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
164TH ST SW
UnknownOver: I-5
1.3 N JCT I-405, Snohomish, WA
Built 1963 ADT: 154,119
I-405
UnknownOver: SR 524 (FILBERT RD)
1.5 E JCT I-5, Snohomish, WA
Built 1968 ADT: 21,475
I-405
UnknownOver: SR 524 (FILBERT RD)
1.5 E JCT I-5, Snohomish, WA
Built 1968 ADT: 21,475
I-5
UnknownOver: S 405 & N 525 RAMPS
1.4 N JCT SR 524, Snohomish, WA
Built 1980 ADT: 25,480
MAPLE ROAD
UnknownOver: I-5
0.3 N JCT I-405, Snohomish, WA
Built 1962 ADT: 134,243
164TH ST SW
UnknownOver: SR 525
1.4 N JCT I-5, Snohomish, WA
Built 1980 ADT: 56,760
148TH ST SW
UnknownOver: SR 525
2.4 N JCT I-5, Snohomish, WA
Built 1980 ADT: 56,760
I-405
UnknownOver: I-5
1.4 N JCT SR 524, Snohomish, WA
Built 1981 ADT: 134,243
I-405 NB TO I-5 SB
UnknownOver: RAMPS AND SWAMP CREEK
1.4 N JCT SR 524, Snohomish, WA
Built 1981 ADT: 15,523
I-405
UnknownOver: I-5
1.4 N JCT SR 524, Snohomish, WA
Built 1982 ADT: 134,243
THREE LAKES RD
UnknownOver: US 2
2.1 E JCT SR 9, Snohomish, WA
Built 1983 ADT: 22,670
88TH ST SE
UnknownOver: US 2
3.3 E JCT SR 9, Snohomish, WA
Built 1983 ADT: 19,400
220TH ST SW
UnknownOver: I-5
1.5 N JCT SR 104, Snohomish, WA
Built 1963 ADT: 159,714
SR 527
UnknownOver: I-5
2.8 N JCT SR 96, Snohomish, WA
Built 1987 ADT: 122,990
SR 96(128TH ST SW)
UnknownOver: I-5
3.8 N JCT I-405, Snohomish, WA
Built 1987 ADT: 144,746
US 2 RAMP
UnknownOver: US 2 WB, SR 204, RAMPS
JCT US 2, Snohomish, WA
Built 1993 ADT: 7,066
US 2 RAMP
UnknownOver: US 2 WB, SR 204
JCT US 2, Snohomish, WA
Built 1993 ADT: 7,066
I-5 RAMP
UnknownOver: NBCD
3.0 N JCT SR 523, Snohomish, WA
Built 1995 ADT: 12,344
S-S RAMP
UnknownOver: S-E RAMP
3.2 N JCT SR 523, Snohomish, WA
Built 1995 ADT: 11,927
SR 526 E-N RAMP
UnknownOver: I-5 BROADWAY AVE
JCT I-5 & SR 527, Snohomish, WA
Built 1995 ADT: 34,151
88TH ST NE
UnknownOver: I-5
1.6 N JCT SR 528, Snohomish, WA
Built 1996 ADT: 110,463
SR 9
UnknownOver: SR 522
0.6 E KING CO, Snohomish, WA
Built 1997 ADT: 29,880
SR 525
UnknownOver: SR 99
3.8 N JCT SR 524, Snohomish, WA
Built 2001 ADT: 37,579
RAMP
UnknownOver: SB I-5
2.9 N JCT SR 104, Snohomish, WA
Built 2004 ADT: 81,547
I-5 HOV LANES
UnknownOver: SR 524 SPUR/44TH AVE W
0.5 E JCT SR 524, Snohomish, WA
Built 2004 ADT: 26,181
SR 531
UnknownOver: I-5
7.0 N JCT SR 528, Snohomish, WA
Built 2005 ADT: 74,462
ASH WAY ACCESS
UnknownOver: I-5 SB
1.5 N JCT I-405, Snohomish, WA
Built 2005 ADT: 77,060
N-N RAMP
UnknownOver: I-5
3.1 N JCT SR 527, Snohomish, WA
Built 2006 ADT: 186,520
I-5 SB
UnknownOver: NB & SB HOV RAMPS
3.8 N JCT SR 527, Snohomish, WA
Built 2007 ADT: 2,017
41ST ST NE
UnknownOver: I-5
4.1 N JCT SR 527, Snohomish, WA
Built 2006 ADT: 153,336
PEDESTRIAN
UnknownOver: I-5
0.3 N JCT SR 96, Snohomish, WA
Built 2006 ADT: 144,746
CANYON PARK PED
UnknownOver: I-405
1.6 N KING CO, Snohomish, WA
Built 2007 ADT: 91,468
112TH ST SE
UnknownOver: I-5 SB
1.3 N JCT SR 96, Snohomish, WA
Built 2007 ADT: 82,582
112TH ST SE
UnknownOver: I-5 NB
1.3 N JCT SR 96, Snohomish, WA
Built 2007 ADT: 82,582
SOUND TRANSIT PED
UnknownOver: I-5 NB
0.6 N JCT SR 104, Snohomish, WA
Built 2010 ADT: 77,874
N-W RAMP(BICKFORD)
UnknownOver: US 2
1.3 N JCT SR 204, Snohomish, WA
Built 2013 ADT: 37,043
ALDERWOOD M BLVD
UnknownOver: SR 524 E-S, I-5 S-E
JCT SR 524, Snohomish, WA
Built 1999 ADT: 6,637
ALDERWOOD MALL BLV
UnknownOver: SR 524/196TH ST SW
1.6 E JCT SR 99, Snohomish, WA
Built 1999 ADT: 39,428
PEDESTRIAN
UnknownOver: I-5 S-W RAMP
JCT SR 524, Snohomish, WA
Built 2010 ADT: 14,897
116TH ST NE
UnknownOver: I-5
3.3 N JCT SR 528, Snohomish, WA
Built 2016 ADT: 98,781
BNSF RR
UnknownOver: LINCOLN AVE.
0.6 S JCT SR 2, Snohomish, WA
Built 1910 ADT: 4,539
BNSF RR
UnknownOver: INDEX-GALENA RD.
0.9 E JCT SR 2, Snohomish, WA
Built 1961 ADT: 718
PEDESTRIAN
UnknownOver: SR 529/W MARINE VIEW DR
1.2 N JCT SR 529 SPUR, Snohomish, WA
Built 1991 ADT: 13,663
FED.AV.PED.TRAFFIC
UnknownOver: E MUKILTEO BOULEVARD
0.9 MI W OF JCT I5, Snohomish, WA
Built 1993 ADT: 14,100
TULALIP PED BRIDGE
UnknownOver: MARINE DR
6.1 NE JCT I5, Snohomish, WA
Built 1997 ADT: 8,565
156TH ST NE
UnknownOver: INTERSTATE 5
8.9 N JCT SR 528, Snohomish, WA
Built 2012 ADT: 109,515
BNSF RAILROAD
UnknownOver: NORMAN ROAD
1.2 W JCT PIONEER HWY, Snohomish, WA
Built 2013 ADT: 609
UP RR
UnknownOver: STATE ROUTE 290
1.4 E JCT I-90, Spokane, WA
Built 1900 ADT: 8,316
FISH LAKE TRAIL
UnknownOver: I-90 RAMP
1.6 E JCT US 2, Spokane, WA
Built 1900 ADT: 2,496
RR
UnknownOver: US 2 / DIVISION ST
0.2 E JCT I-90, Spokane, WA
Built 1915 ADT: 27,424
Showing 1,001-1,050 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 |