What can I search by in the bridge lookup?

The route or road a bridge carries, the feature it crosses, and its recorded location text.

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Bridge lookup

Q: What does the load rating mean?

It is the NBI inventory load rating in metric tons, the load level a bridge is rated to carry for an indefinite period. A lower number means a more load-restricted structure.

Type a route number, the waterway or road a bridge crosses, or a place name. Results link straight to the full NBI record.

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026

How does the bridge lookup work?

What can I search by?

The tool matches the route or road a bridge carries, the feature it crosses (a river, railway, or road), and its recorded location text.

What does the load rating mean?

It is the NBI inventory load rating in metric tons — the load level a bridge is rated to carry for an indefinite period. A lower number means the structure is more load-restricted. How ratings work →

Can't find a specific bridge?

Some structures have sparse text fields in the NBI. Try browsing by state and then county to reach it from the inventory tree.

Explore more

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Publisher	Kiznis Studio
Sources	FHWA National Bridge Inventory, public U.S. government datasets