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
SR 99
UnknownOver: TUKWILA INT'L BLVD
1.8 N JCT I-5, King, WA
Built 1966 ADT: 21,114
S-S RAMP
UnknownOver: S 116TH WAY
1.8 N JCT I-5, King, WA
Built 1966 ADT: 1,756
SR 99
UnknownOver: TUKWILA INT'L BLVD
1.8 N JCT I-5, King, WA
Built 1966 ADT: 21,114
ABERDEEN AVE NE
UnknownOver: SR 900
0.3 E JCT I-405, King, WA
Built 1967 ADT: 24,027
E MARGINAL WAY
UnknownOver: SR 599
1.4 N JCT I-5, King, WA
Built 1967 ADT: 40,145
SR 167
UnknownOver: SR 516
0.1 E JCT SR 181, King, WA
Built 1967 ADT: 38,206
SR 167
UnknownOver: SR 516
0.1 E JCT SR 181, King, WA
Built 1967 ADT: 38,206
SR 167
UnknownOver: JAMES ST
0.6 N JCT SR 516, King, WA
Built 1967 ADT: 17,200
12TH AVE S
UnknownOver: I-90
0.2 E JCT I-5, King, WA
Built 1968 ADT: 9,982
I-90 RAMP TO I-405
UnknownOver: I-90 MAINLINE
JCT I-405, King, WA
Built 1969 ADT: 63,576
W-N RAMP TO I-405
UnknownOver: S-W RAMP TO I-90
0.1 E JCT I-405, King, WA
Built 1968 ADT: 12,098
I-90
UnknownOver: W-S RAMP RICHARD RD
0.2 E JCT I-405, King, WA
Built 1969 ADT: 20,968
I-90 W-S RAMP
UnknownOver: I-90 MAINLINE
JCT I-405, King, WA
Built 1969 ADT: 63,576
I-405
UnknownOver: I-90 FACTORIA
JCT I-405, King, WA
Built 1969 ADT: 63,576
I-405 NB HOV
UnknownOver: I-90 FACTORIA
JCT I-405, King, WA
Built 1969 ADT: 63,576
I-405 RAMP
UnknownOver: EB I-90 RAMP
JCT I-405, King, WA
Built 1969 ADT: 14,083
I-5
UnknownOver: N-W RAMP E-N RAMP
2.2 N JCT I-90, King, WA
Built 1967 ADT: 22,473
S 132ND ST PED
UnknownOver: SR 509
1.0 N JCT SR 518, King, WA
Built 1968 ADT: 58,437
SR 509
UnknownOver: N-N RAMP
4.0 N JCT SR 518, King, WA
Built 1968 ADT: 43,832
CLOVERDALE ST
UnknownOver: SR 509
4.0 N JCT SR 518, King, WA
Built 1968 ADT: 43,832
195TH ST
UnknownOver: I-405
0.8 N JCT SR 522, King, WA
Built 1968 ADT: 104,974
NP RY FACTORI
UnknownOver: INTERSTATE ROUTE 90
7.0 E JCT I-5, King, WA
Built 1967 ADT: 84,429
I-405
UnknownOver: SR 522 SAMMAMISH R
1.3 E JCT SR 527, King, WA
Built 1968 ADT: 24,447
I-405
UnknownOver: SR 522 SAMMAMISH R
1.3 E JCT SR 527, King, WA
Built 1968 ADT: 24,447
I-405 N-W RAMP
UnknownOver: SAMMAMISH R, I-405, SR 5
8.7 N JCT SR 520, King, WA
Built 1968 ADT: 110,142
SR 522
UnknownOver: SAMMAMISH RIVER
JCT SR 522, King, WA
Built 1968 ADT: 110,142
S 277TH ST
UnknownOver: SR 167
3.6 N JCT SR 18, King, WA
Built 1968 ADT: 112,926
I-90
UnknownOver: SR 906 W-W RAMP
JCT I-90, King, WA
Built 1969 ADT: 1,148
160TH/BRICKYARD RD
UnknownOver: I-405
7.8 N JCT SR 520, King, WA
Built 1969 ADT: 146,349
SR 900
UnknownOver: I-90
6.0 E JCT I-405, King, WA
Built 1970 ADT: 78,544
S136TH ST
UnknownOver: SR 509
0.8 N JCT SR 518, King, WA
Built 1969 ADT: 58,437
I-90
UnknownOver: MERCER SL
6.4 E JCT I-5, King, WA
Built 1970 ADT: 9,916
I-90
UnknownOver: MERCER SLOUGH
6.4 E JCT I-5, King, WA
Built 1940 ADT: 9,916
I-90 S-E RAMP
UnknownOver: I-90 MERCER SLOUGH
6.4 E JCT I-5, King, WA
Built 1970 ADT: 136,899
I-90 W-N RAMP
UnknownOver: I-90 WBCD
6.4 E JCT I-5, King, WA
Built 1969 ADT: 21,966
NE 124TH ST
UnknownOver: I-405
5.5 N JCT SR 520, King, WA
Built 1969 ADT: 127,595
24TH AVE S
UnknownOver: SR 518, RAMPS
1.5 E JCT SR 509, King, WA
Built 1970 ADT: 68,142
NE 72ND PLACE
UnknownOver: I-405
2.6 N JCT SR 520, King, WA
Built 1970 ADT: 164,679
NE 80TH ST PED
UnknownOver: I-405
3.0 N JCT SR 520, King, WA
Built 1970 ADT: 158,156
I-405 NBCD
UnknownOver: NE 85TH ST
JCT I-405, King, WA
Built 1970 ADT: 44,198
I-405
UnknownOver: NE 85TH ST
JCT I-405, King, WA
Built 1971 ADT: 44,198
I-405
UnknownOver: NE 85TH ST
JCT I-405, King, WA
Built 1971 ADT: 44,198
I-405 SBCD
UnknownOver: NE 85TH ST
JCT I-405, King, WA
Built 1971 ADT: 44,198
SO 160TH ST
UnknownOver: SR 509
6.3 N JCT SR 516, King, WA
Built 1971 ADT: 22,507
S 156TH ST
UnknownOver: SR 509
6.5 N JCT SR 516, King, WA
Built 1970 ADT: 35,130
SO 152ND ST
UnknownOver: SR 509
6.8 N JCT SR 516, King, WA
Built 1971 ADT: 35,130
SO 146TH ST
UnknownOver: SR 509
0.1 N JCT SR 518, King, WA
Built 1970 ADT: 23,969
SR 518
UnknownOver: SR 509
7.0 N JCT SR 516, King, WA
Built 1971 ADT: 23,969
S 154TH ST
UnknownOver: SR 518
1.9 E JCT SR 509, King, WA
Built 1971 ADT: 51,803
I-405
UnknownOver: SE 8TH ST
1.7 N JCT I-90, King, WA
Built 1971 ADT: 19,658
Showing 401-450 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 |