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.

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BridgeLocationConditionYear BuiltLengthADT
SR 524 SPUR/44TH AVE W Washington Fair 1963 74.7 m 84,075
SPRINGBROOK/OAKESDALE Washington Good 2009 125.6 m 83,533
N-W RAMP Washington Good 1965 75.9 m 83,247
N-W RAMP Washington Fair 1966 63.1 m 83,247
NE 175TH ST Washington Good 1964 49.7 m 82,639
NE 175TH ST Washington Good 1964 49.7 m 82,639
NE 85TH ST Washington Good 1971 68.0 m 80,423
NE 85TH ST Washington Good 1971 66.8 m 80,423
ABANDONED RR Washington Fair 1967 82.6 m 78,048
ABANDONED RR Washington Good 1967 79.2 m 78,048
I-405 & RAMPS Washington Good 1964 83.5 m 77,502
SR 104 / NE 205TH ST Washington Good 1963 57.3 m 77,329
SR 104 / NE 205TH ST Washington Good 1963 61.0 m 77,329
RR & CITY STREETS Washington Fair 1965 233.2 m 77,251
SR 181 Washington Fair 1964 52.7 m 77,251
GREEN RIVER Washington Fair 1964 74.7 m 77,251
FALLOUT SHELTER Washington Good 1963 17.4 m 76,058
MAY CREEK Washington Good 1958 51.5 m 74,980
MAY CREEK Washington Good 2023 50.6 m 74,980
MERCER SLOUGH Washington Poor 1940 857.1 m 74,410
MERCER SL Washington Poor 1970 813.5 m 74,410
I-705 SR 7 RAMPS RR Washington Good 2016 218.8 m 74,394
I-705 SR 7 RAMPS RR Washington Fair 1964 249.0 m 74,394
I-705 SR 7 RAMPS RR Washington Fair 1964 249.0 m 74,394
I-405 Washington Good 2023 36.4 m 73,753
COAL CREEK PARKWAY SE Washington Fair 1965 68.3 m 71,797
COAL CREEK PARKWAY SE Washington Fair 1965 60.0 m 71,797
UNION AVE Washington Good 1972 70.4 m 71,543
CEDAR ST Washington Good 1972 60.7 m 71,543
UNION AVE Washington Good 1972 70.4 m 71,543
CEDAR ST Washington Fair 1972 60.7 m 71,543
SB VIADUCT STA 2195 Washington Fair 1964 246.0 m 71,171
DEARBORN ST Washington Fair 1965 66.8 m 71,171
KING-JACKSON ST Washington Fair 1965 217.0 m 71,171
DEARBORN ST Washington Good 1965 66.8 m 71,171
KING-JACKSON ST Washington Fair 1965 215.2 m 71,171
NE 44TH ST Washington Good 2023 40.7 m 70,736
SR 18 Washington Fair 1959 64.9 m 70,133
SR 18 Washington Fair 1959 62.8 m 70,133
RICHARDS RD Washington Good 1968 65.2 m 69,741
RICHARDS RD Washington Fair 1940 61.0 m 69,741
OWR N RR Washington Fair 1957 19.2 m 69,477
HENDERSON BLVD Washington Good 1957 26.5 m 69,477
S 405 & N 525 RAMPS Washington Fair 1980 83.8 m 69,203
NE 132ND ST Washington Fair 1970 54.9 m 69,115
NE 132ND ST Washington Fair 1970 51.2 m 69,115
I-405 Washington Good 2024 32.2 m 68,675
LAKE WASHINGTON Washington Fair 1989 417.3 m 68,544
LAKE WASHINGTON Washington Poor 1989 1,748.6 m 68,544
LAKE WASHINGTON Washington Fair 1989 448.7 m 68,544

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.