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-82
UnknownOver: SR 821, WHIPPLE WASTEWAY
20.4 N YAKIMA CO, Kittitas, WA
Built 1970 ADT: 1,151
WEST EASTON RD
UnknownOver: I-90
15.6 E JCT SR 906, Kittitas, WA
Built 1975 ADT: 31,548
COLLINS DRIVE
UnknownOver: US 97
9.6 N JCT SR 14, Klickitat, WA
Built 1972 ADT: 5,130
STATE PARKS TRAIL
UnknownOver: STATE ROUTE 6
4.9 E PACIFIC CO, Lewis, WA
Built 1931 ADT: 2,463
I-5
UnknownOver: SR 507 MELLEN ST
JCT I-5, Lewis, WA
Built 1951 ADT: 6,179
WEST ST
UnknownOver: I-5
0.4 N JCT SR 6, Lewis, WA
Built 1953 ADT: 76,505
I-5
UnknownOver: COWLITZ RIVER
2.0 N COWLITZ CO, Lewis, WA
Built 1953 ADT: 360
I-5
UnknownOver: COWLITZ RIVER
2.0 N COWLITZ CO, Lewis, WA
Built 1953 ADT: 360
SR 505
UnknownOver: I-5
JCT SR 505, Lewis, WA
Built 1954 ADT: 39,562
13TH ST RICE
UnknownOver: I-5
5.5 N JCT SR 508, Lewis, WA
Built 1958 ADT: 60,438
US 12
UnknownOver: I-5
5.0 N JCT SR 505, Lewis, WA
Built 1958 ADT: 42,189
SR 506
UnknownOver: I-5
JCT SR 506, Lewis, WA
Built 1958 ADT: 41,665
BRIDGEOVER RD
UnknownOver: US 12
5.0 E JCT SR 7, Lewis, WA
Built 1966 ADT: 4,992
I-5
UnknownOver: HARRISON AVE
1.1 N JCT SR 507, Lewis, WA
Built 1972 ADT: 24,802
ROGERS RD
UnknownOver: I-5
0.2 N COWLITZ CO, Lewis, WA
Built 1976 ADT: 41,227
KOONTZ RD
UnknownOver: I-5
1.0 N JCT US 12, Lewis, WA
Built 1976 ADT: 51,653
PARK RD
UnknownOver: I-5
3.0 N JCT SR 505, Lewis, WA
Built 1977 ADT: 44,966
SR 6
UnknownOver: I-5
6.9 N JCT SR 508, Lewis, WA
Built 1980 ADT: 65,022
SR 508
UnknownOver: I-5
2.6 N JCT US 12, Lewis, WA
Built 1986 ADT: 50,392
LABREE ROAD
UnknownOver: I-5
3.7 N JCT SR 508, Lewis, WA
Built 2008 ADT: 59,955
SR 507 NB
UnknownOver: I-5, RAMP
3.4 N JCT SR 6, Lewis, WA
Built 2014 ADT: 65,245
CHAMBER WAY
UnknownOver: I-5
1.1 N JCT SR 6, Lewis, WA
Built 2018 ADT: 64,598
PEDESTRIANS
UnknownOver: SR 6
23.4 E PACIFIC CO, Lewis, WA
Built 2023 ADT: 8,850
GN RY
UnknownOver: STATE ROUTE 28
1.7 E JCT SR 21, Lincoln, WA
Built 1933 ADT: 561
FISHTRAP
UnknownOver: I-90
8.8 E JCT SR 23, Lincoln, WA
Built 1967 ADT: 20,720
I-90
UnknownOver: SR 23
4.4 N WHITMAN CO, Lincoln, WA
Built 1967 ADT: 1,069
I-90
UnknownOver: SR 23
4.4 N WHITMAN CO, Lincoln, WA
Built 1967 ADT: 1,069
NP RR
UnknownOver: STATE ROUTE 3
3.3 N JCT US 101, Mason, WA
Built 1944 ADT: 10,584
NP RY
UnknownOver: STATE ROUTE 3
2.7 N JCT SR 302, Mason, WA
Built 1944 ADT: 12,482
NP RY
UnknownOver: STATE ROUTE 3
1.1 N JCT SR 300, Mason, WA
Built 1944 ADT: 18,809
PEDESTRIAN
UnknownOver: STATE ROUTE 106
6.6 E JCT US 101, Mason, WA
Built 1977 ADT: 1,300
W CLOQUALLUM RD
UnknownOver: US 101
4.5 S JCT SR 102, Mason, WA
Built 1972 ADT: 18,814
US 101
UnknownOver: SR 3
JCT US 101, Mason, WA
Built 1972 ADT: 7,545
C ST
UnknownOver: US 101
2.8 S JCT SR 102, Mason, WA
Built 1973 ADT: 17,635
US 101
UnknownOver: MATLOCK RD
3.4 S JCT SR 102, Mason, WA
Built 1973 ADT: 6,185
US 101
UnknownOver: SR 108
7.8 E GRAYS HBR CO, Mason, WA
Built 1986 ADT: 11,436
W. KNEELAND BLVD
UnknownOver: US 101
1.7 S JCT SR 102, Mason, WA
Built 1993 ADT: 13,896
GRAVEL CHUTE
UnknownOver: SR 3
4.0 N JCT US 101, Mason, WA
Built 2000 ADT: 10,584
GN RY
UnknownOver: US 97
6.1 N JCT SR 153, Okanogan, WA
Built 1939 ADT: 6,821
GN RY
UnknownOver: US ROUTE 97
0.2 N JCT SR 173, Okanogan, WA
Built 1948 ADT: 8,989
US 97
UnknownOver: SR 155
51.2 N DOUGLAS CO, Okanogan, WA
Built 1964 ADT: 4,683
CMSTPP RR
UnknownOver: STATE ROUTE 20
15.5 E JCT SR 31, Pend Oreille, WA
Built 1934 ADT: 886
PEDESTRIAN TRAIL
UnknownOver: STATE ROUTE 410
3.5 E JCT SR 123, Pierce, WA
Built 1938 ADT: 925
STEELE ST
UnknownOver: SR 512
0.6 E JCT I-5, Pierce, WA
Built 1975 ADT: 106,696
BNRR FT LEWIS SPUR
UnknownOver: I-5
1.7 N THURSTON CO, Pierce, WA
Built 1936 ADT: 61,110
BNRR PT DEFIANCE
UnknownOver: I-5
0.9 N THURSTON CO, Pierce, WA
Built 1936 ADT: 61,580
I-5
UnknownOver: 41ST DIVISION DR
6.1 N THURSTON CO, Pierce, WA
Built 1954 ADT: 10,765
I-5 SBCD
UnknownOver: 41ST DIVISION
6.1 N THURSTON CO, Pierce, WA
Built 1954 ADT: 10,765
STEILACOOM DUPONT
UnknownOver: I-5
4.1 N THURSTON CO, Pierce, WA
Built 1957 ADT: 117,595
E 11TH ST
UnknownOver: CITY WATERWAY CS2749
0.3 N JCT I-5, Pierce, WA
Built 1911 ADT: 40,311
Showing 751-800 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 |