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
I-5
UnknownOver: NE NORTHGATE WAY
2.0 N JCT SR 522, King, WA
Built 1964 ADT: 45,581
I-5
UnknownOver: NE NORTHGATE WAY
2.0 N JCT SR 522, King, WA
Built 1964 ADT: 46,050
SR 18
UnknownOver: M STREET
0.6 E JCT SR 164, King, WA
Built 1984 ADT: 18,226
I-90 EB
UnknownOver: I-90 WB
JCT I-5, King, WA
Built 1988 ADT: 9,982
NE 51ST STREET
UnknownOver: SR 520
3.9 E JCT I-405, King, WA
Built 1987 ADT: 61,404
NE 4TH STREET
UnknownOver: I-405
2.4 N JCT I-90, King, WA
Built 1987 ADT: 9,639
I-90
UnknownOver: RAINIER AVE
0.6 E JCT I-5, King, WA
Built 1988 ADT: 28,381
CITY ST - 76TH AVE
UnknownOver: I-90
4.0 E JCT I-5, King, WA
Built 1989 ADT: 125,642
77TH AVE SE
UnknownOver: I-90
4.2 E JCT I-5, King, WA
Built 1989 ADT: 118,092
80TH AVE
UnknownOver: I-90
4.4 E JCT I-5, King, WA
Built 1988 ADT: 118,092
ISLAND CREST WAY
UnknownOver: I-90
4.5 E JCT I-5, King, WA
Built 1989 ADT: 118,092
EAST MERCER WAY
UnknownOver: I-90
5.7 E JCT I-5, King, WA
Built 1988 ADT: 123,219
NORTH MERCER WAY
UnknownOver: I-90
5.4 E JCT I-5, King, WA
Built 1989 ADT: 123,219
NE 4TH ST
UnknownOver: CITY STREET AND SBCD
2.4 N JCT I-90, King, WA
Built 1989 ADT: 16,919
SHOREWOOD DRIVE
UnknownOver: I-90
5.0 E JCT I-5, King, WA
Built 1989 ADT: 123,219
I-5
UnknownOver: METRO ACCESS
0.9 N JCT SR 523, King, WA
Built 1990 ADT: 1,144
66TH AVE S
UnknownOver: I-405
0.8 N JCT I-5, King, WA
Built 1990 ADT: 153,756
LIND AVE (88TH AVE
UnknownOver: I-405
1.1 N JCT SR 181, King, WA
Built 1990 ADT: 166,259
SE 180TH AVE
UnknownOver: SR 18
0.9 E JCT SR 516, King, WA
Built 1988 ADT: 36,767
SR 202
UnknownOver: SR 522
0.8 E JCT I-405, King, WA
Built 1989 ADT: 62,639
SOUND TRANSIT RAIL
UnknownOver: I-5 & CITY STREETS
JCT I-90, King, WA
Built 1991 ADT: 5,488
SE 28TH ST
UnknownOver: I-90 E-S RAMP
4.4 E JCT I-5, King, WA
Built 1992 ADT: 5,539
I-90
UnknownOver: CITY STREETS
0.1 N JCT I-90, King, WA
Built 1991 ADT: 27,000
NE 124TH ST
UnknownOver: RAMP/120TH AVE
5.5 N JCT SR 520, King, WA
Built 1990 ADT: 6,271
PEDESTRIAN
UnknownOver: RAINIER AVE S
0.6 E JCT I-5, King, WA
Built 1992 ADT: 28,381
I-90
UnknownOver: RAINIER AVE S
0.6 E JCT I-5, King, WA
Built 1992 ADT: 28,381
PEDESTRIAN
UnknownOver: SR 90 RAMP
0.7 E JCT I-5, King, WA
Built 1992 ADT: 8,799
E-E RAMP
UnknownOver: I-90, RAMPS, MERCER SL
6.4 E JCT I-5, King, WA
Built 1993 ADT: 68,450
S-E RAMP I-405
UnknownOver: SR 520
JCT I-405, King, WA
Built 1993 ADT: 64,231
E-N RAMP SR 520
UnknownOver: I-405 & SR 520
3.7 N JCT I-90, King, WA
Built 1993 ADT: 162,591
RENTON AVE S
UnknownOver: SR 405
0.9 N JCT SR 515, King, WA
Built 1994 ADT: 169,413
CEDAR AVE S
UnknownOver: I-405
0.8 N JCT SR 515, King, WA
Built 1993 ADT: 169,413
I-405
UnknownOver: SR 169
10.0 N JCT SR 18, King, WA
Built 1994 ADT: 39,269
I-90 RAMP
UnknownOver: MERCER SLOUGH, I-90
6.4 E JCT I-5, King, WA
Built 1995 ADT: 68,450
BICYCLE/PEDESTR.
UnknownOver: I-90 RAMP EB TO RAINIER
0.6 E JCT I-5, King, WA
Built 1995 ADT: 6,034
I-5 SBCD
UnknownOver: SR 104/205TH ST
1.2 E JCT SR 99, King, WA
Built 1995 ADT: 43,749
SR 18
UnknownOver: BNRR, AUBURN-BLK DIAMOND
2.3 E JCT SR 164, King, WA
Built 1995 ADT: 9,224
PEDESTRIANS
UnknownOver: SR 519
W END MARION ST, King, WA
Built 1994 ADT: 12,000
SR 520
UnknownOver: PKWY & SAMMAMISH RIVER
4.9 E JCT I-405, King, WA
Built 1995 ADT: 38,940
SR 520
UnknownOver: SR 202 & BIKE PATH
7.7 E JCT SR 522, King, WA
Built 1995 ADT: 35,875
ACCESS (AVONDALE)
UnknownOver: RAMP & NE 76TH
0.1 E JCT SR 520, King, WA
Built 1996 ADT: 16,261
SR 99
UnknownOver: DUWAMISH RIVER
0.1 N JCT SR 509, King, WA
Built 1996 ADT: 22,940
I-5 RAMP
UnknownOver: NORTHGATE WAY
2.0 N JCT SR 522, King, WA
Built 1995 ADT: 45,581
SE 188TH ST
UnknownOver: SR 18
4.0 E JCT SR 169, King, WA
Built 1996 ADT: 22,663
SR 18
UnknownOver: HOLDER CR HOBART RD
4.6 E JCT SR 169, King, WA
Built 1996 ADT: 8,691
I-5 HOV LANES
UnknownOver: I-405 NB, RAMPS
JCT I-5, King, WA
Built 1996 ADT: 36,699
E-N RAMP
UnknownOver: SR 900
JCT I-405, King, WA
Built 1997 ADT: 25,253
304TH ST
UnknownOver: SR 18
4.6 E JCT SR 164, King, WA
Built 1997 ADT: 54,920
SE 312TH WAY
UnknownOver: SR 18
3.8 E JCT SR 164, King, WA
Built 1997 ADT: 54,920
COVINGTON WAY SE
UnknownOver: SR 18
7.1 E JCT SR 164, King, WA
Built 1997 ADT: 28,822
Showing 501-550 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 |