Bridges in Washington

8,516Total Bridges

4,339Good

3,704Fair

473Poor

Bridge Conditions in Washington

Washington has 8,516 bridges tracked in the National Bridge Inventory. Of these, 473 (5%) are rated as poor condition — meaning at least one major component has significant deterioration. The average bridge in Washington is 50 years old.

Washington Bridge Facts

Total Bridges	8,516
Good Condition	4,339
Fair Condition	3,704
Poor Condition	473
Average Bridge Age	50 years
Longest Bridge	11200.1 ft

Longest Bridges in Washington

US 101 over Columbia R11200.1 ftPoor SR 520 over Lake Washington7634.8 ftFair I-205 over SR 14 Bnrr7434.1 ftFair I-5 over Denny Way-lakeview V7077.1 ftFair US 2 over Ebey Island6922.9 ftFair

Counties in Washington

Adams187 bridges23 poor Asotin28 bridges Benton167 bridges11 poor Chelan148 bridges12 poor Clallam153 bridges8 poor Clark219 bridges10 poor Columbia86 bridges9 poor Cowlitz161 bridges6 poor Douglas40 bridges5 poor Ferry55 bridges6 poor Franklin133 bridges4 poor Garfield54 bridges4 poor Grant304 bridges9 poor Grays Harbor371 bridges31 poor Island7 bridges Jefferson97 bridges5 poor King1250 bridges50 poor Kitsap120 bridges1 poor Kittitas312 bridges35 poor Klickitat91 bridges6 poor Lewis420 bridges17 poor Lincoln180 bridges11 poor Mason136 bridges4 poor Okanogan161 bridges12 poor Pacific120 bridges9 poor Pend Oreille71 bridges11 poor Pierce480 bridges22 poor San Juan13 bridges Skagit256 bridges6 poor Skamania120 bridges11 poor Snohomish500 bridges20 poor Spokane309 bridges21 poor Stevens75 bridges9 poor Thurston199 bridges2 poor Wahkiakum37 bridges1 poor Walla Walla195 bridges18 poor Whatcom355 bridges20 poor Whitman349 bridges13 poor Yakima557 bridges31 poor

Poor Condition Bridges in Washington

Bridge	County	Length	Traffic	Year
I-5 over Lucile ST	King	171.9 ft	96,847	1966
I-90 over Mercer Sl	King	2669.0 ft	74,410	1970
I-90 over Mercer Slough	King	2812.0 ft	74,410	1940
I-90 over Lake Washington	King	6561.0 ft	68,544	1940
W.b. & Rev I-90 over Lake Washington	King	5736.9 ft	68,544	1989
SR 285 over S Wenatchee AVE	Chelan	129.9 ft	48,107	1973
I-5 over E Fork Lewis River	Clark	852.0 ft	41,939	1939
I-5 over Lewis River	Clark	1310.0 ft	41,939	1940
S Boeing Access RD over Airport Way Bar Ramp	King	182.1 ft	40,000	1952
Eastlake AVE NE over Portage Bay Pl E	King	201.1 ft	36,000	1930
Eastlake AVE NE over Portage Bay	King	291.0 ft	35,000	1915
I-5 over Log Dump RD & Bn Ry	Cowlitz	674.9 ft	33,912	1972
I-90 over Game Crossing	King	80.1 ft	33,803	1976
15th ST Northwest over Uprr	King	228.0 ft	31,879	1972
I-90 over Raging River	King	369.1 ft	31,252	1975
SR 99 (54th AVE E) over I-5 Ramps	Pierce	320.9 ft	29,145	1961
SR 167 over Bnsf Rr	Pierce	211.0 ft	28,316	1934
4th AVE S over Argo Rr Yard	King	1741.1 ft	28,000	1933
Gravelly Lake DR over Bnrr (np)	Pierce	26.9 ft	27,805	1959
4th AVE S over Parking Garage	King	1178.1 ft	27,000	1910
US 101 over Chehalis River	Grays Harbor	2638.1 ft	26,216	1955
I-82 over Np Ry Moxee	Yakima	212.9 ft	25,406	1961
W Meeker Street over Green River	King	245.1 ft	25,000	1958
SR 302 over Henderson Bay	Pierce	549.9 ft	23,753	1936
US 101 over Columbia R	Pacific	11200.1 ft	23,300	1966
I-5 over Cowlitz River	Lewis	759.8 ft	21,828	1953
Sullivan RD over SR 290 (trent Ave)	Spokane	80.1 ft	21,500	1960
US 12 over Wynoochee River	Grays Harbor	286.1 ft	21,466	1935
US 12 over Rr & N Gordon RD	Yakima	410.1 ft	21,317	1971
US 12 over Rr & N Gordon RD	Yakima	392.1 ft	21,317	1971
I-5 over Lacamas CR Drews Pr RD	Lewis	216.9 ft	21,041	1953
Thor ST over I-90	Spokane	111.9 ft	19,798	1957
Portland AVE over Puyallup AVE Nprr	Pierce	960.0 ft	19,549	1973
Alderwood Mall Blv over SR 524/196th ST SW	Snohomish	356.0 ft	19,198	1999
I-90 EB over Humpback Creek	King	24.0 ft	18,894	1972
I-90 over S Fk Snoqualmie R	King	140.1 ft	18,876	1974
I-90 over Bandera RD	King	111.9 ft	18,753	1972
I-90 over Bandera RD	King	124.0 ft	18,753	1972
US 101 over Matlock RD	Mason	207.0 ft	18,182	1973
SR 104 Westhalf over Hood Canal	Jefferson	3750.0 ft	18,159	1982
SR 104 East Half over Hood Canal	Kitsap	2669.9 ft	18,159	2009
I-90 over Coal Creek	Kittitas	57.1 ft	18,069	1956
W Garfield ST over Marina Pl Rr Ravine	King	3007.9 ft	18,000	1929
Greene Street over Spokane River Local Rds	Spokane	434.1 ft	17,869	1955
I-90 over SR 906	Kittitas	182.1 ft	17,758	1969
I-90 over SR 906 W-w Ramp	King	206.0 ft	17,601	1969
I-90 WB over So Fk Snoqulmie R	King	394.0 ft	17,601	1971
I-90 over Yellowstone RD	Kittitas	194.9 ft	17,215	1969
I-90 over Kachess River	Kittitas	149.9 ft	17,108	1958
I-90 over Yakima River	Kittitas	316.9 ft	16,667	1959
I-90 over Yakima River	Kittitas	316.9 ft	16,667	1959
SR 529 over Steamboat Slough	Snohomish	853.0 ft	16,592	1927
SR 529 over Union Sl	Snohomish	581.0 ft	16,439	1927
SR 529 over Union Sl	Snohomish	632.9 ft	16,439	1954
SR 529 over Snohomish River	Snohomish	2680.1 ft	16,286	1927
SR 529 over Snohomish River	Snohomish	2464.9 ft	16,286	1954
US 12 over Wishkah River	Grays Harbor	362.9 ft	16,009	1925
I-90 over Dry Creek	Kittitas	390.1 ft	15,974	1967
I-90 over Dry Creek	Kittitas	390.1 ft	15,974	1967
I-90 over Umptanum RD	Kittitas	162.1 ft	15,658	1967
I-90 over Wilson Creek	Kittitas	118.1 ft	15,658	1967
Fish War Mem X-ing over Railroad	Pierce	117.1 ft	15,256	1925
Fish War Mem X-ing over Puyallup River	Pierce	764.1 ft	15,255	1925
SR 203 over Skykomish River	Snohomish	582.0 ft	15,153	1957
Klickitat DR over I-5	King	189.0 ft	15,000	1964
Sunset Boulevard over Latah Creek	Spokane	1069.9 ft	14,995	1913
US 12 / Heron ST over Wishkah River	Grays Harbor	234.9 ft	14,965	1949
I-90 over Taneum CR	Kittitas	107.9 ft	14,959	1965
I-90 over West Side Canal	Kittitas	38.1 ft	14,959	1966
I-90 over Lower Peoh Pt RD & Trail	Kittitas	375.0 ft	14,717	1965
I-90 over Lower Peoh Pt RD & Trail	Kittitas	375.0 ft	14,717	1965
I-90 over Highline Canal	Kittitas	179.1 ft	14,717	1965
I-90 over S Cle Elum RD & Bnsf Rr	Kittitas	424.9 ft	14,587	1966
Capitol BLVD over I-5 Ramp	Thurston	283.1 ft	13,767	1956
2 AVE Exten S over Railroad	King	208.0 ft	13,700	1928
US 101 over Hoquiam River	Grays Harbor	464.9 ft	13,233	1970
Chamber Way over Bn Rr & N Natl AVE	Lewis	376.0 ft	13,223	1952
US 2 over Columbia River	Chelan	1399.9 ft	12,899	1975
US 101 over Hoquiam River	Grays Harbor	1980.0 ft	12,765	1928
Washington Street over Cid Canal	Benton	29.9 ft	12,416	1971
I-82 over Bn Ry	Benton	480.0 ft	12,139	1973
SR 203 over Drainage Overflow	Snohomish	88.9 ft	12,132	1954
So 24th Avenue over Wide Hollow Creek	Yakima	25.9 ft	12,000	1970
Steilacoom Dupont over I-5	Pierce	110.9 ft	11,876	1957
SR 9 over Skagit River	Skagit	972.1 ft	11,660	1959
SR 12 over Satsop River	Grays Harbor	410.1 ft	11,589	1965
I-90 over Medical Lake RD	Spokane	129.9 ft	11,409	1966
SR 24 over Yakima River	Yakima	1565.0 ft	11,237	2006
I-82 over Chandler Canal	Benton	120.1 ft	11,211	1977
I-82 over Yakima River	Benton	490.2 ft	11,211	1977
I-82 over Yakima River	Benton	490.2 ft	11,211	1977
SR 500 over Lacamas Lake	Clark	79.1 ft	11,155	1930
I-90 over Bnsf Railroad	Adams	309.1 ft	10,667	1968
I-90 over Bnsf Railroad	Adams	319.6 ft	10,667	1968
I-90 over Doerschlag RD	Lincoln	85.0 ft	10,667	1968
SR 203 over Cherry Creek	King	101.0 ft	10,445	1946
US 101 over S Fk Willapa River	Pacific	600.1 ft	10,253	1966
SR 544 over Nooksack R Overflow	Whatcom	38.1 ft	10,205	1994
I-82 over Selah Creek	Yakima	1336.9 ft	10,035	1969
I-82 over Burbank Creek	Kittitas	408.1 ft	10,035	1970