Longest Bridges in Colorado

The longest bridge in Colorado spans 7169.0 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 70 Ml Wbnd over Hillside	Garfield	7169.0 ft	Fair	1993
US 40 Ml over I25 Rdwy Rr S Platte Rvr	Denver	4382.9 ft	Fair	1984
20th ST Hov over Roads \| River \| Rr	Denver	3522.0 ft	Fair	1994
I 70 Ml Wbnd over French Creek	Garfield	3133.5 ft	Good	1989
8th Avenue over Bnsf Rr \| Navajo ST \| Os	Denver	2370.1 ft	Fair	1985
I 70 Ml Ebnd over I 25 Ml & Ramps	Denver	2294.6 ft	Fair	1991
I 70 Ml Wbnd over I 25 Ml And Ramps	Denver	2294.6 ft	Fair	1991
270sb _76eb Rmp Y over I76 Rmps Sh224 Clr.crk.	Adams	2281.5 ft	Good	2010
SH 58 Ramp over I70ml/ Sh58 Ml/clr Crk	Jefferson	2115.2 ft	Good	2008
I 25 Ml Sbnd over Sh12 Rr City ST Ditch	Las Animas	2057.7 ft	Fair	2010
I 25 Ml Nbnd over Sh12 Rr Cty Sts. Ditch	Las Animas	1985.2 ft	Fair	2009
I 225 Ml Sbnd over I 70 Ml	Adams	1966.9 ft	Fair	1994
Rmp I70eb To I25nb over I 25 Ml I 70 Ml Ramps R	Denver	1932.4 ft	Fair	1992
Park Avenue West over Bnsf Rr \| Rtd \| Plte Rvr	Denver	1884.8 ft	Fair	1994
I70 Ml Ebnd over Bnsf\|city Street\|ltrail	Denver	1875.7 ft	Fair	2003
I70 Ml Wbnd over City Streets\|rr\|lr	Denver	1875.3 ft	Good	2003
85 NB Rmp To I25 N over I25ml US 85ml Rmps	Denver	1753.9 ft	Good	2013
Sbus85toebc470rmp over Us85/c470ml/uprr/bnsf	Arapahoe	1728.7 ft	Good	2011
I25 Ml over Brdwy Bnsf Uprr Rtd Lr	Denver	1637.1 ft	Fair	2002
Ramp To Park AVE over I 25 Ml Ramps R	Denver	1624.3 ft	Fair	1998
E-470 Ramp H over I-70 Colfax E470 Ml	Arapahoe	1616.1 ft	Fair	2007
US 50 Ml over Gunnison/blue Mesa Res	Gunnison	1530.2 ft	Fair	1963
US 40 Ramp over I25 Ml Us40 Ml Plte Rvr	Denver	1524.9 ft	Fair	1987
I 70 Ebnd over Colorado River	Garfield	1515.4 ft	Fair	1992
US 6 Ml over City Streets Up Rr	Logan	1508.9 ft	Fair	1972
I 70 Ml Ebnd over Access RD Colorado Rvr	Garfield	1499.0 ft	Fair	1987
I 70 Wbnd over Accs Rd\|rst Area\|co Rivr	Garfield	1463.3 ft	Fair	1989
US 24 Bypass over I 25 Ml Fountain Crk	El Paso	1448.5 ft	Fair	1990
SH 109 Ml over Rdwy Rr Arkansas Rvr	Otero	1448.2 ft	Fair	1967
NB 225 Ramp over I25 Ml	Denver	1437.7 ft	Fair	2005
EB 6th Avenue over Seminole ST \| Mariposa S	Denver	1430.1 ft	Fair	1965
I 270 Ebnd Ml over I25nb/i25hov/wb I 270	Adams	1424.9 ft	Fair	2009
Ramp To I 25 Nbnd over US 6 Ml	Denver	1378.3 ft	Poor	1989
Ramp H over I-25 And Nwp	Broomfield	1359.6 ft	Good	2003
WB 6th AVE over Bnf Rr \| Rtd \| Mariposa	Denver	1344.8 ft	Fair	1958
SH 83 Ramp To I225 over I225 Sh83 Ramp	Arapahoe	1342.5 ft	Fair	2002
I 70 Ml Wbnd over Hillside	Garfield	1319.9 ft	Fair	1989
I 70 Ebnd over Up Rr Colorado River	Garfield	1307.7 ft	Fair	1991
NB E470 To Sbi25 over I25 E470 Ml Ramps	Adams	1262.5 ft	Good	2003
I25 EB Ramp A PKWY over Steets Ramps Rtd &	Denver	1252.3 ft	Fair	1988
I 225 NB Ramp over I 70 Ml	Denver	1235.2 ft	Fair	1997
SH 67 Ml over Arequa Gulch	Teller	1224.4 ft	Good	2001
I 70 Ml Ebnd over Bair Ranch RD Draw	Garfield	1206.4 ft	Fair	1985
25 SB Ramp To E470 over I 25 SH 470 Ml Ramps R	Douglas	1195.9 ft	Fair	1991
I 25 Sbnd Ramp over I 25 Ml	Denver	1193.9 ft	Good	1989
County Road 24 over Arkansas River	Bent	1191.6 ft	Poor	1948
SH 96 WB over Rdwy Rr Arkansas Rvr	Pueblo	1150.9 ft	Good	2011
48th AVE over Rr Yard/access Road	Denver	1143.0 ft	Fair	1978
I 70 Ml Wbnd over Bair Ranch RD Draw	Garfield	1131.2 ft	Fair	1985
I 70 Ml over US 6 Ml Uprr Colo River	Mesa	1127.3 ft	Fair	1962
I 70 Ml Wbnd over US 6 Rr Eagle River	Eagle	1126.0 ft	Poor	1971
I 70 Ml Ebnd over US 6 Rr Eagle River	Eagle	1126.0 ft	Fair	1971
SH 96 Ebnd over City ST Rr Ark. Rvr	Pueblo	1123.0 ft	Good	2010
Ramp To Shoshone over I 70 Colorado River R	Garfield	1116.1 ft	Fair	1987
SH 71 Ml over South Platte River	Morgan	1111.9 ft	Good	1995
Pecos St. over Bnsf Mainlin /w 59th AVE	Adams	1108.6 ft	Fair	2012
US 50 Ml over Arkansas River	Prowers	1084.3 ft	Fair	1975
SH 59 Ml over South Platte River	Sedgwick	1056.1 ft	Fair	1987
SH 2 Ml Sbnd over US 6 Ml	Adams	1046.6 ft	Good	2005
8th Street over I25 Drgwrr Fountain Crk	Pueblo	1033.8 ft	Fair	1928
Crystal Valley Par over Private Drive \| East Plu	Douglas	1016.7 ft	Good	2008
I 70 Ml Wbnd over Colorado River	Mesa	1001.3 ft	Fair	1985
I 70 Ml Ebnd over Colorado River	Mesa	998.0 ft	Fair	1985
US 50 Ml over Lake Fk Gunnsion River	Gunnison	993.1 ft	Fair	1963
I 70 Ml Ebnd over Colorado River	Mesa	991.1 ft	Fair	1985
120th Ave. over I76 Ml/bnsf/canal/ac RD	Adams	990.5 ft	Fair	2002
I 70 Ml Wbnd over Colorado River	Mesa	988.8 ft	Fair	1985
SH 82 Ml over I 70 Ml Colorado River	Garfield	981.3 ft	Good	2017
SH 52 Ml over South Platte River	Morgan	972.4 ft	Fair	1963
I 70 Ml Ebnd over Ramp Rr Colorado Rvr	Garfield	963.3 ft	Good	1992
US 24 Ml Ebnd over Circle DR Spring Creek	El Paso	960.6 ft	Good	1993
US 85 Ml Sbnd over South Platte River	Weld	952.1 ft	Poor	1955
US 85 Ml Nbnd over South Platte River	Weld	952.1 ft	Fair	1936
I25 Ml over Chey Crk/nv Ave/tejon	El Paso	950.1 ft	Good	2002
SH 82 Ebnd Ml over Draw	Pitkin	950.1 ft	Good	2003
SH 82 Ml Ebnd over Draw	Pitkin	950.1 ft	Good	2003
WB Auraria PKWY over 5th Street And Railroads	Denver	946.2 ft	Good	1987
Ramp To I 25 Nbnd over Fountain Creek	El Paso	943.2 ft	Good	1990
Weld County PKWY over Cache La Poudre River	Weld	925.5 ft	Good	2016
I 70 Ebnd over Hillside	Eagle	922.2 ft	Fair	1977
US 34 Ml Wbnd over South Platte River	Weld	921.9 ft	Fair	1976
US 34 Ml Ebnd over South Platte River	Weld	921.9 ft	Good	1976
US 36 Ebnd Ml over I 25 Ml Ramps Hov Lanes	Adams	916.0 ft	Good	1994
E-470 NB over South Platte River	Adams	907.5 ft	Good	2003
E-470 SB over South Platte River	Adams	907.5 ft	Good	2003
Proby PKWY Ramp C over Academy/drennan	El Paso	890.4 ft	Fair	2012
US 24 Ml Wbnd over Circle DR Spring Creek	El Paso	879.3 ft	Good	1993
S. Platte River DR over South Platte River	Denver	865.2 ft	Good	2015
SH 340 Ml Wbnd over Colorado River	Mesa	861.2 ft	Fair	1974
SH 340 Ml Ebnd over Colorado River	Mesa	861.2 ft	Fair	1950
Ramp To I 70 Ebnd over I 25 Ml Ramps R	Denver	842.8 ft	Fair	1993
US 36 Wbnd Ml over I 25 Ml Ramps Hov Lanes	Adams	841.5 ft	Fair	1998
SH 14 Ml over Pawnee Creek	Logan	833.7 ft	Fair	1999
US 50 Ml Wbnd over Arkansas River	Bent	833.3 ft	Fair	1966
US 50 Ml Ebnd over Arkansas River	Bent	833.3 ft	Fair	1974
County Road 40 over South Platte River	Logan	832.3 ft	Fair	1988
US 50 Ml over Up Rr	Mesa	831.4 ft	Fair	1997
I270 Wbnd Ml over I76 Ramp Sh224 Clear Crk	Adams	828.7 ft	Fair	1998
I 270 Ebnd over I76 Ramp Sh224 Clear Crk	Adams	818.9 ft	Fair	1999
US 34 Business over South Platte River	Weld	818.6 ft	Fair	1961
Pinon Road over Fountain Creek	Pueblo	816.6 ft	Fair	2004
US 6 Ml over South Platte River	Logan	811.7 ft	Fair	1966
Main Street over Drgwrr Atsfrw Arkansas R	Pueblo	807.1 ft	Fair	1995
County Road 29 over Colorado River	Mesa	806.8 ft	Fair	2006
Ramp To I 76 Wbnd over Ramp Clear Creek R	Adams	805.8 ft	Fair	1992
Ramp B over I-25 And Nwp	Broomfield	805.8 ft	Good	2003
E-470 Ramp F over I25 Nwp	Adams	803.5 ft	Good	2003
Central Park BLVD over Smith RD \| Uprr \| Sand C	Denver	803.1 ft	Good	2012
I 70 Ml Ebnd over Colorado River	Garfield	790.4 ft	Fair	1985
SH 60 Ml over South Platte River	Weld	790.0 ft	Good	2018
E-470 NB over Us85 Uprr Fulton Ditch	Adams	781.8 ft	Good	2001
I25nb Ramp To C470 over I 25 SH 470 Ml Ramps R	Douglas	781.5 ft	Fair	1985
E-470 SB over Us85 Uprr Fulton Ditch	Adams	779.5 ft	Good	2002
29 Road over Rr/i70 Business	Mesa	779.2 ft	Good	2010
I 70 Ml Ebnd over French Creek	Garfield	775.9 ft	Good	1991
W Evans Avenue over S Elati ST \| SB Santa Fe	Denver	769.0 ft	Fair	1972
I 70 Ml Wbnd over Hillside	Eagle	767.1 ft	Good	1977
Rmp To EB I70/i76 over I 70 Ml SH 121 R	Jefferson	765.1 ft	Fair	1985
SH 470 Ml Wbnd over SH 8 Bear Creek	Jefferson	765.1 ft	Fair	1989
SH 470 Ml Ebnd over SH 8 Bear Creek	Jefferson	764.8 ft	Fair	1989
N Meadows Drive over East Plum Creek	Douglas	757.2 ft	Fair	2015
Front Street over 7th Street \| Railroad	Douglas	752.3 ft	Good	2004
SH 88 Ml/arap RD over Cherry Creek	Arapahoe	751.6 ft	Good	2015
I 70 Ml Ebnd over Black Gore Creek	Eagle	748.0 ft	Fair	1977
I 70 Ml Wbnd over Black Gore Creek	Eagle	747.7 ft	Fair	1977
I 70 Ml Ebnd over Polk Creek	Eagle	732.0 ft	Poor	1978
22nd ST Ramp over Coors Field Lot \| Rtd \|	Denver	726.0 ft	Fair	1994
I 70 Wbnd over County RD 743/vail Pass-	Eagle	724.1 ft	Fair	1977
I 70 Ml Wbnd over Up Rr Colorado River	Garfield	722.1 ft	Fair	1992
SB US 85 Off Ramp over Terrain	Douglas	717.5 ft	Fair	2014
I 70 Ml Wbnd over I70 Ramp Rr Colo Rvr	Garfield	714.6 ft	Good	1992
US 50 + SH 789 NB over Colorado River	Mesa	705.4 ft	Good	1989
County Road 61 over South Platte River	Weld	705.4 ft	Fair	1997
I 70 Ml Wbnd over US 6 Rr Eagle River	Eagle	704.1 ft	Fair	1970
US 50 Ml Ebnd over Colorado River	Mesa	704.1 ft	Fair	1965
County Road 53 over South Platte River	Weld	702.8 ft	Good	2020
120th AVE Ebnd over S. Platte River	Adams	702.4 ft	Good	2005
I 70 Ml Wbnd over Box Elder Creek	Adams	702.4 ft	Fair	1960
I 70 Ml Ebnd over Box Elder Creek	Adams	702.4 ft	Fair	1960
Redlands Parkway over Colorado River	Mesa	702.4 ft	Fair	1982
I 70 Ebnd over US HWY 6 Rr Eagle Rive	Eagle	702.1 ft	Fair	1970
I 70 Ml Ebnd over Co RD Gore Creek	Eagle	700.5 ft	Fair	1977
US 224 Ml-70th AVE over I 25 Ml	Adams	694.9 ft	Good	1991
I 70 EB Offramp over Co River Bp R	Garfield	694.2 ft	Good	1992
La Crosse AVE over Arkansas River	Pueblo	693.6 ft	Fair	1959
120th AVE Wbnd over S. Platte River	Adams	690.0 ft	Good	2005
Stephen D Hogan Pk over Sand Creek	Arapahoe	685.0 ft	Good	2019
E-470 NB over I76 Bnsfrr Cameron DR	Adams	678.1 ft	Good	2001
E-470 SB over I76 Bnsfrr Cameron DR	Adams	678.1 ft	Good	2001
EB Broncos Parkway over Cherry Creek	Arapahoe	678.1 ft	Fair	2004
WB Broncos Parkway over Cherry Creek	Arapahoe	678.1 ft	Fair	2004
Ramp To US 24 Ebnd over Fountain Creek	El Paso	672.9 ft	Fair	1990
SB 225 Ramp To 83 over SH 83 Ml R	Arapahoe	665.7 ft	Fair	2002
Ramp To I 25 Nbnd over Interchange Row R	Denver	664.0 ft	Fair	1989
SH 71 Ml over Arkansas River	Otero	655.2 ft	Good	2019
EB Meadows Parkway over East Plum Creek \| Railro	Douglas	654.9 ft	Good	1987
WB Meadows Parkway over Ped Path \| East Plum Cre	Douglas	654.9 ft	Good	1987
I 70 Ml Wbnd over US 6 Rr Eagle River	Eagle	654.2 ft	Fair	1972
I 70 Ml Ebnd over US 6 Rr Eagle River	Eagle	654.2 ft	Fair	1972
County Road 33 over South Platte River	Morgan	653.9 ft	Fair	1987
I 70 Ml Ebnd over West Ten Mile Creek	Summit	647.0 ft	Fair	1977
I 70 Ml Wbnd over West Bijou Creek	Arapahoe	644.4 ft	Fair	1993
I 70 Ml Ebnd over West Bijou Creek	Arapahoe	644.0 ft	Fair	1993
Ramp A over Cherry Creek	Douglas	642.1 ft	Good	1990
E470wb Ramp To 25 over I 25 SH 470 Ml R	Douglas	638.1 ft	Fair	1991
US 287 Ml over Big Sandy Creek	Cheyenne	637.1 ft	Fair	1971
Academy BLVD SB over US 85 Ml Bnsf Rr	El Paso	637.1 ft	Fair	1972
Academy BLVD NB over US 85 Ml Bnsf Rr	El Paso	637.1 ft	Fair	1972
C470 EB Ramp To 25 over I 25 SH 470 Ml R	Douglas	636.5 ft	Fair	1985
Ramp To US 85 Nbnd over Ramp To US 85 Nbnd[ne] R	Denver	632.5 ft	Good	1986
I 70 Ml Ebnd over Colorado River	Garfield	630.9 ft	Fair	1987
I70 Ml EB over Washington St/s Platte R	Denver	630.6 ft	Good	2001
I70 Ml WB over Washington St/s Platte R	Denver	630.2 ft	Good	2003
Pena BLVD Nbnd Rmp over I 70 Ml	Adams	629.9 ft	Good	1993
6thavermp Toi25 NB over Ramp To 8th AVE R	Denver	628.0 ft	Fair	1988
Colorado Avenue over Railroad/sierra Madre ST	El Paso	626.6 ft	Good	1998
US 24 Ml Ebnd over City ST Up Rr Ditch	El Paso	626.3 ft	Good	1990
US 24 Ml Wbnd over City ST Up Rr Ditch	El Paso	626.3 ft	Good	1990
WB Cottonwood Driv over Cherry Creek \| Cherry CR	Douglas	625.0 ft	Fair	1988
EB Cottonwood Driv over Cherry Creek \| Cherry CR	Douglas	625.0 ft	Good	2021
I 270 Ml Ebnd over I 70 Ml	Denver	623.0 ft	Good	2019
Hov Ramp over I 25 Nbnd R	Denver	620.1 ft	Good	1993
SH 82 Ml over Maroon Creek	Pitkin	620.1 ft	Fair	2005
Wewatta ST Ramp over Railroad/rtd	Denver	618.4 ft	Fair	1996
I 76 Ml Wbnd over 60th AVE & Ditch	Adams	618.1 ft	Good	1988
I 76 Ml Ebnd over 60th AVE & Ditch	Adams	618.1 ft	Fair	1988
Hess Road WB over Cherry Creek \| Colorado	Douglas	615.5 ft	Good	2008
Hess Road EB over Cherry Creek \| Colorado	Douglas	615.5 ft	Good	2014
Pine Lane over Cherry Creek \| Cherry CR	Douglas	615.5 ft	Good	2008
County Road 25 over South Platte River	Logan	614.8 ft	Good	1996
I 70 Ml Wbnd over Colorado River Ovflw	Mesa	614.2 ft	Fair	1982
SH 144 Ml over South Platte River	Morgan	614.2 ft	Good	1996
Park AVE W \| 23rd over Coors Field Lot \| Rtd \|	Denver	613.2 ft	Fair	1995
I 70 Ml Wbnd over Hillside	Garfield	613.2 ft	Good	1986
SH 96 Ml over Up Rr Fountain Crk	Pueblo	611.2 ft	Poor	1954
SH 340 Ml over Colorado River	Mesa	609.3 ft	Fair	1970
County Road 4 over I 76 Ml Bnsf Rr	Weld	609.3 ft	Fair	1981
E-470 NB over Cherry Creek	Douglas	607.9 ft	Good	1996
E-470 SB over Cherry Creek	Douglas	607.9 ft	Good	1990
I 76 Ml Wbnd over Bnsf Rr Beaver Creek	Morgan	607.0 ft	Poor	1960