Longest Bridges in Wyoming

The longest bridge in Wyoming spans 1829.1 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
I-180 Nbl over Uprr	Laramie	1829.1 ft	Poor	1982
I-180 Sbl over Uprr	Laramie	1820.9 ft	Fair	1984
East Entrance Road over Pelican Creek	Park	1482.9 ft	Good	2020
S 6th Street over Uprr	Carbon	1469.2 ft	Poor	1966
Wyo 530 Sbl over Uprr / I-80 Bus	Sweetwater	1172.6 ft	Poor	1978
Wyo 530 Nbl over Uprr / I-80 Bus	Sweetwater	1172.6 ft	Poor	1994
S Gurley Avenue over Bnsf / US 14/16	Campbell	982.0 ft	Fair	1982
Wyo 22 over Snake River	Teton	980.0 ft	Good	2023
Grand Loop Road over Gardner River	Park	961.9 ft	Fair	1939
I-25 Nbl And Sbl over Walsh Drive	Natrona	960.0 ft	Good	2022
US 89 over Snake River	Teton	779.9 ft	Fair	2013
Wyo 72 over Uprr / Front Street	Carbon	767.1 ft	Good	1976
Fr Cnty RD 298 over Wind River	Fremont	716.9 ft	Poor	1925
I-80 Bus over Uprr	Uinta	669.0 ft	Fair	1984
Wyo 376 over Uprr / Bitter Creek	Sweetwater	643.0 ft	Poor	1981
I-25 Nbl over North Platte River	Converse	636.2 ft	Fair	1972
I-25 Sbl over North Platte River	Converse	636.2 ft	Fair	1972
US 26 over Snake River	Teton	625.0 ft	Fair	2022
Northeast Entrance over Yellowstone River	Park	604.0 ft	Poor	1961
US 30 over Uprr / Twin Creek	Lincoln	598.4 ft	Fair	1970
US 14 over Shoshone River	Park	594.2 ft	Fair	1960
US 16 over Bnsf Railway	Big Horn	590.9 ft	Fair	2005
A Street over Uprr / S. Main Street	Sweetwater	568.9 ft	Good	2006
US 287 over Uprr	Albany	554.5 ft	Fair	2005
Wyo 59 over Bnsf Railway	Converse	542.0 ft	Fair	1988
US 89 over Snake River	Lincoln	541.0 ft	Fair	1957
East Entrance Road over Yellowstone River	Teton	532.2 ft	Fair	1936
I-25 Nbl over Elkhorn Creek	Platte	530.8 ft	Fair	1973
I-25 Sbl over Elkhorn Creek	Platte	530.8 ft	Fair	1973
I-90 Ebl over Powder River	Johnson	524.6 ft	Fair	1961
I-90 Wbl over Powder River	Johnson	524.6 ft	Fair	1961
US 14 over Powder River	Sheridan	521.0 ft	Fair	1990
Wyo 257 over North Platte River	Natrona	504.9 ft	Fair	2013
Wyo 338 over Bnsf / Goose Creek	Sheridan	503.0 ft	Fair	1987
Wyo 212 over Uprr / Campstool RD	Laramie	502.0 ft	Fair	1977
US 26 over Big Wind River	Fremont	501.6 ft	Fair	1959
US 14 over Big Horn River	Big Horn	500.0 ft	Fair	1987
US 14a over Shoshone River	Park	499.0 ft	Fair	1957
U.s. Route 89 over Christian Creek	Teton	499.0 ft	Fair	1963
Wyo 120 over Shoshone River	Park	496.1 ft	Fair	1991
Wyo 215 over Uprr / I-80 SR	Laramie	491.1 ft	Fair	1986
US 20/26/87 over I-25	Natrona	490.2 ft	Fair	1968
US 89 over Snake River	Teton	488.8 ft	Good	2019
Wyo 59 over North Platte River	Converse	480.0 ft	Good	1988
US 14a over Yellowtail Reservoir	Big Horn	472.1 ft	Fair	1971
I-25 Nbl over North Platte River	Converse	463.9 ft	Fair	1966
I-25 Sbl over North Platte River	Converse	463.9 ft	Good	1966
Wyo 530 Sbl over Green River	Sweetwater	458.7 ft	Poor	1982
US 30 over Uprr	Laramie	458.3 ft	Fair	1954
Wyo 530 Nbl over Green River	Sweetwater	457.0 ft	Fair	1953
Wyo 387 over Coal Draw	Natrona	450.1 ft	Fair	1977
I-25 Nbl And Sbl over North Platte River	Natrona	450.1 ft	Good	2024
W F Street over North Platte River	Natrona	450.1 ft	Good	2024
W Richards Street over North Platte River	Converse	445.9 ft	Poor	1984
Wyo 130 over North Platte River	Carbon	443.9 ft	Fair	1949
Teton Park Road over Snake River	Teton	443.9 ft	Fair	1956
IRR BIA Route 32 over Big Wind River	Fremont	439.6 ft	Good	2020
US 26 over Wind River	Fremont	436.7 ft	Fair	1983
US 14 over Bnsf Railroad	Sheridan	435.0 ft	Fair	2022
Co Cnty RD 27 over North Platte River	Converse	430.1 ft	Fair	2009
I25/us20-26-87 Bus over North Platte River	Converse	430.1 ft	Good	2009
Wyo 213 over Uprr / Childs Draw	Laramie	430.1 ft	Good	2012
Culbertson Avenue over Big Horn River	Washakie	425.9 ft	Poor	1934
Wyo 160 over North Platte River	Goshen	423.9 ft	Fair	1958
SW Cnty RD 6 over Green River	Sweetwater	423.9 ft	Good	1998
Wyo 157 over North Platte River	Goshen	421.9 ft	Fair	1987
US 85 over Cheyenne River	Niobrara	419.9 ft	Fair	1990
Northeast Entrance over Lamar River	Park	419.9 ft	Fair	2012
Pa Cnty RD L14b over Shoshone River	Park	419.9 ft	Good	2016
US 20/26 Conn. Wbl over Bnsf / Casper Creek	Natrona	418.0 ft	Fair	1961
US 20/26 Conn. Ebl over Bnsf / Casper Creek	Natrona	418.0 ft	Fair	1961
US 14 over N Fork Shoshone River	Park	417.0 ft	Good	2001
US 26 over North Platte River	Platte	416.7 ft	Fair	1983
I-80 Ebl over Uprr / Bear River	Uinta	414.0 ft	Fair	1967
I-80 Wbl over Uprr / Bear River	Uinta	414.0 ft	Fair	1967
I-80 Ebl over Uprr	Albany	410.1 ft	Fair	1999
I-80 Wbl over Uprr	Albany	410.1 ft	Fair	2001
Wyo 530 over Blacks Fork River	Sweetwater	408.1 ft	Good	1963
US 20 over Badwater Creek	Fremont	405.8 ft	Fair	1970
Beartooth Highway over Lake Creek	Park	405.5 ft	Fair	1974
Beartooth Highway over Beartooth Ravine	Park	403.5 ft	Good	2023
Wyo 319 over North Platte River	Converse	402.9 ft	Fair	1950
I-80 Ebl over Uprr / Wyo 76	Carbon	400.9 ft	Good	2001
Snowy Range Road over Uprr	Albany	400.6 ft	Good	2018
I-80 Wbl over Uprr / Wyo 76	Carbon	398.0 ft	Good	2000
Wyo 93 over North Platte River	Converse	396.0 ft	Good	1989
Wyo 258 (wyo Blvd) over North Platte River	Natrona	394.0 ft	Fair	1974
US 191 over Hoback River	Sublette	394.0 ft	Fair	1966
SH Cnty RD 269 over Powder River	Sheridan	393.0 ft	Fair	1989
Bh Cnty RD 72 over Shoshone River	Big Horn	390.1 ft	Poor	1926
Co Cnty RD 2 over North Platte River	Converse	390.1 ft	Fair	1996
US 85 over North Platte River	Goshen	390.1 ft	Fair	1994
Na Cnty RD 305 over North Platte River	Natrona	388.1 ft	Fair	2002
I-80 Ebl over Uprr / US 30	Laramie	387.1 ft	Fair	1963
I-80 Wbl over Uprr / US 30	Laramie	386.8 ft	Fair	1963
Wyo 51 over Bnsf Railway	Campbell	384.8 ft	Fair	2007
Wyo 132 over Wind River	Fremont	379.9 ft	Good	2007
US 30 over Uprr / Hams Fork River	Lincoln	371.1 ft	Fair	1955
I-90 Ebl over Bnsf / Higby Road	Sheridan	370.1 ft	Good	2018
I-90 Wbl over Bnsf / Higby Road	Sheridan	370.1 ft	Good	2017
US 14 over Machinery Pass	Campbell	368.1 ft	Good	2009
Wyo 192 over Powder River	Johnson	366.5 ft	Fair	1959
Wyo 296 over Sunlight Creek	Park	365.2 ft	Fair	1985
Wyo 120 over Clarks Fork River	Park	364.2 ft	Fair	1959
Wyo 220 over North Platte River	Natrona	359.9 ft	Fair	2002
Na Cnty RD 407 over North Platte River	Natrona	359.9 ft	Fair	2019
Wyo 319 over Bnsf Railway	Platte	359.9 ft	Good	2011
South Entrance Roa over Lewis River	Teton	357.0 ft	Good	2024
Wyo 156 over North Platte River	Goshen	356.0 ft	Fair	1985
I-25 Nbl over Uprr / US 30	Laramie	355.0 ft	Poor	1963
I-25 Sbl over Uprr / US 30	Laramie	355.0 ft	Poor	1963
Wyo 172 over Big Horn River	Hot Springs	352.0 ft	Fair	1959
U.s. Route 89 over Pilgrim Creek	Teton	352.0 ft	Fair	1961
SW Cnty RD 23s over Uprr	Sweetwater	350.1 ft	Fair	2003
I-80 Ebl over Uprr / Killpecker Creek	Sweetwater	350.1 ft	Fair	2004
I-80 Wbl over Uprr / Killpecker Creek	Sweetwater	350.1 ft	Fair	2005
Bh Cnty RD L42c over Big Horn River	Big Horn	348.1 ft	Fair	1958
Wyo 220 over Bnsf Railway	Natrona	345.1 ft	Fair	1969
US 26 over Buffalo Fork River	Teton	345.1 ft	Good	2007
La Cnty RD 220-1 over I-25	Laramie	343.5 ft	Fair	1970
N Fork Road over I-25	Johnson	341.9 ft	Fair	1971
Wyo 374 over Uprr	Sweetwater	341.5 ft	Fair	1946
Wyo 157 over North Platte River	Goshen	340.9 ft	Fair	1987
Wyo 220 over North Platte River	Natrona	340.9 ft	Fair	1969
Te Cnty RD 11 over Snake River	Teton	339.9 ft	Good	2024
Wyo 374 over Green River	Sweetwater	339.6 ft	Good	1952
Go Cnty RD 41b over North Platte River	Goshen	338.9 ft	Fair	1987
I-90 Ebl And Wbl over Bnsf / US 14/16	Campbell	336.9 ft	Poor	1972
US 14 over N Fork Shoshone River	Park	336.0 ft	Fair	1982
US 189 over Uprr	Lincoln	333.7 ft	Fair	1983
US 20 over North Platte River	Natrona	331.7 ft	Fair	1979
Wyo 72 over I-80	Carbon	329.1 ft	Fair	1968
US 14 over N Fork Shoshone River	Park	328.1 ft	Fair	1996
I-80 Ebl On Ramp over I-80	Sweetwater	328.1 ft	Fair	1992
Shepperson Road over I-25	Natrona	327.1 ft	Good	1980
Grand Loop Road over Ravine	Park	327.1 ft	Fair	1977
Wyo 28 over Green River	Sweetwater	326.4 ft	Poor	1985
US 30 over I-80	Laramie	325.1 ft	Fair	1976
I-80 Ebl over Green River	Sweetwater	325.1 ft	Good	1966
I-80 Wbl over Green River	Sweetwater	324.5 ft	Good	1966
Co Cnty RD 57 over North Platte River	Converse	324.1 ft	Fair	1983
Wyo 196 over Middle Fork Powder River	Johnson	324.1 ft	Good	1977
Wyo 256 over North Platte River	Natrona	319.9 ft	Fair	1971
Old Barnum Road over I-25	Johnson	317.9 ft	Fair	1971
Pl Cnty RD 245-1 over I-25	Platte	317.9 ft	Fair	1977
Wyo 253 over I-25	Natrona	315.9 ft	Fair	1968
I-25 Nbl over Chugwater Creek	Platte	315.0 ft	Good	1969
I-25 Sbl over Chugwater Creek	Platte	315.0 ft	Good	1969
US 20 over Big Horn River	Washakie	315.0 ft	Fair	1975
I-80 Bus over I-80	Carbon	313.0 ft	Fair	1994
US 20 over Big Horn River	Hot Springs	313.0 ft	Fair	1957
I-90 Ebl over Tongue River	Sheridan	312.7 ft	Fair	1960
I-90 Wbl over Tongue River	Sheridan	312.7 ft	Fair	1960
Wyo 789 over Little Snake River	Carbon	312.0 ft	Fair	1978
I-25 Nbl over Bnsf / Irvine Road	Converse	312.0 ft	Poor	1971
US 16 Bypass over Bnsf Railway	Weston	311.4 ft	Poor	1976
I-25 Sbl over Bnsf / Irvine Road	Converse	311.0 ft	Fair	1971
US 26 over Bnsf Railway	Platte	311.0 ft	Fair	1966
I-25 Service Road over South Fork Powder River	Johnson	308.7 ft	Fair	1932
I-80 Service Road over North Platte River	Carbon	304.8 ft	Poor	1930
Wyo 37 over Shoshone River	Big Horn	303.1 ft	Fair	1962
Go Cnty RD 3b over North Platte River	Goshen	303.1 ft	Fair	1997
US 14 over N Fork Shoshone River	Park	301.8 ft	Fair	1998
US 14 over Elk Fork Creek	Park	301.8 ft	Fair	1998
Co Cnty RD 21 over North Platte River	Converse	301.5 ft	Good	2013
I-80 Ebl over North Platte River	Carbon	300.9 ft	Fair	1963
I-80 Wbl over North Platte River	Carbon	300.9 ft	Fair	2002
US 16 over Big Horn River	Big Horn	299.9 ft	Fair	1978
Cl Cnty RD 17-38n over Bnsf Railway	Campbell	299.9 ft	Good	2019
Entrance Road over Belle Fourche River	Crook	299.9 ft	Fair	1980
US 85 Bypass over Bnsf Railway / US 26	Goshen	299.9 ft	Fair	2013
Pa Cnty RD 6kv over N Fork Shoshone River	Park	299.9 ft	Fair	1990
Na Cnty RD 308 over North Platte River	Natrona	298.9 ft	Fair	1997
Wyo 376 over Uprr	Sweetwater	298.9 ft	Fair	1977
Wyo 51 over Bnsf Railway	Campbell	296.9 ft	Fair	1980
Unnamed Road over I-25	Converse	294.9 ft	Fair	1966
Wyo 95 over Bnsf Railway	Converse	294.9 ft	Fair	1994
Pa Cnty RD 8ve over Clarks Fork River	Park	294.9 ft	Fair	2006
US 310 over Shoshone River	Big Horn	294.0 ft	Fair	1965
I-25 Service Road over I-25	Converse	294.0 ft	Fair	1971
Park Street over Big Horn River	Hot Springs	294.0 ft	Fair	1986
Wyo 319 over Elkhorn Creek	Platte	294.0 ft	Good	1958
We Cnty RD 1a over Beaver Creek	Weston	294.0 ft	Poor	1933
US 16 over Bnsf Railway	Big Horn	292.0 ft	Fair	1979
Wyo 173 over Big Horn River	Hot Springs	292.0 ft	Fair	1992
Wyo 59 over Bnsf Railway	Campbell	291.0 ft	Fair	1979
Wyo 789 over Wind River	Fremont	290.0 ft	Fair	1968
La Cnty RD 228-2 over I-25	Laramie	290.0 ft	Poor	1967
La Cnty RD 120-1 over I-25	Laramie	290.0 ft	Fair	1968
Co Cnty RD 22 over North Platte River	Converse	289.0 ft	Poor	1992
Logan Avenue over Uprr	Laramie	288.7 ft	Fair	2009
I-25 Service Road over Bnsf Railway	Platte	288.4 ft	Poor	1935
Co Cnty RD 37 over Bnsf Railway	Converse	288.1 ft	Good	1993
US 26 over Bnsf Railway	Platte	288.1 ft	Fair	1962
Wyo 130 over North Platte River	Carbon	285.1 ft	Good	2002
US 189 over Uprr	Lincoln	284.4 ft	Fair	1984
US 310 over Bnsf Railway	Big Horn	279.9 ft	Good	2019
Cl Cnty RD 94 over I-90	Campbell	279.9 ft	Fair	1974
S Burma AVE over I-90	Campbell	279.9 ft	Fair	2010
Wyo 59 over Antelope Creek	Converse	279.9 ft	Fair	1993