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
WEYERHAEUSER WAY S
UnknownOver: SR 18
0.7 E JCT I-5, King, WA
Built 1970 ADT: 55,921
W MAIN ST
UnknownOver: SR 167
0.1 N JCT SR 18, King, WA
Built 1972 ADT: 43,163
15TH ST NW
UnknownOver: SR 167
1.5 N JCT SR 18, King, WA
Built 1972 ADT: 114,151
37TH ST NW
UnknownOver: SR 167
2.7 N JCT SR 18, King, WA
Built 1971 ADT: 129,748
SR 518
UnknownOver: N-W RAMP, SR 518
1.9 E JCT SR 509, King, WA
Built 1971 ADT: 51,803
I-90
UnknownOver: 468TH AVE SE
4.4 E JCT SR 202, King, WA
Built 1971 ADT: 5,568
I-90
UnknownOver: 468TH AVE SE
4.4 E JCT SR 202, King, WA
Built 1971 ADT: 5,568
SR 520
UnknownOver: 124 AVE NE - NW RAMP
0.6 E JCT I-405, King, WA
Built 1971 ADT: 13,000
SR 520
UnknownOver: 124 AVE NE - NW RAMP
0.6 E JCT I-405, King, WA
Built 1971 ADT: 13,000
HANSEN CR RD
UnknownOver: I-90
17.1 E JCT SR 202, King, WA
Built 1971 ADT: 35,874
I-90
UnknownOver: W LAKE SAMMAMISH PKWY
3.7 E JCT I-405, King, WA
Built 1972 ADT: 15,961
I-90
UnknownOver: W LAKE SAMMAMISH PKWY
3.7 E JCT I-405, King, WA
Built 1972 ADT: 15,961
I-90 RAMP
UnknownOver: W LAKE SAMMAMISH PKWY
3.7 E JCT I-405, King, WA
Built 1972 ADT: 15,759
150TH AVE SE
UnknownOver: I-90
1.7 E JCT I-405, King, WA
Built 1973 ADT: 127,706
150TH AVE SE
UnknownOver: I-90
1.7 E JCT I-405, King, WA
Built 1973 ADT: 127,706
TINKHAM RD
UnknownOver: I-90
11.7 E JCT SR 202, King, WA
Built 1973 ADT: 36,310
15TH ST SW
UnknownOver: SR 167
2.3 N PIERCE CO, King, WA
Built 1975 ADT: 90,546
SR 167 NB
UnknownOver: SR 18
2.3 E JCT I-5, King, WA
Built 1973 ADT: 57,729
SR 167
UnknownOver: SR 18
2.3 E JCT I-5, King, WA
Built 1973 ADT: 57,729
NB RAMP
UnknownOver: N-E RAMP
2.7 N PIERCE CO, King, WA
Built 1975 ADT: 10,288
SR 167 RAMP
UnknownOver: SR 18
2.3 E JCT I-5, King, WA
Built 1974 ADT: 57,729
RAMP
UnknownOver: I-90, RAMPS, CITY STREET
1.7 E JCT I-405, King, WA
Built 1973 ADT: 127,706
148TH ST-W RAMP
UnknownOver: I-90 WBCD RAMP
1.7 E JCT I-405, King, WA
Built 1973 ADT: 2,858
I-405
UnknownOver: SE 8TH ST OC
1.7 N JCT I-90, King, WA
Built 1972 ADT: 19,658
SE 231ST ST
UnknownOver: SR 18
4.3 E JCT SR 516, King, WA
Built 1972 ADT: 26,396
S EASTGATE PEDESTR
UnknownOver: I-90 RAMPS
1.7 N JCT I-405, King, WA
Built 1973 ADT: 7,357
N EASTGATE PEDESTR
UnknownOver: EASTGATE WAY & W-S RAMP
1.7 E JCT I-405, King, WA
Built 1973 ADT: 2,858
PEDESTRIAN
UnknownOver: I-90
3.3 E JCT I-405, King, WA
Built 1973 ADT: 113,791
I-90
UnknownOver: HOMESTEAD VALLEY RD
7.5 E JCT SR 202, King, WA
Built 1974 ADT: 213
I-90
UnknownOver: HOMESTEAD VALLEY RD
7.5 E JCT SR 202, King, WA
Built 1974 ADT: 213
I-90
UnknownOver: SR 18
12.1 E JCT SR 169, King, WA
Built 1975 ADT: 21,327
I-90
UnknownOver: HIGH POINT RD
4.4 E JCT SR 900, King, WA
Built 1975 ADT: 931
436TH AVE SE
UnknownOver: I-90
2.3 E JCT SR 202, King, WA
Built 1976 ADT: 37,344
SE 82ND ST
UnknownOver: I-90
6.7 E JCT SR 900, King, WA
Built 1975 ADT: 55,271
W-S RAMP I-90
UnknownOver: I-90
2.2 E JCT SR 900, King, WA
Built 1976 ADT: 59,685
142ND PL SE
UnknownOver: I-90, RAMPS, CITY STREET
1.2 E JCT I-405, King, WA
Built 1976 ADT: 127,706
I-90
UnknownOver: SR 202
8.8 E JCT SR 203, King, WA
Built 1976 ADT: 10,067
I-90
UnknownOver: SR 202
8.8 E JCT SR 203, King, WA
Built 1975 ADT: 10,067
SR 520
UnknownOver: WLS PKWY & SAMMAMISH R
4.9 E JCT I-405, King, WA
Built 1976 ADT: 38,940
PEDESTRIAN TRAFFIC
UnknownOver: I-405
2.0 N JCT SR 520, King, WA
Built 1978 ADT: 175,928
CLOSED S 176TH ST
UnknownOver: SR 509
5.2 N JCT SR 516, King, WA
Built 1979 ADT: 28,216
SR 509
UnknownOver: DES MOINES MEMORIAL
5.8 N JCT SR 516, King, WA
Built 1979 ADT: 5,467
NE 40TH ST
UnknownOver: SR 520
3.2 E JCT I-405, King, WA
Built 1980 ADT: 61,404
EQUESTRIAN TRAFFIC
UnknownOver: SR 520
4.3 E JCT I-405, King, WA
Built 1980 ADT: 61,404
SR 509
UnknownOver: SR 509/DES MOINES MEM
4.7 N JCT SR 516, King, WA
Built 1979 ADT: 9,478
SR 18
UnknownOver: SR 516
4.1 E JCT SR 515, King, WA
Built 1979 ADT: 26,572
FLYER STOP PED TRF
UnknownOver: SB 405 OFF RAMP TO 72ND
2.6 N JCT SR 520, King, WA
Built 1980 ADT: 5,919
148TH AVE
UnknownOver: SR 520
2.3 E JCT I-405, King, WA
Built 1981 ADT: 86,292
NE 30TH ST
UnknownOver: SR 405
1.1 N JCT SR 900, King, WA
Built 1981 ADT: 136,172
TALBOT HILL PED.
UnknownOver: SR 515
6.2 N JCT SR 516, King, WA
Built 1983 ADT: 23,820
Showing 451-500 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 |