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: DEXTER WAY N
7.4 N JCT SR 509, King, WA
Built 1930 ADT: 2,167
102ND AVE
UnknownOver: STATE ROUTE 522
4.1 E KCT SR 104, King, WA
Built 1950 ADT: 26,944
I-90 E-S RAMP
UnknownOver: I-5/AIRPORT WAY RAMP
JCT I-90, King, WA
Built 1965 ADT: 5,379
Central Conn Trail
UnknownOver: Redmond Way
0.5 MI N OF SR-520, King, WA
Built 1972 ADT: 27,000
PEDESTRIANS
UnknownOver: STATE ROUTE 202
3.9 E JCT SR 203, King, WA
Built 1987 ADT: 9,502
S 212TH ST
UnknownOver: SR 167 & SPRINGBROOK CK
2.8 N JCT SR 516, King, WA
Built 1973 ADT: 109,316
PED WALKWAY UC
UnknownOver: WEST LAKE SAMMAMISH PKWY
0.5 MI N OF JCT I-90, King, WA
Built 1950 ADT: 8,777
WOODLAND PARK PED
UnknownOver: SR 99
9.3 N JCT SR 509, King, WA
Built 1933 ADT: 34,369
WOODLAND PARK PED
UnknownOver: SR 99
9.4 N JCT SR 509, King, WA
Built 1933 ADT: 34,369
WOODLAND PARK PED
UnknownOver: SR 99
9.5 N JCT SR 509, King, WA
Built 1933 ADT: 34,369
SR 99
UnknownOver: DUWAMISH RIVER
0.1 N JCT SR 509, King, WA
Built 1956 ADT: 22,940
SR 18
UnknownOver: NPRY & CITY STREETS
1.0 E JCT SR 167, King, WA
Built 1956 ADT: 17,392
SR 18
UnknownOver: W VALLEY HWY(OLD SR 181)
2.3 E JCT I-5, King, WA
Built 1957 ADT: 19,821
MILITARY RD
UnknownOver: SR 18
1.7 E JCT I-5, King, WA
Built 1958 ADT: 101,558
SR 99
UnknownOver: SPOKANE ST
2.1 N JCT SR 509, King, WA
Built 1959 ADT: 14,020
DES MOINES MEM DR
UnknownOver: SR 99
1.9 N JCT SR 599, King, WA
Built 1959 ADT: 24,828
SR 18
UnknownOver: SR 164
JCT SR 18, King, WA
Built 1959 ADT: 26,034
SR 18
UnknownOver: BNRR, AUBURN-BLK DIAMOND
2.3 E JCT SR 164, King, WA
Built 1959 ADT: 9,224
I-5
UnknownOver: SR 18
0.3 E JCT SR 161, King, WA
Built 1959 ADT: 66,885
I-5
UnknownOver: SR 18
0.3 E JCT SR 161, King, WA
Built 1959 ADT: 66,885
I-5
UnknownOver: LAKE WASH SHIP CANAL
2.6 N JCT I-90, King, WA
Built 1962 ADT: 37,212
S 375TH ST
UnknownOver: I-5
0.7 N PIERCE CO, King, WA
Built 1959 ADT: 189,657
SR 161
UnknownOver: I-5
1.7 N PIERCE CO, King, WA
Built 1959 ADT: 189,657
NE 45TH ST
UnknownOver: I-5
1.7 N JCT SR 520, King, WA
Built 1960 ADT: 162,385
NE 50TH ST
UnknownOver: I-5
1.7 N JCT SR 520, King, WA
Built 1962 ADT: 162,385
S 320TH ST
UnknownOver: I-5
1.8 N JCT SR 18, King, WA
Built 1960 ADT: 158,689
RAMP 45TH TO I-5 N
UnknownOver: RAMP NB I-5 TO 50TH
1.7 N JCT SR 520, King, WA
Built 1961 ADT: 8,135
I-5 S RAMP TO 45TH
UnknownOver: 50TH RAMP TO I-5 S
1.7 N JCT SR 520, King, WA
Built 1961 ADT: 6,953
I-5
UnknownOver: S 272ND ST
4.8 N JCT SR 18, King, WA
Built 1961 ADT: 24,332
I-5
UnknownOver: S 272ND ST
4.8 N JCT SR 18, King, WA
Built 1961 ADT: 24,332
ROANOKE ST
UnknownOver: I-5
0.1 N JCT SR 520, King, WA
Built 1962 ADT: 147,676
SR 520 W-S RAMP
UnknownOver: I-5
0.1 N JCT SR 520, King, WA
Built 1962 ADT: 73,838
SR 18
UnknownOver: HOLDER CR HOBART RD
4.6 E JCT SR 169, King, WA
Built 1961 ADT: 8,691
OLIVE WAY
UnknownOver: I-5
1.6 N JCT I-90, King, WA
Built 1962 ADT: 181,753
DENNY WAY
UnknownOver: I-5
1.6 N JCT I-90, King, WA
Built 1962 ADT: 181,753
YALE ST RAMP
UnknownOver: I-5 REV RAMP
1.8 N JCT I-90, King, WA
Built 1962 ADT: 2,424
UITILITY
UnknownOver: REV LANES RAMP
1.8 N JCT I-90, King, WA
Built 1963 ADT: 2,424
I-5
UnknownOver: DENNY WAY-LAKEVIEW V
1.8 N JCT I-90, King, WA
Built 1962 ADT: 29,296
LAKEVIEW BLVD
UnknownOver: I-5
2.2 N JCT I-90, King, WA
Built 1963 ADT: 180,023
EASTLAKE AVE
UnknownOver: I-5 RAMPS
2.4 N JCT I-90, King, WA
Built 1963 ADT: 17,125
I-5
UnknownOver: SR 516
0.2 E JCT SR 99, King, WA
Built 1962 ADT: 35,066
I-5
UnknownOver: SR 516
0.2 E JCT SR 99, King, WA
Built 1962 ADT: 35,066
DELMAR DRIVE
UnknownOver: SR 520
0.1 E JCT I-5, King, WA
Built 1963 ADT: 35,304
10TH AVE
UnknownOver: SR 520
0.1 E JCT I-5, King, WA
Built 1962 ADT: 35,304
PEDESTRIAN
UnknownOver: SR 99
2.2 N JCT SR 599, King, WA
Built 1962 ADT: 24,828
NE 70TH-NE 71ST ST
UnknownOver: I-5
2.2 N JCT SR 520, King, WA
Built 1962 ADT: 149,425
8TH AVE N TO I-5 N
UnknownOver: I-5 N RAMP TO SR 522 E
JCT I-5, King, WA
Built 1963 ADT: 13,723
I-5 EXP RAMP
UnknownOver: I-5 NB,I-5 EXPRESS,RAMP
2.2 N JCT SR 520, King, WA
Built 1962 ADT: 74,713
SR 522
UnknownOver: W-S RAMP I-5
2.2 N JCT SR 520, King, WA
Built 1962 ADT: 149,425
I-405
UnknownOver: SUNSET BLVD (OLD SR 900)
1.1 E JCT SR 515, King, WA
Built 1963 ADT: 15,456
Showing 251-300 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 |