hawaii.gov/highways/visitor/ — Hawaii DOT visitor info page; no public bridge inventory — Hawaii's interstate system is limited and clearance issues are rare for RVs.
• Weight/licensing laws: https://hidot.hawaii.gov/highways/visitor/safe-and-courteous-driving-on-hawaii-highways/ — Hawaii DOT driving rules page; CDL specifics at https://highways.hidot.hawaii.gov/mvso (Motor Vehicle Safety Office).
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Hawaii.
• Real-time conditions: https://goakamai.org/ — GoAkamai, Hawaii DOT's official traveler info site (Oahu and Maui freeway conditions).
• State parks/camping: https://dlnr.hawaii.gov/dsp/camping-lodging/ — Hawaii Division of State Parks camping & lodging info (new reservation portal: https://explore.ehawaii.gov).

Idaho

• Low bridges: https://itd.idaho.gov/alerts/ — ITD alerts page; no public statewide low-clearance bridge inventory — check Idaho 511 for active restrictions.
• Weight/licensing laws: https://itd.idaho.gov/dmv/driverservices/ — Idaho DMV driver services page covering CDL classes and towing thresholds.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Idaho.
• Real-time conditions: https://511.idaho.gov/ — Idaho 511, official ITD traveler info system.
• State parks/camping: https://parksandrecreation.idaho.gov/reservations/ — Idaho Parks & Recreation reservation portal (IDAHO TIME system).

Illinois

• Low bridges: https://idot.illinois.gov/travel-information/safety/oversize-overweight-permits.html — IDOT oversize/overweight permits page; no public low-bridge inventory published.
• Weight/licensing laws: https://www.ilsos.gov/departments/drivers/drivers_license/cdl.html — Illinois Secretary of State CDL information page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Illinois.
• Real-time conditions: https://www.gettingaroundillinois.com/ — Getting Around Illinois, IDOT's official traveler info portal with road conditions, construction, and trucking routes.
• State parks/camping: https://dnr.illinois.gov/parks/camp.html — Illinois DNR camping page (reservations via ExploreMoreIL).

Indiana

• Low bridges: https://www.in.gov/indot/permits/oversizeoverweight-vehicle-permitting/ — INDOT oversize permits page; no public statewide bridge clearance inventory.
• Weight/licensing laws: https://www.in.gov/bmv/licenses-permits-ids/commercial-drivers-license-and-permit/ — Indiana BMV commercial driver license page covering CDL thresholds.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://511in.org/ — INDOT Trafficwise (511IN), official Indiana traveler info portal.
• State parks/camping: https://www.in.gov/dnr/state-parks/reservations — Indiana DNR State Parks reservations (booking at camp.in.gov).

Iowa

• Low bridges: https://iowadot.gov/mvd/motorcarriers — Iowa DOT motor carrier services; no public low-bridge inventory — see Iowa 511 for active restrictions.
• Weight/licensing laws: https://iowadot.gov/mvd/driverslicense/commercial-driver-license — Iowa DOT CDL info page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.511ia.org/ — Iowa 511, Iowa DOT's official traveler info portal.
• State parks/camping: https://www.iowadnr.gov/places-go/state-parks/make-reservation — Iowa DNR state parks reservation page (booking via ReserveAmerica).

Kansas

• Low bridges: https://www.ksdot.gov/bureaus/burTrafficSaf/oversize.asp — KDOT oversize/overweight permits; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.ksrevenue.gov/dovcdl.html — Kansas Department of Revenue CDL page covering license classes and weight thresholds.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.kandrive.gov/ — KanDrive, KDOT's official traveler info portal.
• State parks/camping: https://ksoutdoors.com/State-Parks/Reservations — Kansas Department of Wildlife, Parks & Tourism state park reservations (booking at campitks.com).

Kentucky

• Low bridges: https://transportation.ky.gov/Maps/Pages/All-Maps.aspx — KYTC maps page; no public low-bridge inventory — check GoKY for active restrictions.
• Weight/licensing laws: https://drive.ky.gov/driver-licensing/Pages/Commercial-Drivers.aspx — Kentucky Transportation Cabinet commercial drivers page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Kentucky.
• Real-time conditions: https://goky.ky.gov/ — GoKY, KYTC's official traveler info portal.
• State parks/camping: https://parks.ky.gov/things-to-do/lodging/reserve-a-campground — Kentucky State Parks campground reservation page.

Louisiana

• Low bridges: http://wwwsp.dotd.la.gov/Inside_LaDOTD/Divisions/Multimodal/Truck_Permits/ — LADOTD truck permits page; no public statewide bridge clearance inventory.
• Weight/licensing laws: https://omv.la.gov/commercial-driving-license-cdl/ — Louisiana Office of Motor Vehicles CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Louisiana.
• Real-time conditions: https://www.511la.org/ — 511LA, LADOTD's official traveler info system.
• State parks/camping: https://www.lastateparks.com/reservation-information — Louisiana State Parks reservation info (operated by LA Office of State Parks).

Maine

• Low bridges: https://www.maine.gov/mdot/csd/mfa/ — MaineDOT motor freight admin page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.maine.gov/sos/bmv/licenses/cdl.html — Maine Secretary of State BMV commercial driver page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Maine.
• Real-time conditions: https://newengland511.org/region/Maine — New England 511 (Maine section), MaineDOT's official traveler info.
• State parks/camping: https://www.maine.gov/dacf/parks/camping/reservations/ — Maine Bureau of Parks & Lands camping reservations (Dept. of Agriculture, Conservation & Forestry).

Maryland

• Low bridges: https://roads.maryland.gov/mdotsha/pages/index.aspx?pageid=141 — MDOT SHA bridge info; statewide bridge inventory accessible via MDOT for permits; no consumer low-bridge directory.
• Weight/licensing laws: https://mva.maryland.gov/drivers/Pages/commercial-driver-license.aspx — Maryland MVA CDL page.
• Propane/tunnel restrictions: https://mdta.maryland.gov/TunnelRestrictionsAndVehiclePermits — Maryland Transportation Authority tunnel restrictions page. Propane >10 lb prohibited in Fort McHenry (I-95) and Baltimore Harbor (I-895) Tunnels; reroute via I-695 western section. Quasi-governmental agency.
• Real-time conditions: https://md511.maryland.gov/ — MD 511, MDOT's official traveler info system.
• State parks/camping: https://dnr.maryland.gov/publiclands/pages/campinginfo.aspx — Maryland DNR camping info (booking at parkreservations.maryland.gov).

Massachusetts

• Low bridges: https://www.mass.gov/info-details/hazardous-material-route-designation — MassDOT hazmat route designation includes downtown Boston routing; no public low-clearance bridge inventory published.
• Weight/licensing laws: https://www.mass.gov/commercial-drivers-license-cdl — Mass.gov RMV commercial driver license page.
• Propane/tunnel restrictions: https://www.mass.gov/info-details/tunnel-emergency-awareness — MassDOT tunnel awareness page. ALL hazardous cargo and cargo tankers (including propane) prohibited from Boston tunnels (I-93/I-90 downtown); alternate routing required.
• Real-time conditions: https://www.mass511.com/ — Massachusetts 511, MassDOT's official traveler info system.
• State parks/camping: https://www.mass.gov/camping-at-massachusetts-state-parks — Mass DCR camping page (booking via ReserveAmerica).

Michigan

• Low bridges: https://www.michigan.gov/mdot/travel/safety/trucking — MDOT trucking info; oversize/overweight permits handle clearance — no public consumer low-bridge inventory.
• Weight/licensing laws: https://www.michigan.gov/sos/license-id/commercial-driver-license — Michigan Secretary of State CDL page.
• Propane/tunnel restrictions: N/A — Detroit-Windsor Tunnel is binational (consult tunnel authority directly); no state-level Michigan tunnel propane restrictions broadly applicable to RVs.
• Real-time conditions: https://mdotjboss.state.mi.us/MiDrive/map — MDOT Mi Drive, official Michigan real-time traveler info map.
• State parks/camping: https://www.michigan.gov/dnr/things-to-do/camping-and-lodging — Michigan DNR camping page (booking at MiDNRReservations.com).

Minnesota

• Low bridges: https://www.dot.state.mn.us/cvo/oversize-overweight-permits.html — MnDOT commercial vehicle ops oversize permits; no public statewide low-bridge inventory.
• Weight/licensing laws: https://dps.mn.gov/divisions/dvs/forms-documents/Documents/CDLManual.pdf — Minnesota DVS CDL manual (PDF) covering weight classes and towing rules.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Minnesota.
• Real-time conditions: https://511mn.org/ — Minnesota 511, MnDOT's official traveler info system.
• State parks/camping: https://www.dnr.state.mn.us/camping/index.html — Minnesota DNR camping page (reservations at mndnr.gov/reservations).

Mississippi

• Low bridges: https://mdot.ms.gov/portal/permits — MDOT permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.driverservicebureau.dps.ms.gov/CDL — Mississippi Department of Public Safety Driver Service Bureau CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.mdottraffic.com/ — MDOTtraffic, Mississippi DOT's official 511 traveler info system.
• State parks/camping: https://reserve.mdwfp.com/ — Mississippi Department of Wildlife, Fisheries & Parks state park reservation portal.

Missouri

• Low bridges: https://www.modot.org/oversizeoverweight-permits — MoDOT oversize permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://dor.mo.gov/driver-license/commercial-driver-license/ — Missouri Department of Revenue CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://traveler.modot.org/map/ — MoDOT Traveler Information Map, official 511 portal.
• State parks/camping: https://mostateparks.com/activity/camping/reservation-system — Missouri State Parks camping reservations (icampmo.com).

Montana

• Low bridges: https://www.mdt.mt.gov/travinfo/ — MDT traveler info portal includes active restrictions; no separate public statewide low-bridge inventory.
• Weight/licensing laws: https://dojmt.gov/driving/commercial-driver-license/ — Montana Department of Justice Motor Vehicle Division CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.mdt511.com/ — Montana 511 (MDT511), official MDT traveler info system.
• State parks/camping: https://stateparks.mt.gov/ — Montana State Parks (Montana Fish, Wildlife & Parks) — reservations via ReserveAmerica.

Nebraska

• Low bridges: https://dot.nebraska.gov/business-center/permits/ — NDOT permits center; no public statewide low-bridge inventory.
• Weight/licensing laws: https://dmv.nebraska.gov/dl/cdl — Nebraska DMV CDL page covering weight thresholds and license classes.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.511.nebraska.gov/ — Nebraska 511, NDOT's official traveler info system.
• State parks/camping: https://outdoornebraska.gov/parks/reservations/ — Nebraska Game & Parks Commission state park reservations.

Nevada

• Low bridges: https://www.dot.nv.gov/mobility/trucking — NDOT trucking page covering oversize permits; no public statewide low-bridge inventory.
• Weight/licensing laws: https://dmv.nv.gov/cdl.htm — Nevada DMV commercial driver license page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.nvroads.com/ — Nevada 511 (nvroads.com), NDOT's official traveler info system.
• State parks/camping: https://parks.nv.gov/about/reservations — Nevada State Parks reservations (ReserveNevada.com).

New Hampshire

• Low bridges: https://www.dot.nh.gov/doing-business-nhdot/general-public/real-time-travel-info — NHDOT travel info page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.dmv.nh.gov/licensing-driver-education-and-safety/commercial-driver-license-cdl — NH DMV CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in NH.
• Real-time conditions: https://newengland511.org/region/New%20Hampshire — New England 511 (NH section), NHDOT's official traveler info.
• State parks/camping: https://www.nhstateparks.org/fees-reservations/camping-rates-reservations — NH State Parks camping reservations (NH Division of Parks & Recreation).

New Jersey

• Low bridges: https://dot.nj.gov/transportation/commuter/restrictions/ — NJDOT restrictions page; commercial vehicle restrictions listed. Statewide consumer low-bridge inventory not published.
• Weight/licensing laws: https://www.nj.gov/mvc/license/cdl.htm — New Jersey MVC commercial driver license page.
• Propane/tunnel restrictions: https://www.panynj.gov/bridges-tunnels/en/restrictions.html — Port Authority of NY/NJ tunnel & bridge restrictions. Propane prohibited in Lincoln Tunnel, Holland Tunnel, and lower level of George Washington Bridge. Quasi-governmental bi-state agency.
• Real-time conditions: https://511nj.org/ — NJ 511, NJDOT's official traveler info system.
• State parks/camping: https://www.nj.gov/dep/parksandforests/parks/campreserv.html — NJDEP state parks camping reservation info (booking at camping.nj.gov).

New Mexico

• Low bridges: https://www.dot.nm.gov/oversize-overweight-permits-cvep/ — NMDOT oversize/overweight permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.mvd.newmexico.gov/drivers/commercial-drivers-license/ — New Mexico Motor Vehicle Division CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://nmroads.com/ — NMRoads, NMDOT's official road advisory system (511).
• State parks/camping: https://www.emnrd.nm.gov/spd/activities/camping/ — New Mexico State Parks Division (EMNRD) camping page; reservations via ReserveAmerica.

New York

• Low bridges: https://www.dot.ny.gov/divisions/operating/oom/transportation-systems/repository/12NYCRR-Designated-Truck-Routes-and-Hazmat-Routes.pdf — NYSDOT designated truck/hazmat routes (PDF); 511NY shows real-time restrictions but no comprehensive public bridge clearance inventory consumer-facing.
• Weight/licensing laws: https://dmv.ny.gov/commercial-drivers/get-commercial-drivers-license-cdl — New York DMV CDL page.
• Propane/tunnel restrictions: https://www.panynj.gov/bridges-tunnels/en/restrictions.html — Port Authority of NY/NJ restrictions (Lincoln/Holland Tunnels, GWB lower level). Also: MTA Bridges & Tunnels has restrictions for Brooklyn-Battery/Queens-Midtown Tunnels — see https://new.mta.info/bridges-tunnels.
• Real-time conditions: https://511ny.org/ — 511NY, NYSDOT's official traveler info system.
• State parks/camping: https://parks.ny.gov/camping — NYS Office of Parks, Recreation & Historic Preservation camping page (reservations via ReserveAmerica).

North Carolina

• Low bridges: https://connect.ncdot.gov/business/trucking/Pages/default.aspx — NCDOT trucking & permits page; vertical clearance map products available for permit holders, not as consumer inventory.
• Weight/licensing laws: https://www.ncdot.gov/dmv/license-id/commercial/Pages/default.aspx — North Carolina DMV commercial license page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in NC.
• Real-time conditions: https://drivenc.gov/ — DriveNC.gov, NCDOT's official traveler info portal.
• State parks/camping: https://www.ncparks.gov/recreation/camping/reserving-campsites — NC State Parks reservations (booking via ReserveAmerica).

North Dakota

• Low bridges: https://www.dot.nd.gov/divisions/mhp/permits.htm — NDDOT permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.dot.nd.gov/divisions/driverslicense/cdl.htm — NDDOT Driver License Division CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://travel.dot.nd.gov/ — ND Roads, NDDOT's official 511 traveler info portal.
• State parks/camping: https://www.parkrec.nd.gov/stay/camping — North Dakota Parks & Recreation camping page (reservendparks.com).

Ohio

• Low bridges: https://www.transportation.ohio.gov/working/permits/permits — ODOT permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://bmv.ohio.gov/driver-license-cdl.aspx — Ohio BMV CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Ohio.
• Real-time conditions: https://ohgo.com/ — OHGO, ODOT's official 511 traveler info portal.
• State parks/camping: https://ohiodnr.gov/go-and-do/plan-a-visit/campgrounds — Ohio DNR campgrounds page (reservations at reserveohio.com).

Oklahoma

• Low bridges: https://oklahoma.gov/odot/business-center/permits.html — ODOT permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://oklahoma.gov/service-oklahoma/driver-services/commercial-drivers-license.html — Service Oklahoma CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://oktraffic.org/ — OKTraffic, ODOT's official traveler info system.
• State parks/camping: https://www.travelok.com/state-parks/reservation-guidelines — Oklahoma State Parks reservation guidelines (operated by Oklahoma Tourism & Recreation Dept.).

Oregon

• Low bridges: https://www.oregon.gov/odot/MCT/Pages/index.aspx — ODOT Motor Carrier Transportation Division; oversize permits handle clearance — no consumer-facing statewide low-bridge inventory.
• Weight/licensing laws: https://www.oregon.gov/odot/dmv/pages/driverid/cdl.aspx — Oregon DMV CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.tripcheck.com/ — TripCheck, ODOT's official 511 traveler info portal.
• State parks/camping: https://stateparks.oregon.gov/index.cfm?do=reserve.make — Oregon State Parks reservation portal (oregonstateparks.reserveamerica.com).

Pennsylvania

• Low bridges: https://www.penndot.pa.gov/TravelInPA/Pages/Low-Clearance-Bridges.aspx — PennDOT publishes a low-clearance bridge list (one of the few states with a public inventory). Verify URL on PennDOT site if it shifts.
• Weight/licensing laws: https://www.dmv.pa.gov/Driver-Services/Driver-Licensing/Pages/Commercial-Drivers-License.aspx — PennDOT DMV CDL page.
• Propane/tunnel restrictions: https://www.paturnpike.com/commercial/permits-restrictions/hazardous-materials-(placarded-loads) — PA Turnpike hazmat & propane restrictions page. Specific limits apply through 5 PA Turnpike tunnels. Quasi-governmental.
• Real-time conditions: https://www.511pa.com/ — 511PA, PennDOT's official traveler info system.
• State parks/camping: https://www.pa.gov/agencies/dcnr/recreation/what-to-do/stay-overnight — PA DCNR overnight stay info (state parks & forests).

Rhode Island

• Low bridges: https://www.dot.ri.gov/travel/ — RIDOT travel page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://dmv.ri.gov/licenses-permits-ids/cdl/ — Rhode Island DMV CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Rhode Island.
• Real-time conditions: https://www.dot.ri.gov/travel/ — RIDOT traveler info page (cameras, advisories, 511 services).
• State parks/camping: https://riparks.ri.gov/campgrounds — Rhode Island State Parks camping (RI DEM Division of Parks & Recreation).

South Carolina

• Low bridges: https://www.scdot.org/travel/travel-permits.aspx — SCDOT permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.scdmvonline.com/Driver-Services/Drivers-License/CDL — South Carolina DMV CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://www.511sc.org/ — 511SC, SCDOT's official traveler info system.
• State parks/camping: https://southcarolinaparks.com/camping-and-lodging — South Carolina State Parks camping (operated by SC Department of Parks, Recreation & Tourism).

South Dakota

• Low bridges: https://dot.sd.gov/business/permits — SDDOT permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://dps.sd.gov/driver-licensing/commercial-driver-license — South Dakota Department of Public Safety CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://sd511.org/ — SD 511, SDDOT's official traveler info system.
• State parks/camping: https://gfp.sd.gov/camp/ — SD Game, Fish & Parks camping page (reservations.gooutdoorssouthdakota.com).

Tennessee

• Low bridges: https://www.tn.gov/tdot/oversize-overweight-permits.html — TDOT oversize permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.tn.gov/safety/driver-services/cdl.html — Tennessee Department of Safety & Homeland Security CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known.
• Real-time conditions: https://smartway.tn.gov/traffic — TDOT SmartWay (TN 511), official traveler info system.
• State parks/camping: https://reserve.tnstateparks.com/ — Tennessee State Parks reservations (operated by TN Dept. of Environment & Conservation).

Texas

• Low bridges: https://www.txdot.gov/business/resources/motor-carrier-resources/oversize-overweight.html — TxDOT motor carrier/oversize page; no consumer-facing public low-bridge inventory.
• Weight/licensing laws: https://www.dps.texas.gov/section/driver-license/commercial-drivers-license — Texas DPS commercial driver license page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions in Texas.
• Real-time conditions: https://drivetexas.org/ — DriveTexas, TxDOT's official traveler info system.
• State parks/camping: https://tpwd.texas.gov/state-parks/park-reservation-information/reservations — Texas Parks & Wildlife state parks reservation page.

Utah

• Low bridges: https://www.udot.utah.gov/connect/business/permits-licensing/ — UDOT permits & licensing; no public statewide low-bridge inventory consumer-facing.
• Weight/licensing laws: https://dld.utah.gov/cdl/ — Utah Driver License Division CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Utah.
• Real-time conditions: https://udottraffic.utah.gov/ — UDOT Traffic, Utah's official 511 traveler info system.
• State parks/camping: https://stateparks.utah.gov/ — Utah State Parks (Utah Division of Outdoor Recreation); reservations via reserveamerica.com.

Vermont

• Low bridges: https://vtrans.vermont.gov/permits — VTrans permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://dmv.vermont.gov/licenses/commercial — Vermont DMV commercial license page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Vermont.
• Real-time conditions: https://newengland511.org/region/Vermont — New England 511 (VT section), VTrans' official traveler info.
• State parks/camping: https://www.vtstateparks.com/reservations — Vermont State Parks reservation page (VT Department of Forests, Parks & Recreation).

Virginia

• Low bridges: https://www.vdot.virginia.gov/travel-traffic/freight/truck-restrictions/ — VDOT truck restrictions page covering height, weight, and route restrictions.
• Weight/licensing laws: https://www.dmv.virginia.gov/drivers/cdl/ — Virginia DMV CDL page.
• Propane/tunnel restrictions: https://www.vdot.virginia.gov/travel-traffic/freight/hazmat/ — VDOT hazardous materials page. RV/motorhome propane tanks must be inspected at certain tunnels (Hampton Roads BT, Monitor-Merrimac, Big Walker, East River, Downtown/Midtown Norfolk).
• Real-time conditions: https://511.vdot.virginia.gov/ — 511 Virginia, VDOT's official traveler info portal.
• State parks/camping: https://www.dcr.virginia.gov/state-parks/reservations — Virginia State Parks reservations (VA Dept. of Conservation & Recreation).

Washington

• Low bridges: https://wsdot.wa.gov/travel/commercial-vehicles/restrictions-routes — WSDOT commercial vehicle restrictions & routes page covers active height/weight restrictions.
• Weight/licensing laws: https://www.dol.wa.gov/business/cdl.html — Washington Department of Licensing CDL page.
• Propane/tunnel restrictions: https://wsdot.wa.gov/travel/highway-bridges/sr-99-alaskan-way-tunnel — WSDOT SR-99 (Alaskan Way) tunnel page; certain hazmat including LPG cargo prohibited — confirm specifics with WSDOT before transit.
• Real-time conditions: https://wsdot.wa.gov/travel — WSDOT travel page with real-time alerts, cameras, mountain pass conditions, and bridge/road restrictions.
• State parks/camping: https://parks.wa.gov/passes-permits/reservations — Washington State Parks reservation page (washington.goingtocamp.com).

West Virginia

• Low bridges: https://transportation.wv.gov/highways/programplanning/oversize/Pages/default.aspx — WVDOH oversize/overweight permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://transportation.wv.gov/DMV/DMVFormSearch/CDL.aspx — West Virginia DMV CDL page.
• Propane/tunnel restrictions: https://transportation.wv.gov/Turnpike/Pages/default.aspx — WV Turnpike (Memorial Tunnel area); no widely-publicized tunnel propane restrictions specific to RVs in WV — confirm with WVDOH for specific routes.
• Real-time conditions: https://www.wv511.org/ — WV 511, WVDOT's official traveler info system.
• State parks/camping: https://wvstateparks.com/things-to-do/camping/ — West Virginia State Parks camping page (operated by WV Division of Natural Resources).

Wisconsin

• Low bridges: https://wisconsindot.gov/Pages/dmv/com-drv-vehs/mtr-car-trkr/osowgeneral.aspx — WisDOT oversize/overweight permits page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://wisconsindot.gov/Pages/dmv/license-drvs/how-to-apply/cdl.aspx — Wisconsin DOT DMV CDL page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Wisconsin.
• Real-time conditions: https://511wi.gov/ — 511 Wisconsin, WisDOT's official traveler info system.
• State parks/camping: https://dnr.wisconsin.gov/topic/parks/camping — Wisconsin DNR state parks camping page.

Wyoming

• Low bridges: https://www.dot.state.wy.us/home/trucking_commercial_vehicles.html — WYDOT trucking page; no public statewide low-bridge inventory.
• Weight/licensing laws: https://www.dot.state.wy.us/home/driver_license_records/commercial-driver-licensing.html — WYDOT commercial driver licensing page.
• Propane/tunnel restrictions: N/A — no state-level tunnel propane restrictions known in Wyoming.
• Real-time conditions: https://www.wyoroad.info/ — WYDOT 511 (wyoroad.info), official Wyoming traveler info system.
• State parks/camping: https://wyoparks.wyo.gov/index.php/permits-reservations/reservations — Wyoming State Parks, Historic Sites & Trails reservation page.

Frequently Asked Questions

Where can I find the official low-clearance bridge list for my state?

Most US states do not publish a public consumer-facing low-clearance bridge inventory — Pennsylvania is the notable exception. Most states only release clearance information through their oversize/overweight permit process, which requires a load-specific application. For consumer trip planning, the practical fallback is each state's 511 active restriction map at trip time. The directory above links to your state's permit/restrictions page as the closest official starting point.

Which US tunnels restrict propane in an RV?

Confirmed restrictions cluster in: Maryland (MDTA Fort McHenry + Baltimore Harbor), New York/New Jersey (Port Authority — Lincoln Tunnel, Holland Tunnel, GWB lower level), Massachusetts (Boston downtown tunnels), Colorado (Eisenhower-Johnson Memorial Tunnel — escort required), Pennsylvania (5 PA Turnpike tunnels), Virginia (Hampton Roads BT and 5 others — inspection required), Washington (SR-99 Alaskan Way Tunnel). Other states generally have no state-level tunnel propane restrictions. Always verify the current rule with the operating tunnel authority before transit.

Why are the links only government sources?

Three reasons. First, government information is in the public domain or freely linkable — no copyright or licensing issues. Second, government sources are the authoritative ones; if a state DMV says weight limits are X, that is the rule. Third, third-party safety summaries can be wrong, out of date, or commercially biased. Linking only to official sources lets you verify everything yourself.

How often is this directory updated?

The directory was assembled in May 2026 and verified against each linked agency at that time. Government URLs occasionally shift when agencies restructure their sites. If you find a broken link, the state's main DOT or DMV homepage is the right place to navigate from. The fundamentals (which states restrict propane in tunnels, which DMVs handle CDL rules) change slowly; the URLs may need refreshing more often than the underlying information.

Do I need a CDL to drive my RV?

Depends on your state and your rig weight. Federally, a Commercial Driver's License (CDL) is required for vehicles over 26,001 lb GVWR or combinations over 26,001 lb with a trailer over 10,000 lb. States vary in how this applies to non-commercial RV use — California has a separate non-commercial Class A/B framework, while other states exempt private RV operators below a threshold. The state DMV link in each section above is the right place to check your specific situation.

What should I do if my route includes a tunnel I am unsure about?

Personally I do three things: (1) check the tunnel authority's website using the link in this directory, (2) call the authority's non-emergency line if the website is ambiguous, (3) plan an alternate route in advance even if I expect to take the tunnel — so I have a backup if signage on the day says otherwise. Tunnel propane rules can change; the only authoritative source on the day of travel is the operating authority.

Notes on Gaps

Three honest caveats:

1. Low-bridge inventories are systematically not publicly published in most states. Pennsylvania is the notable exception. Most states issue clearance information only through their oversize/overweight permit process, which requires a load-specific application. For consumer route planning, the practical fallback is the state's 511 active restriction map at trip time. This is an industry-wide data gap, not a research failure.
2. Tunnel propane restrictions cluster in the Northeast/Mid-Atlantic, Colorado, and Washington. States without major tunnel infrastructure are marked N/A. Confirmed restrictions documented for: MD (MDTA tunnels), NY/NJ (Port Authority + MTA Bridges & Tunnels), MA (Boston tunnels), CO (Eisenhower-Johnson), PA (PA Turnpike tunnels), VA (Hampton Roads BT and 5 others), CA (Caldecott), WA (SR-99).
3. State-operated .com and .org domains are the official agency presence for those state agencies (for example, alapark.com is the Alabama State Parks page, run by AL Department of Conservation & Natural Resources). These are state-operated, not third-party, and are included on that basis.

About This Directory

I built this for my own trip planning, then realized I would rather have it published than email myself the link list. WhimTrav, the RV navigation app I build, uses the underlying data (HERE Maps truck routing, state-level rules) inside the app itself — this page is the open, source-only version anyone can use, with or without WhimTrav.

If you find a broken link or know of a government source I missed, the email is in the WhimTrav footer below — I update this page when I can.

Verified: May 2026 — bughatti