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
TUMWATER BLVD
UnknownOver: I-5
2.0 N JCT SR 121, Thurston, WA
Built 1986 ADT: 69,251
I-5
UnknownOver: PACIFIC AVE.
3.3 N JCT US 101, Thurston, WA
Built 1988 ADT: 20,913
PEDESTRIANS
UnknownOver: I-5
2.7 N JCT SR 121, Thurston, WA
Built 1987 ADT: 83,796
COLLEGE ST
UnknownOver: I-5
4.8 N JCT US 101, Thurston, WA
Built 1988 ADT: 110,242
LILLY ROAD
UnknownOver: I-5
3.8 N JCT US 101, Thurston, WA
Built 1988 ADT: 128,811
EASTSIDE STREET
UnknownOver: I-5
1.2 N JCT US 101, Thurston, WA
Built 1988 ADT: 118,213
US 101 NB
UnknownOver: I-5, RAMPS, STREET
5.0 N JCT SR 121, Thurston, WA
Built 1990 ADT: 99,802
E-S RAMP
UnknownOver: S-S RAMP
5.0 N JCT SR 121, Thurston, WA
Built 1990 ADT: 2,866
KAISER ROAD
UnknownOver: US 101
2.6 S JCT SR 8, Thurston, WA
Built 1989 ADT: 41,873
TROSPER RD
UnknownOver: I-5
3.5 N JCT SR 121, Thurston, WA
Built 1991 ADT: 83,796
ISRAEL RD
UnknownOver: I-5
2.4 N JCT SR 121, Thurston, WA
Built 1990 ADT: 69,251
STEAMBOAT ISL RD
UnknownOver: US 101 & SCHNEIDER CREEK
2.7 S MASON CO, Thurston, WA
Built 1995 ADT: 26,046
SR 510 (MARVIN RD)
UnknownOver: I-5
7.7 N JCT US 101, Thurston, WA
Built 2001 ADT: 84,306
CHEHALIS PED TRAIL
UnknownOver: I-5
4.0 N JCT US 101, Thurston, WA
Built 2007 ADT: 128,811
I-5
UnknownOver: SR 121 & RAILROAD
JCT I-5, Thurston, WA
Built 2010 ADT: 3,914
US 12
UnknownOver: I-5
JCT US 12, Thurston, WA
Built 2011 ADT: 55,210
PEDESTRIANS
UnknownOver: CAPITOL WAY
CAPITOL WAY S, Thurston, WA
Built 1973 ADT: 16,088
BNRR Main Line
UnknownOver: RAINIER RD.
0.3 S 70th Way, Thurston, WA
Built 1920 ADT: 8,230
RAILROAD
UnknownOver: OLD 99
3.4 N JCT SR507, Thurston, WA
Built 1922 ADT: 6,729
N P RAILROAD
UnknownOver: MULLEN ROAD
.7 m W Marvin Rd, Thurston, WA
Built 1950 ADT: 5,211
PARKS PED. TRAIL
UnknownOver: YELM HIGHWAY
.5 m W of College St, Thurston, WA
Built 1998 ADT: 24,000
CHEHALIS WEST TR
UnknownOver: MARTINWAY
0.3 W OF SLEATER KINNEY, Thurston, WA
Built 2010 ADT: 24,466
CHEHALIS WESTRN TR
UnknownOver: PACIFIC AVE.
0.3 WEST OF SLEATER KINNE, Thurston, WA
Built 2014 ADT: 24,185
UP RR
UnknownOver: SR 125 / PINE ST
5.9 N OREGON, Walla Walla, WA
Built 1934 ADT: 5,332
RAILROAD
UnknownOver: STATE ROUTE 125
16.6 N JCT SR 125 SPUR, Walla Walla, WA
Built 1941 ADT: 402
US 12
UnknownOver: AIRPORT RD
4.5 E JCT SR 125 SPUR, Walla Walla, WA
Built 1971 ADT: 3,336
US 12
UnknownOver: 2ND AVE & BN RR
1.3 E JCT SR 125 SPUR, Walla Walla, WA
Built 1971 ADT: 10,596
US 12
UnknownOver: SR 125
0.1 N JCT SR 125 SPUR, Walla Walla, WA
Built 1972 ADT: 3,162
US 12
UnknownOver: MYRA RD
0.7 W JCT SR 125, Walla Walla, WA
Built 2009 ADT: 4,794
US 12
UnknownOver: MYRA RD
0.7 W JCT SR 125, Walla Walla, WA
Built 2009 ADT: 4,794
SR 124
UnknownOver: US 12
0.7 E FRANKLIN CO, Walla Walla, WA
Built 2012 ADT: 25,898
HUMORIST ROAD
UnknownOver: US 12
1.1 E JCT SR 124, Walla Walla, WA
Built 2012 ADT: 13,912
CUMMINS ROAD
UnknownOver: US 12
11.6 E JCT US 730 SPUR, Walla Walla, WA
Built 2023 ADT: 7,778
US 12
UnknownOver: TOUCHET NORTH RD
12.0 E JCT US 730 SPUR, Walla Walla, WA
Built 2022 ADT: 333
I-5 OFF RAMP
UnknownOver: SR 539, CREEK
JCT I-5, Whatcom, WA
Built 1988 ADT: 38,656
I-5
UnknownOver: IOWA ST
3.1 N JCT SR 11, Whatcom, WA
Built 1957
I-5
UnknownOver: SR 539 MERIDIAN ST
JCT I-5, Whatcom, WA
Built 1958 ADT: 38,656
I-5
UnknownOver: SR 539 MERIDIAN ST
JCT I-5, Whatcom, WA
Built 1958 ADT: 38,656
ALABAMA ST
UnknownOver: I-5
3.5 N JCT SR 11, Whatcom, WA
Built 1958 ADT: 76,839
I-5
UnknownOver: NORTHWEST AVE
0.8 N JCT SR 539, Whatcom, WA
Built 1958
I-5
UnknownOver: NORTHWEST AVE
0.8 N JCT SR 539, Whatcom, WA
Built 1958 ADT: 49,138
PEDESTRIAN
UnknownOver: I-5
3.7 N JCT SR 11, Whatcom, WA
Built 1959 ADT: 76,839
PEDESTRIANS
UnknownOver: I-5
3.9 N JCT SR 11, Whatcom, WA
Built 1960 ADT: 57,095
PORTAL WAY
UnknownOver: I-5
9.0 N JCT SR 539, Whatcom, WA
Built 1961 ADT: 36,168
MITCHELL AVE
UnknownOver: I-5
0.4 N JCT SR 543, Whatcom, WA
Built 1963 ADT: 3,830
H ST
UnknownOver: I-5
0.7 N JCT SR 543, Whatcom, WA
Built 1962 ADT: 3,830
SR 548/GRANDVIEW
UnknownOver: I-5
9.7 N JCT SR 539, Whatcom, WA
Built 1962 ADT: 22,338
CUSTER SCHOOL RD
UnknownOver: I-5, RAMP
3.0 N JCT SR 548, Whatcom, WA
Built 1962 ADT: 27,450
BIRCH BAY-LYNDEN R
UnknownOver: I-5
4.3 N JCT SR 548, Whatcom, WA
Built 1961 ADT: 14,164
LOOMIS TRAIL RD
UnknownOver: I-5
5.6 N JCT SR 548, Whatcom, WA
Built 1963 ADT: 15,108
Showing 1,201-1,250 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 |