Longest Bridges in Washington

The longest bridge in Washington spans 11200.1 feet. The table below ranks the state's bridges by total structure length — from major river crossings and causeway spans to long highway overpasses.

How this ranking works

Length comes from the NBI structure length field and is shown in feet. It is best read as a scale and maintenance-complexity signal, not by itself as a safety signal.

Bridge	County	Length	Condition	Year Built
US 101 over Columbia R	Pacific	11200.1 ft	Poor	1966
SR 520 over Lake Washington	King	7634.8 ft	Fair	2016
I-205 over SR 14 Bnrr	Clark	7434.1 ft	Fair	1982
I-5 over Denny Way-lakeview V	King	7077.1 ft	Fair	1962
US 2 over Ebey Island	Snohomish	6922.9 ft	Fair	1968
US 2 over Ebey Slough	Snohomish	6794.9 ft	Fair	1993
US 101 over Columbia R	Pacific	6650.9 ft	Fair	1966
I-5 SB over Terrain	King	6584.0 ft	Fair	1967
I-90 over Lake Washington	King	6561.0 ft	Poor	1940
SR 520 over Lake Washington	King	6127.0 ft	Good	2023
NB SR 16 over Tacoma Narrows	Pierce	5978.0 ft	Fair	1949
SR 520 over Lake Washington	King	5967.8 ft	Good	2017
I-5 NB over Terrain	King	5762.1 ft	Fair	1966
W.b. & Rev I-90 over Lake Washington	King	5736.9 ft	Poor	1989
SB SR 16 over Tacoma Narrows	Pierce	5569.9 ft	Good	2007
SR 433 over Columbia R @ Longview	Cowlitz	5478.0 ft	Fair	1929
I-5 NB over James Cherry Revers	King	4724.1 ft	Fair	1964
I-5 over Lake Wash Ship Canal	King	4429.1 ft	Fair	1962
E Marina Way over Columbia River	Klickitat	4418.0 ft	Fair	1924
SR 104 Westhalf over Hood Canal	Jefferson	3750.0 ft	Poor	1982
US 101 over Columbia R Megler	Pacific	3676.8 ft	Fair	1966
I-90 over Denny Creek	King	3620.1 ft	Fair	1981
SR 509 over River Rr Portland AVE	Pierce	3584.0 ft	Good	1996
SR 20 over Swinomish Channel	Skagit	3544.9 ft	Good	1981
I-5 over Columbia River	Clark	3538.1 ft	Fair	1916
I-5 over Columbia River	Clark	3538.1 ft	Fair	1958
I-82 over Columbia River	Benton	3433.1 ft	Fair	1988
S Spokane ST over E Marginal Wy 1st 4th	King	3410.1 ft	Fair	1941
I-82 over Columbia River	Benton	3379.9 ft	Fair	1955
I-705 SB S-s Ramp over I-705 SB Ramp Streets+	Pierce	3363.8 ft	Good	1988
US 197 over Columbia R Sp & S Ry	Klickitat	3345.1 ft	Fair	1954
Spokane ST Viaduct over E Marginal Wy 1st 4th	King	3332.0 ft	Good	2012
SR 20 over Swinomish Chan	Skagit	3258.9 ft	Fair	1972
Fauntleroy Way over Admiral Way Avalon Way	King	3123.0 ft	Fair	1963
SR 99 over Duwamish River	King	3009.8 ft	Fair	1956
W Garfield ST over Marina Pl Rr Ravine	King	3007.9 ft	Poor	1929
I-90 Ramp over Mercer Slough I-90	King	2996.1 ft	Good	1995
US 2 over Snohomish River	Snohomish	2980.0 ft	Fair	1968
SR 99 over Lake Union	King	2955.1 ft	Fair	1931
SR 99 over Duwamish River	King	2895.0 ft	Fair	1996
I-90 over City Streets	Spokane	2890.1 ft	Fair	1967
Spokane ST WB Lane over I-5	King	2884.8 ft	Fair	1967
SR 520 over Portage Bay	King	2840.9 ft	Fair	1963
I-90 over Mercer Slough	King	2812.0 ft	Poor	1940
SR 99 over Spokane ST	King	2792.0 ft	Fair	1959
I-90 over Viaduct Sta 1396 US 2	Spokane	2765.1 ft	Fair	1967
SR 529 over Snohomish River	Snohomish	2680.1 ft	Poor	1927
SR 104 East Half over Hood Canal	Kitsap	2669.9 ft	Poor	2009
I-90 over Mercer Sl	King	2669.0 ft	Poor	1970
US 101 over Chehalis River	Grays Harbor	2638.1 ft	Poor	1955
SR 409 over Columbia R Puget Island	Wahkiakum	2615.2 ft	Fair	1938
I-705 NB over I-705 NB Ramp Streets+	Pierce	2587.9 ft	Fair	1988
US 97 over Columbia River	Klickitat	2566.9 ft	Fair	1962
1st AVE S over Argo Rr Yard	King	2544.0 ft	Fair	1935
US 395 over Columbia R-riverside DR	Benton	2521.0 ft	Fair	1954
I-90 over Columbia River Vantage	Kittitas	2503.9 ft	Fair	1962
SR 397 over Columbia River	Benton	2503.0 ft	Fair	1978
SR 529 over Snohomish River	Snohomish	2464.9 ft	Poor	1954
SR 18 W-s Ramp over I-5 & SR 18	King	2407.2 ft	Fair	2012
US 2 over Snohomish R Highland AVE	Snohomish	2369.1 ft	Fair	2001
SW Spokane ST over E Marginal Way S	King	2357.0 ft	Fair	1983
SR 504 over Hoffstadt Creek	Cowlitz	2339.9 ft	Fair	1991
SR 522 over Sammamish River	King	2335.0 ft	Fair	1968
Fifth AVE (usk) over Pend Oreille River	Pend Oreille	2282.2 ft	Poor	1964
I-90 over East Channel-lk Wash	King	2224.1 ft	Fair	1981
I-90 over East Channel-lk Wash	King	2224.1 ft	Fair	1988
SB I-5 To NB SR 16 over S Tacoma Way/strr/center	Pierce	2140.1 ft	Good	2011
US 2 over Ebey Slough And SR 204	Snohomish	2081.0 ft	Fair	1968
I-5 over Sr529 Rr Ebey Sl 60th Pl	Snohomish	2062.0 ft	Fair	1969
SR 261 over Snake River	Columbia	2040.0 ft	Poor	1927
US 12 over SR 107 Rr Flood Plain	Grays Harbor	2007.9 ft	Fair	1969
15th AVE W over Ship Canal Rr	King	1998.0 ft	Fair	1940
US 12 over SR 107 Rr Flood Plain	Grays Harbor	1991.1 ft	Poor	1969
SR 24 over Columbia River	Benton	1982.0 ft	Poor	1965
US 101 over Hoquiam River	Grays Harbor	1980.0 ft	Poor	1928
Fox Islnd Br RD NW over Hale Passage	Pierce	1951.1 ft	Poor	1954
I-182 over Columbia R City Streets	Benton	1950.1 ft	Fair	1984
I-182 over Columbia River	Benton	1950.1 ft	Fair	1984
US 101 over Naselle River	Pacific	1938.0 ft	Fair	1985
I-90 S-e Ramp over I-90 Mercer Slough	King	1929.1 ft	Fair	1970
I-5 over Ebey Sl / SR 529 / Rr	Snohomish	1919.9 ft	Fair	1954
I-705 over 15th ST & Bnrr Prairie L	Pierce	1910.1 ft	Good	1986
I-5 over Exp Galer-lakeview V	King	1907.8 ft	Fair	1961
I-90 over I-5	King	1880.9 ft	Fair	1966
I-90 over Mercer Slough	King	1871.1 ft	Fair	1970
Fleshman Way over Snake River	Asotin	1866.1 ft	Fair	1982
SR 167 Flyover over I-405 NB SR 167 NB	King	1846.1 ft	Good	2018
SR 127 over Snake R Central Ferry	Garfield	1831.0 ft	Fair	1969
Spokane ST EB Lane over I-5	King	1793.0 ft	Fair	1966
US 12 over Snake R. & Bn Ry	Franklin	1779.9 ft	Fair	1986
SR 522 over Snohomish R & Tester RD	Snohomish	1779.9 ft	Good	2013
US 12 over Snake River & Bnrr	Franklin	1770.0 ft	Fair	1950
N-w Ramp P1 18853 over I-5 SR 527 Broadway Av	Snohomish	1765.1 ft	Fair	1970
E 11th ST over City Waterway Cs2749	Pierce	1748.0 ft	Fair	1911
Ramp over I-90 Ramps City Street	King	1742.1 ft	Good	1973
4th AVE S over Argo Rr Yard	King	1741.1 ft	Poor	1933
SR 432 over Cowlitz River & Bnsf	Cowlitz	1729.0 ft	Fair	1973
I-90 over Mercer Slough	King	1723.1 ft	Fair	1970
Maple Street over Spokane River	Spokane	1718.8 ft	Fair	1958
SR 303 over Port Washington Narrows	Kitsap	1716.9 ft	Fair	1958
SR 4 over Cowlitz R / Rr / SR 411	Cowlitz	1710.0 ft	Fair	1951
NB I5 Off Ramp over W-s I5 EB W Sea Frwy	King	1708.0 ft	Fair	1967
I-90 over I-5	King	1685.0 ft	Fair	1966
SR 522 over Snohomish R & Tester RD	Snohomish	1680.1 ft	Fair	1963
SR 432 over Cowlitz R & Np Ry	Cowlitz	1675.9 ft	Fair	1961
I-5 over Galer-lakeview V	King	1670.9 ft	Fair	1961
W-s Ramp over I-5 Mainline And Ramps	King	1664.0 ft	Fair	1967
SW Spokane ST over Delridge Way SW	King	1649.0 ft	Fair	1983
SR 173 over Columbia R	Douglas	1632.9 ft	Fair	1970
I-5 over Snohomish River Rr	Snohomish	1623.0 ft	Fair	1968
I-5 over Snohomish R Gn Ry	Snohomish	1623.0 ft	Fair	1968
SR 16 over S Tacoma Way/strr/center	Pierce	1608.9 ft	Good	2011
I-5 over Puyallup River/rr/sr 167	Pierce	1579.1 ft	Good	2021
I-5 over Puyallup R/rr/sr 167	Pierce	1569.9 ft	Good	2017
SR 24 over Yakima River	Yakima	1565.0 ft	Poor	2006
SR 512 over Puyallup R & City Sts	Pierce	1558.1 ft	Fair	1971
SR 512 over Puyallup R & City Sts	Pierce	1555.1 ft	Fair	1975
City Street over Port Wash Narrows	Kitsap	1549.9 ft	Good	2011
SR 25 over Columbia River	Stevens	1540.4 ft	Poor	1948
SW Spokane ST over Delridge Way SW	King	1521.0 ft	Fair	1983
W.b. I-90 over Lake Washington	King	1472.1 ft	Fair	1989
SR 109 Spur over Little Hoquiam River	Grays Harbor	1470.1 ft	Fair	1985
I-405 N-w Ramp over Sammamish R I-405 SR 5	King	1469.2 ft	Fair	1968
Harstine Bridge RD over Pickering Passage	Mason	1465.9 ft	Fair	1969
US 101 N-w Ramp over US 101	Grays Harbor	1456.0 ft	Good	1985
I-705 over Chehalis Western Rr	Pierce	1451.1 ft	Good	1988
SR 128 over Snake River	Asotin	1450.1 ft	Fair	1979
SR 18 E-n Ramp over I-5 SR 18 Ramps	King	1449.1 ft	Fair	2012
E-e Ramp over N-e Ramp From Front ST	King	1443.9 ft	Good	2003
SR 16 over S Tacoma Way/strr/center	Pierce	1424.9 ft	Good	2013
US 12 over Snake River	Asotin	1423.9 ft	Fair	1939
I-5 SB Off Ramp over S-e Ramp To Columbia Way	King	1421.9 ft	Fair	1967
I-405 over SR 522 Sammamish R	King	1410.1 ft	Fair	1968
US 2 over Columbia River	Chelan	1399.9 ft	Poor	1975
SR 4 over Deep River	Wahkiakum	1388.1 ft	Good	1990
US 101 over Niawiakum River	Pacific	1375.0 ft	Fair	1991
I-5 over Ravenna BLVD	King	1372.0 ft	Fair	1961
WB I-90 over Lake Washington	King	1369.1 ft	Fair	1989
SR 290 over Rr Spokane River City ST	Spokane	1367.1 ft	Fair	1984
Overpass To T-5 over W. Marginal Wy S.w.	King	1362.9 ft	Fair	1997
I-405 over SR 522 Sammamish R	King	1352.0 ft	Fair	1968
I-5 Rev Exp Lanes over Ravenna BLVD	King	1349.1 ft	Fair	1961
SR 3 NB over SR 16	Kitsap	1347.1 ft	Good	1988
SW Spokane ST over Duwamish River W Waterwy	King	1339.9 ft	Fair	1983
I-82 over Selah Creek	Yakima	1336.9 ft	Poor	1969
I-82 over Selah Creek	Yakima	1336.9 ft	Fair	1969
E-e Ramp over I-90 Ramps Mercer Sl	King	1333.0 ft	Good	1993
I-90 W-n Ramp over I-90 Wbcd	King	1331.0 ft	Fair	1969
I-5 over Ravenna BLVD	King	1325.1 ft	Fair	1961
N-n Ramp over I-5	Snohomish	1323.2 ft	Good	2006
US 2 over Ebey Slough Drainage	Snohomish	1317.9 ft	Fair	1993
US 97 over Ahtanum Crk Rr&n-n Ramp	Yakima	1315.0 ft	Poor	1981
I-5 over Lewis River	Clark	1310.0 ft	Poor	1940
SR 107 over Chehalis River	Grays Harbor	1310.0 ft	Fair	1958
SR 105 over South Bay	Grays Harbor	1309.1 ft	Fair	1955
N-w Ramp over I-5	King	1282.2 ft	Good	1966
I-405 NB To I-5 SB over Ramps And Swamp Creek	Snohomish	1270.0 ft	Fair	1981
US 395 over Columbia R Kettle Falls	Stevens	1267.1 ft	Fair	1941
S 196th ST over Uprr 77th AVE S Bnsfrr	King	1249.0 ft	Fair	2000
I-705 N-w Ramp over 15th St-plrr I-705	Pierce	1246.4 ft	Good	1987
I-90 W-s Ramp over I-5	King	1245.1 ft	Good	1965
I-705 over 15th ST Vacated Rr	Pierce	1245.1 ft	Good	1987
Union Avenue South over Nprr &south Tacoma Way	Pierce	1234.9 ft	Fair	1971
NE 139th ST over I-5 / I-205	Clark	1232.9 ft	Good	2014
SR 305 over Agate Passage	Kitsap	1229.0 ft	Fair	1950
US 97 over Columbia River	Douglas	1227.0 ft	Poor	1962
I-90 over City Streets	King	1222.1 ft	Good	1991
I-90 over Hangman Creek	Spokane	1222.1 ft	Fair	1963
I-90 over Hangman Creek	Spokane	1222.1 ft	Fair	1963
Lakeview BLVD over I-5	King	1214.9 ft	Good	1963
SR 285 over Columbia R Gn Ry	Douglas	1208.0 ft	Fair	1950
I-5 over E-s Ramp Br	King	1206.0 ft	Fair	1967
I-90 over Avalanche Relief	Kittitas	1206.0 ft	Good	2016
I-90 over Avalanche Relief	Kittitas	1206.0 ft	Good	2016
US 97 over Ahtanum Crk Rr & Roads	Yakima	1206.0 ft	Fair	1981
Grady Way over Uprr & Bnrr	King	1205.1 ft	Fair	1986
Woodinville-duvall over Snoqualmie River	King	1182.1 ft	Fair	1951
4th AVE S over Railroad Station	King	1178.1 ft	Fair	1910
4th AVE S over Parking Garage	King	1178.1 ft	Poor	1910
SR 509 Ramp over Railroad	Pierce	1169.9 ft	Good	1996
I-90 W-n Ramp over 4th AVE And Sound Trans	King	1154.9 ft	Good	2010
Lincoln AVE over E Marc ST Milwaukee Way	Pierce	1154.9 ft	Good	2011
SR 18 over Npry & City Streets	King	1150.9 ft	Fair	1956
SR 17 over Columbia River	Douglas	1149.9 ft	Fair	1950
SR 504 over N Fk Toutle River	Cowlitz	1140.1 ft	Good	1989
I-90 EB over Bus Depot Ped Path Bldns	King	1140.1 ft	Fair	2003
US 12 over Cowlitz R	Lewis	1136.2 ft	Fair	1968
Allen Street over Cowlitz R Bnrr City ST	Cowlitz	1115.2 ft	Fair	2000
E-n Ramp over City Street Nprr	King	1113.8 ft	Fair	1959
SR 122 over Tilton River	Lewis	1113.8 ft	Good	1961
E-n Ramp SR 520 over I-405 & SR 520	King	1111.9 ft	Good	1993
I-5 over Skagit River	Skagit	1111.9 ft	Fair	1955
SR 9 over Snohomish River	Snohomish	1110.9 ft	Fair	1959
US 12 over Sylvia CR Np Ry	Grays Harbor	1106.0 ft	Fair	1968
Fas 1198 over Bnrr Ward Street	Lewis	1101.0 ft	Good	1980
Wishkah Road over Wishkah River	Grays Harbor	1100.1 ft	Good	1994
Donald Wapato Rd. over Yakima River	Yakima	1100.1 ft	Good	2004
148th St-w Ramp over I-90 Wbcd Ramp	King	1095.1 ft	Good	1973
US 12 over Sylvia CR Np Ry	Grays Harbor	1094.2 ft	Fair	1968
SR 155 over Columbia River	Douglas	1088.9 ft	Fair	1935