To check whether a bridge is open, use the state or regional 511 service responsible for that road, then verify any vehicle-specific limits on the state transportation department’s bridge-restriction page. In the United States, the Federal Highway Administration’s National Traffic and Road Closure Information directory helps you find the right state service. A route planner or an empty closure map is not proof that a crossing is open.
How to check whether a bridge is open right now
- Identify the crossing. Note the bridge name, state, road or route number, nearby town, and direction of travel. If you are planning a longer trip, list the major bridges that could affect your route.
- Find the responsible traffic service. Use the FHWA state-by-state traffic and road-closure directory to reach the relevant state or regional 511 service. The FHWA page is a directory, not a single federal feed that confirms the live status of every bridge.
- Search the 511 map or zoom to the crossing. Turn on available closure, incident, and construction layers. Select any alert or map symbol near the bridge and read its details, including the location, direction, timing, and whether the notice describes a full closure, partial closure, or restriction. The specific layers and features depend on the service.
- Check the notice’s time and scope. Confirm that it applies to the bridge and direction you intend to use, and note whether it is current, scheduled, or cleared. If details are missing or ambiguous, look for an agency alert or contact channel rather than assuming the bridge is passable.
- Verify close to departure. Refresh the official service before leaving and again before committing to a major diversion. If the crossing is critical or information conflicts, use the responsible agency’s published phone or contact channel. In the Bay Area, 511 can provide traffic conditions for a named bridge by phone; its FAQ explains the service.
Where to look, and what each source can tell you
| Source | Best use | What it cannot establish on its own |
|---|---|---|
| FHWA national directory | Finding the relevant state traveler-information service. | It is a directory, not a live confirmation for a particular crossing. |
| State or regional 511 map or app | Checking available incident, closure, construction, alert, camera, and route information. Features vary by jurisdiction. | Coverage, update behavior, and map layers differ; a proposed route or blank layer is not a guarantee that a bridge is open. |
| State DOT bridge restriction or clearance page | Checking vehicle-specific limits, such as posted restrictions or clearance by travel lane and direction. | It may not be the live incident feed and may cover only certain roads. |
| Official phone line or agency alert | Getting information when a map is inaccessible, a notice is unclear, or reports conflict. | Names and availability vary by location. Check the responsible agency’s service details. |
| Crowdsourced traffic reports | Adding awareness of reported incidents or developing hazards. | They are not a substitute for the official agency’s closure or restriction information. |
For example, the Bay Area 511 FAQ describes map categories for incidents, road closures, construction, events, and camera snapshots. Alaska 511 displays Waze reports in addition to information reported by Alaska DOT. Compare sources by how recently an alert was updated, whether it distinguishes closure from restriction, whether it covers the exact road and direction, and whether you can verify it through another agency channel.
How to check bridge restrictions for trucks or tall vehicles
“Open” does not necessarily mean suitable for every vehicle. If you are driving a truck, an over-height vehicle, or a vehicle that may exceed a posted weight limit, check the transportation department’s bridge restriction or clearance information separately from the incident map. Confirm the limit for your direction of travel and the road you plan to use.
Indiana DOT’s Restrictions/Closings page directs travelers to current restrictions and closures for the latest bridge restrictions. Its bridge clearance map provides minimum clearance by travel lane and direction, but covers interstates, U.S. highways, and state routes. For city or county roads in the route-planning context described by INDOT, separate municipal approval is needed. Check the relevant local authority when your route leaves the roads covered by a state map.
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What a map, camera, or route planner does not prove
A suggested route is not confirmation that every bridge is open
Routing tools can omit closures. Wisconsin 511 states: “Routing may not include all road construction, traffic incident or weather event closures.” Use routing as a planning aid, then inspect official notices for the crossings on your route.
A camera is only a visual snapshot
A camera may show visible traffic or conditions, but it does not establish that the bridge is officially open, and a feed may be unavailable. The 511 SF Bay FAQ says live camera photo streams are provided by other agencies and that camera-feed quality, availability, and reliability are outside MTC’s control.
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A bridge marker may describe restrictions, not a live closure
Bridge clearance information can describe geometry or vehicle limits rather than an emergency closure. Check the responsible agency’s current closure and restriction notices as well as any bridge-specific map.
Crowdsourced reports are supplementary
User-submitted or crowdsourced reports can add context, but may not match agency-confirmed status. Alaska 511 identifies Waze incident and closure data as additional to official information reported by Alaska DOT. When reports disagree, prioritize current official agency information and seek confirmation if the decision is consequential.
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When you cannot confirm the crossing
- Do not treat a blank map, an unmarked bridge, or a navigation app’s route as a definitive all-clear.
- Check the official service’s alert details and the relevant DOT restriction page, especially if your vehicle has height or weight limits.
- Use an official phone or contact channel if the map is unavailable or the notice does not clearly cover your crossing and direction.
- If you are already driving, stop somewhere safe before using a phone or changing your route.
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