Browse Bridge Database
8,520 bridges in the FHWA National Bridge Inventory in Washington.
National Bridge Inventory Database
Browse 8,520 bridges from the Federal Highway Administration National Bridge Inventory. Filter by state, condition rating, or search by name and location.
| Bridge | Location | Condition | Year Built | Length | ADT |
|---|---|---|---|---|---|
| BNSF RAILWAY | Washington | Good | 2010 | 88.2 m | 30,397 |
| ARGENT ROAD | Washington | Fair | 1984 | 44.5 m | 30,320 |
| ARGENT ROAD | Washington | Good | 1984 | 39.6 m | 30,320 |
| EVANS CREEK | Washington | Good | 2007 | 21.3 m | 30,193 |
| E.FK.ISSAQUAH CK. | Washington | Fair | 1970 | 12.5 m | 30,000 |
| I-5 | Washington | Fair | 1964 | 85.3 m | 30,000 |
| SAMMAMISH RIVER | Washington | Fair | 1992 | 35.1 m | 30,000 |
| SR 512 | Washington | Fair | 1971 | 86.6 m | 29,975 |
| PARKER HORN | Washington | Fair | 1958 | 45.1 m | 29,630 |
| I-405 | Washington | Fair | 2003 | 68.3 m | 29,600 |
| N 4TH AVE | Washington | Fair | 1964 | 49.7 m | 29,585 |
| N 4TH AVE | Washington | Good | 1968 | 53.9 m | 29,585 |
| WEST CAMAS SLOUGH | Washington | Fair | 1964 | 316.4 m | 29,477 |
| ERLAND POINT RD | Washington | Good | 1966 | 49.0 m | 29,466 |
| ERLAND POINT RD | Washington | Fair | 1966 | 48.9 m | 29,466 |
| I-5 | Washington | Fair | 1958 | 63.4 m | 29,346 |
| SHIP CANAL | Washington | Fair | 1917 | 96.6 m | 29,300 |
| SWAMP CREEK | Washington | Fair | 1960 | 6.9 m | 29,286 |
| NEWAUKUM RIVER | Washington | Fair | 1952 | 86.6 m | 29,186 |
| NEWAUKUM RIVER | Washington | Fair | 1952 | 86.6 m | 29,186 |
| WHITWORTH DRIVE | Washington | Fair | 1985 | 44.8 m | 29,166 |
| I-5 RAMPS | Washington | Poor | 1961 | 97.8 m | 29,145 |
| I-5 | Washington | Good | 2001 | 98.8 m | 29,024 |
| 2ND ST | Washington | Fair | 1963 | 64.0 m | 29,011 |
| SNOHOMISH R OVERFLOW | Washington | Fair | 1960 | 113.1 m | 29,011 |
| SNOHOMISH RIVER | Washington | Fair | 1959 | 338.6 m | 29,011 |
| OSTRANDER CREEK | Washington | Fair | 1965 | 6.4 m | 28,965 |
| LAKE WASHINGTON | Washington | Good | 2016 | 249.9 m | 28,957 |
| LAKE WASHINGTON | Washington | Fair | 2016 | 2,327.1 m | 28,957 |
| LAKE WASHINGTON | Washington | Good | 2016 | 249.3 m | 28,957 |
| COWEEMAN RIVER | Washington | Fair | 1979 | 92.7 m | 28,940 |
| COWEEMAN RIVER | Washington | Fair | 1979 | 141.4 m | 28,940 |
| COWEEMAN RIVER | Washington | Fair | 1979 | 150.9 m | 28,940 |
| COWEEMAN RIVER | Washington | Fair | 1980 | 150.6 m | 28,940 |
| COWEEMAN RIVER | Washington | Fair | 1979 | 80.8 m | 28,940 |
| COWEEMAN RIVER | Washington | Fair | 1979 | 149.7 m | 28,940 |
| CITY STREETS & RAILROAD | Washington | Good | 2011 | 293.8 m | 28,886 |
| SR 519 (ATLANTIC ST)/RR | Washington | Good | 2011 | 206.3 m | 28,886 |
| TERRAIN | Washington | Good | 2011 | 289.9 m | 28,886 |
| I-5 | Washington | Fair | 1960 | 73.5 m | 28,856 |
| QUARRY RD | Washington | Fair | 1957 | 8.5 m | 28,694 |
| STADIUM BNSFRR 4TH AVE | Washington | Fair | 2002 | 251.2 m | 28,680 |
| DEXTER WAY N | Washington | Fair | 1930 | 10.7 m | 28,629 |
| CLOVER CREEK | Washington | Good | 1993 | 11.9 m | 28,600 |
| SIRR (UPRR) | Washington | Fair | 1971 | 238.8 m | 28,557 |
| 18TH STREET | Washington | Fair | 1979 | 12.5 m | 28,500 |
| BNSF RR | Washington | Poor | 1934 | 64.3 m | 28,316 |
| JOE LEARY SLOUGH | Washington | Fair | 1964 | 20.7 m | 28,272 |
| DRAINAGE DITCH | Washington | Fair | 1963 | 20.7 m | 28,272 |
| I-5 | Washington | Fair | 1966 | 546.5 m | 28,260 |
Frequently Asked Questions
The National Bridge Inventory (NBI) is a federal database maintained by the Federal Highway Administration containing inspection data for all bridges on public roads in the U.S. with a span of more than 20 feet. Bridge owners must inspect each structure at least every 24 months.
ADT stands for Average Daily Traffic — the average number of vehicles crossing the bridge per day. Bridges are sorted by ADT by default because high-traffic bridges in poor condition pose the greatest risk to the most people.
Yes. Use the search field above to find bridges by name, location, or features crossed. You can also combine the search with state and condition filters to narrow your results.