Total Bridges
8,808
Public highway bridges in Washington
State profile · Below national median SD
Washington bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Washington — drawn straight from the FHWA National Bridge Inventory.
- 8,808
- Public bridges
- 42.4%
- Good condition
- 4.8%
- Poor condition
- 4.8%
- Structurally deficient
Good Condition
42.4%
3,734 bridges rated 7-9
-7.6pp vs 50% benchmark
Poor Condition
4.8%
424 bridges rated 0-4
Structurally Deficient
4.8%
424 bridges flagged for repair priority
-2.2pp vs national avg 7.0%
Washington vs national bridge condition
Washington — Good condition share 42.4%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Washington — Structurally deficient share 16.0%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Washington (FHWA NBI)
Counties (39)
Adams 190 Asotin 29 Benton 173 Chelan 154 Clallam 152 Clark 228 Columbia 86 Cowlitz 167 Douglas 40 Ferry 54 Franklin 138 Garfield 54 Grant 314 Grays Harbor 365 Island 8 Jefferson 100 King 1364 Kitsap 119 Kittitas 311 Klickitat 91 Lewis 422 Lincoln 181 Mason 139 Okanogan 163 Pacific 120 Pend Oreille 72 Pierce 502 San Juan 13 Skagit 256 Skamania 120 Snohomish 516 Spokane 360 Stevens 81 Thurston 216 Wahkiakum 36 Walla Walla 200 Whatcom 358 Whitman 351 Yakima 565
Washington vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Washington on the same metric.
06
California
4.60% top marginal rate
05
Arkansas
4.71% top marginal rate
53
Washington
4.81% top marginal rate
18
Indiana
4.94% top marginal rate
20
Kansas
5.25% top marginal rate
Bridges Needing Most Attention in Washington
Six lowest-condition bridges in Washington, ranked by composite NBI rating. Each is inspected at least every 24 months.
SILVER CK RD 00670
Structurally DeficientOver: NINE MILE CREEK
19.05 E SR 21, Ferry, WA
Built 1958 Load: 2.7 t ADT: 47
4TH ST
PoorOver: MILL CREEK
4TH AND MILL CR, Walla Walla, WA
Built 1908 Load: 2.7 t ADT: 2,624
NO DATA ENTERED
Structurally DeficientOver: WEST BRANCH LECLERC CREE
NO DATA ENTERED, Pend Oreille, WA
Built 1954 Load: 3.5 t ADT: 5
STEVENS RD. -IRRIG
PoorOver: DRAIN
00.26 NO CHAMBERS, Yakima, WA
Built 1965 Load: 3.6 t ADT: 68
PEARL HILL RD
PoorOver: JORDAN CREEK
1.44 E JCT HILAND ORCH RD, Douglas, WA
Built 1953 Load: 4.2 t ADT: 72
FARM ACCESS
PoorOver: ROZA ID WASTEWAY NO 3
NR PARKER HEIGHTS, WA, Yakima, WA
Built 1955 Load: 4.4 t ADT: 10
All Bridges in Washington
REGIONAL TRAIL
UnknownOver: I-90 S-E RAMP
JCT SR 900, King, WA
Built 2011 ADT: 12,101
RAILROAD
UnknownOver: SR 167
0.6 N JCT I-405, King, WA
Built 2007 ADT: 37,124
INTERURBAN TRAIL
UnknownOver: SR 524 SPUR/I-5 ON-RAMP
0.4 E JCT SR 524, King, WA
Built 2011 ADT: 26,181
PEDESTRIANS
UnknownOver: SR 513
0.4 N JCT SR 520, King, WA
Built 2013 ADT: 38,276
SOUND TRANSIT RAIL
UnknownOver: I-405, RAMPS
2.6 N JCT I-90, King, WA
Built 2023 ADT: 144,832
SOUND TRANSIT RAIL
UnknownOver: I-90 WB, RAMPS, STREET
6.4 E JCT I-5, King, WA
Built 2021 ADT: 68,450
PEDESTRIANS
UnknownOver: SR 520, RAMPS, RAILROAD
2.5 E JCT I-405, King, WA
Built 2021 ADT: 86,292
PEDESTRIANS
UnknownOver: SR 520, RAMPS
3.0 E JCT I-405, King, WA
Built 2021 ADT: 61,404
RAILROAD
UnknownOver: SR 520 RAMPS
2.1 E JCT I-405, King, WA
Built 2023 ADT: 46,948
RAILROAD
UnknownOver: W LK SAMMAMISH, RAMPS
4.7 E JCT I-405, King, WA
Built 2023 ADT: 36,948
PEDESTRIAN OX
UnknownOver: 1ST AVE S
1ST AVE S & SW 126, King, WA
Built 1959 ADT: 16,500
PEDESTRIAN WALKWAY
UnknownOver: 148TH AVENUE
148TH AV SE & SE 16TH ST, King, WA
Built 1975 ADT: 35,325
PEDESTRIAN
UnknownOver: RAINIER AVE, MLK JR WAY
Rainier Ave & MLK JR Way, King, WA
Built 1976 ADT: 35,000
PEDESTRIAN
UnknownOver: NE 45TH PL
NE 45th Pl & NE Blakeley, King, WA
Built 1900 ADT: 14,500
PEDESTRIAN
UnknownOver: DELRIDGE WAY
4500 Delridge Way SW, King, WA
Built 1960 ADT: 21,000
PEDESTRIAN
UnknownOver: FAUNTLEROY SW EXPRESSWAY
0.25 MI NORTH 35TH AVE SW, King, WA
Built 1961 ADT: 43,000
PEDESTRIAN
UnknownOver: NE PACIFIC ST
Pacific St WO Pacific Pl, King, WA
Built 1970 ADT: 50,400
PEDESTRIAN
UnknownOver: 15TH AVE NE
15th Ave NO Campus Pkwy, King, WA
Built 1971 ADT: 16,135
PEDESTRIAN
UnknownOver: LAKE WASHINGTON BLVD E
Lake WA Blvd E & Lynn St, King, WA
Built 1910 ADT: 16,000
PEDESTRIAN
UnknownOver: MERCER ST
Mercer St w/o 4th Ave N, King, WA
Built 1961 ADT: 10,000
PIKE PLACE MARKET
UnknownOver: WESTERN AVE
Stewart St Ped /Western, King, WA
Built 1930 ADT: 10,500
PEDESTRIAN
UnknownOver: VIRGINIA ST
Westin Hotel Skybridge, King, WA
Built 1982 ADT: 11,500
PEDESTRIAN
UnknownOver: POST AVE, WESTERN AVE
Marion St Ped /Western, King, WA
Built 1976 ADT: 9,000
PEDESTRIAN
UnknownOver: ALASKAN WAY
Marion St Ped /Alaskan, King, WA
Built 1908 ADT: 14,300
PEDESTRIAN
UnknownOver: 4TH & 5TH AVES
Btwn Jail And Admin blg, King, WA
Built 1984 ADT: 10,760
PEDESTRIAN
UnknownOver: HOLMAN ROAD NW
9200 Holman Rd NW, King, WA
Built 1964 ADT: 33,000
PEDESTRIAN
UnknownOver: MONTLAKE BLVD (SR 513)
0.6 N JCT SR 520, King, WA
Built 1938 ADT: 41,913
PEDESTRIAN
UnknownOver: WESTERN AVE
Pine St Ped /Western Ave, King, WA
Built 1989 ADT: 9,500
PEDESTRIAN
UnknownOver: AURORA AVE N (SR 99)
11.8 N JCT SR 509, King, WA
Built 1961 ADT: 29,610
PEDESTRIAN
UnknownOver: AURORA AVE N (SR 99)
13.2 N JCT SR 509, King, WA
Built 1966 ADT: 30,420
PEDESTRIAN
UnknownOver: AURORA AVE N (SR 99)
8.6 N JCT SR 509, King, WA
Built 1935 ADT: 39,438
PEDESTRIAN
UnknownOver: SAND POINT WAY NE
9400 Sand Point Way NE, King, WA
Built 1927 ADT: 12,600
PEDESTRIAN
UnknownOver: WESTLAKE AVE N
1505 Westlake Ave N, King, WA
Built 1995 ADT: 4,151
TOLT PIPELINE TR
UnknownOver: 155TH AVE NE
0.5 MI EAST OF SR-202, King, WA
Built 1999 ADT: 2,024
INTERURBAN TRAIL
UnknownOver: S 180TH STREET
0.2 MI E. JCT SR 181, King, WA
Built 2001 ADT: 10,500
PEDESTRIAN
UnknownOver: NE PACIFIC ST
Pacific St EO 15th Ave, King, WA
Built 1981 ADT: 28,000
PEDESTRIAN
UnknownOver: 6TH AVE
Pacific Place Skybridge, King, WA
Built 1998 ADT: 15,500
PEDESTRIAN
UnknownOver: ALASKAN WAY, RR
2209 Alaskan Way, King, WA
Built 1996 ADT: 15,300
PEDESTRIAN
UnknownOver: 3RD AVE
Macy's Skybridge, King, WA
Built 1960 ADT: 85,000
Pedestrian
UnknownOver: ELLIOTT AVE
Elliott Ave n/o Bay St, King, WA
Built 1996 ADT: 16,000
PEDESTRIAN
UnknownOver: FLORIDA ST, 16TH AVE, RR
16th Ave SW & SW Florida, King, WA
Built 2000 ADT: 2,500
RR
UnknownOver: SEAVIEW AVE NW
3500 Seaview Ave NW, King, WA
Built 1900 ADT: 4,971
RR TRACK
UnknownOver: W COMMODORE WAY
3400 W COMMODORE WAY, King, WA
Built 1900 ADT: 15,000
PEDESTRIAN
UnknownOver: SR 519/E MARTINEZ DR S
0.2 W JCT I-90, King, WA
Built 2006 ADT: 28,008
PEDESTRIAN
UnknownOver: ELLIOTT AVE
Olympic Sculpture Park, King, WA
Built 2007 ADT: 14,600
PEDESTRIAN
UnknownOver: PIKE ST
W/O 8th Ave & Pike St, King, WA
Built 2002 ADT: 13,000
PEDESTRIAN
UnknownOver: PIKE ST
E/O 8th Ave & Pike St, King, WA
Built 2002 ADT: 10,000
PEDESTRIAN
UnknownOver: 8TH AVE
N/O 8th Ave & Pike St, King, WA
Built 2008 ADT: 10,000
CENTRAL LINK
UnknownOver: 6TH AVE SOUTH
NORTHBOUND MILE POST 0.02, King, WA
Built 2004 ADT: 4,250
CENTRAL LINK
UnknownOver: AIRPORT WAY S
SOUTHBOUND MILE POST 0.02, King, WA
Built 2004 ADT: 6,800
Showing 601-650 of 8,808 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |