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
YESLER WAY
UnknownOver: I-5
1.2 N JCT I-90, King, WA
Built 1965 ADT: 139,825
N-W RAMP
UnknownOver: I-5
6.9 N JCT SR 900, King, WA
Built 1966 ADT: 139,825
I-90 W-S RAMP
UnknownOver: I-5
6.9 N JCT SR 900, King, WA
Built 1965 ADT: 139,825
I-90
UnknownOver: I-5
6.9 N JCT SR 900, King, WA
Built 1966 ADT: 139,825
E-N RAMP
UnknownOver: I-5
6.9 N JCT SR 900, King, WA
Built 1965 ADT: 139,825
I-5 S-E RAMP
UnknownOver: I-5, RAMPS, RAILROAD
7.1 N JCT SR 900, King, WA
Built 1965 ADT: 139,825
I-5
UnknownOver: DEARBORN ST
JCT I-90, King, WA
Built 1965 ADT: 21,770
I-5
UnknownOver: DEARBORN ST
JCT I-90, King, WA
Built 1965 ADT: 21,770
I-5 NBCD
UnknownOver: DEARBORN ST
JCT I-90, King, WA
Built 1965 ADT: 21,770
I-5 SBCD
UnknownOver: DEARBORN ST
JCT I-90, King, WA
Built 1965 ADT: 21,770
S-W RAMP
UnknownOver: AIRPORT WAY S
JCT I-90, King, WA
Built 1966 ADT: 5,480
I-90 WCD RAMP
UnknownOver: DEARBORN STREET
JCT I-90, King, WA
Built 1965 ADT: 20,500
DEARBORN-N RAMP
UnknownOver: I-5 NBCD
JCT I-90, King, WA
Built 1965 ADT: 15,180
I-90
UnknownOver: I-5
JCT I-5, King, WA
Built 1966 ADT: 9,982
I-405
UnknownOver: N-W RAMP
3.6 N JCT I-90, King, WA
Built 1965 ADT: 8,168
I-405
UnknownOver: N-W RAMP
3.6 N JCT I-90, King, WA
Built 1966 ADT: 8,168
I-405
UnknownOver: SR 520
JCT I-405, King, WA
Built 1966 ADT: 86,292
I-405
UnknownOver: SR 520
JCT I-405, King, WA
Built 1966 ADT: 86,292
N-W RAMP
UnknownOver: SR 520
JCT I-405, King, WA
Built 1966 ADT: 64,231
S 144TH ST
UnknownOver: I-5, SOUND TRANSIT RR
0.9 N JCT I-405, King, WA
Built 1965 ADT: 230,246
I-5 P1 15559 RAMP
UnknownOver: I-5, HOV LANE
1.5 N JCT I-405, King, WA
Built 1966 ADT: 169,761
I-5
UnknownOver: INTERURBAN AVE
0.1 N JCT SR 599, King, WA
Built 1966 ADT: 17,498
I-5
UnknownOver: INTERURBAN AVE
0.1 N JCT SR 599, King, WA
Built 1966 ADT: 20,516
S BOEING ACCESS RD
UnknownOver: I-5
0.5 N JCT SR 900, King, WA
Built 1966 ADT: 185,464
SR 599
UnknownOver: I-5 (SB LANES ONLY)
1.5 N JCT I-405, King, WA
Built 1966 ADT: 84,881
SR 900
UnknownOver: I-5
1.6 N JCT SR 599, King, WA
Built 1966 ADT: 190,540
SR 900
UnknownOver: I-5
1.3 N JCT SR 599, King, WA
Built 1966 ADT: 188,568
NE 44TH ST
UnknownOver: I-405
2.0 N JCT SR 900, King, WA
Built 1965 ADT: 137,350
LAKE WASHINGTON BV
UnknownOver: I-405
3.8 N JCT SR 900, King, WA
Built 1965 ADT: 143,139
I-405
UnknownOver: COAL CREEK PARKWAY SE
4.8 N JCT SR 900, King, WA
Built 1965 ADT: 29,232
I-405
UnknownOver: COAL CREEK PARKWAY SE
4.8 N JCT SR 900, King, WA
Built 1965 ADT: 29,232
ALBRO ST
UnknownOver: I-5
3.9 N JCT SR 900, King, WA
Built 1966 ADT: 190,268
BEACON-HOLGATE
UnknownOver: I-5
6.5 N JCT SR 900, King, WA
Built 1966 ADT: 247,063
I-5
UnknownOver: N-W RAMP
3.9 N JCT SR 900, King, WA
Built 1966 ADT: 3,978
E-N RAMP
UnknownOver: I-5
3.9 N JCT SR 900, King, WA
Built 1966 ADT: 190,268
NB I5 OFF RAMP
UnknownOver: W-S, I5, EB W SEA FRWY
5.6 N JCT SR 900, King, WA
Built 1967 ADT: 189,801
I-5 N - 6TH RAMP
UnknownOver: E-6TH RAMP EB LANES
5.6 N JCT SR 900, King, WA
Built 1967 ADT: 28,260
E-N RAMP
UnknownOver: I-5
5.6 N JCT SR 900, King, WA
Built 1966 ADT: 189,801
W-S RAMP
UnknownOver: I-5 MAINLINE AND RAMPS
5.6 N JCT SR 900, King, WA
Built 1967 ADT: 189,801
I-5
UnknownOver: E-S RAMP BR
5.5 N JCT SR 900, King, WA
Built 1967 ADT: 2,500
I-5
UnknownOver: 6TH-S RAMP BR
5.5 N JCT SR 900, King, WA
Built 1967 ADT: 2,500
I-5 SB OFF RAMP
UnknownOver: S-E RAMP TO COLUMBIA WAY
5.6 N JCT SR 900, King, WA
Built 1967 ADT: 189,801
SPOKANE ST WB LANE
UnknownOver: I-5
5.6 N JCT SR 900, King, WA
Built 1967 ADT: 189,801
SPOKANE ST EB LANE
UnknownOver: I-5
5.5 N JCT SR 900, King, WA
Built 1966 ADT: 189,801
I-405
UnknownOver: SR 900 / N PARK DR
JCT I-405, King, WA
Built 1966 ADT: 25,253
I-405
UnknownOver: SR 900 / N PARK DR
JCT I-405, King, WA
Built 1966 ADT: 25,253
SR 520
UnknownOver: 108TH AVE NE
5.2 E JCT SR 513, King, WA
Built 1966 ADT: 15,083
S 129TH ST
UnknownOver: I-5
0.5 N JCT SR 599, King, WA
Built 1966 ADT: 188,568
RAMP TO I-5 NB/SB
UnknownOver: CITY STS, RAMP & RR
3.8 N JCT SR 900, King, WA
Built 1966 ADT: 13,467
N-N RAMP
UnknownOver: SR 599 SB / SR 99 SB
1.7 N JCT I-5, King, WA
Built 1966 ADT: 20,073
Showing 351-400 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 |