Bridges in Boulder County, Colorado

321Total Bridges

103Good

211Fair

7Poor

Bridge	Condition	Length	Traffic	Year
US 36 Ml Wbnd over Boulder Creek	Poor	96.5 ft	18,000	1952
SH 7 Ml Wbnd over Boulder Creek	Poor	102.7 ft	15,000	1938
3rd AVE WB over Gw Rr	Poor	123.7 ft	9,116	1974
Rock Creek PKWY over Community Ditch	Poor	35.1 ft	7,760	2000
South Bowen Street over Left Hand Creek	Poor	30.8 ft	1,835	1965
No. 30th Street over Four Mile Creek	Poor	71.9 ft	1,424	1973
US 36 Fr RD over Boulder Creek SR	Poor	96.5 ft	1,264	1952
US 36 Ml over Canyon Creek	Fair	33.5 ft	45,000	1951
Table Mesa Drive over US 36 Ml	Fair	178.1 ft	44,000	1951
SH 157 Ramp over US 36 Ml	Fair	228.0 ft	44,000	1971
SH 157 Ml over Skunk Creek	Fair	28.5 ft	43,000	1978
SH 157 Ml over Pearl Street	Fair	153.9 ft	43,000	1985
SH 157 Ml over Bnsf Rr	Fair	185.4 ft	43,000	1981
SH 157 Ml over Boulder Creek	Fair	367.5 ft	43,000	1981
SH 157 Ml over Walnut Street	Fair	151.9 ft	43,000	1981
SH 157 Ml over South Goose Creek	Fair	44.3 ft	42,000	1986
SH 157 Ml over North Goose Creek	Fair	62.3 ft	42,000	1986
US 287 Ml over Draw	Fair	32.2 ft	39,000	1994
SH 157 Ml over Bear Canyon Creek	Fair	46.9 ft	38,000	1978
South Boulder RD over Drainage Ditch Ar	Fair	20.0 ft	37,000	1996
SH 157 Ml over Wonderland Creek	Fair	58.4 ft	34,000	1987
SH 157 Ml over Boulder Whiterock Ditch	Fair	21.0 ft	34,000	1987
SH 157 Ml over SH 119 Ml	Fair	198.5 ft	34,000	1988
SH 157 Ml over Bnsf Rr	Fair	339.6 ft	34,000	1988
30th Street over Boulder Creek	Fair	62.0 ft	33,663	1963
Hover Road over Dry Creek No. 1	Fair	44.9 ft	29,369	1985
SH 7 Ml over Bear Canyon Creek	Fair	86.3 ft	29,000	1985
SH 7 (arapahoe) over Bike/ped Underpass	Fair	22.0 ft	29,000	2006
SH 93 Ml over Ped. Underpass	Fair	27.9 ft	27,000	2013
SH 93 Ml over Pedestrian Underpass	Fair	26.2 ft	27,000	1992
Hover Road over St. Vrain River	Fair	101.0 ft	26,762	1960
SH 119 over Wonderland Crk And Path	Fair	30.5 ft	26,000	2006
US 287 Ml over Lower Boulder Ditch	Fair	20.3 ft	26,000	1997
Hover Road over Oligarchy Ditch	Fair	30.8 ft	25,769	1990
SH 7 Ml over South Boulder Creek	Fair	78.7 ft	25,000	1938
Pearl Parkway over Left Hand Ditch	Fair	34.1 ft	24,744	1981
US 287 Ml over Left Hand Creek	Fair	43.0 ft	24,000	1948
US 287 Ml over Boulder Creek	Fair	221.1 ft	24,000	1985
US 287 Ml over Dry Creek	Fair	39.0 ft	24,000	1990
SH 119 Ml over Oligarchy Ditch	Fair	21.0 ft	24,000	2004
Sh170 Ml(mccaslin) over US 36 Ml	Fair	192.6 ft	24,000	1983
US 287 Ml over Highland Ditch	Fair	31.8 ft	23,000	1999
SH 93 Ml over Boulder Creek	Fair	206.0 ft	22,000	2004
SH 119 Sbnd over Beasley Ditch	Fair	20.7 ft	22,000	1971
SH 119 Ml Sbnd over Beasley Ditch	Fair	20.7 ft	22,000	1971
US 287 Ml over Dry Creek	Fair	21.0 ft	22,000	1947
SH 119 Ml NB over Beasley Ditch	Fair	22.6 ft	22,000	1958
30th Street over North Goose Creek	Fair	59.7 ft	21,233	1994
SH 93 Ml over Skunk Creek / Ped Path	Fair	22.0 ft	20,000	2014
SH 7 Ml over Draw	Fair	34.8 ft	19,000	1928
SH 157 Ml Nbnd over South Boulder Road	Fair	184.7 ft	19,000	1973
SH 157 Ml Sbnd over S Bldr Rd-tble Msa DR	Fair	152.9 ft	19,000	1973
US 36 Ml Ebnd over Boulder Creek	Fair	96.5 ft	18,000	1960
Mccaslin BLVD over Coal Creek	Fair	79.1 ft	17,606	1995
SH 93 Ml over South Boulder Creek	Fair	73.2 ft	17,000	1969
3rd Avenue over Oligarchy Ditch	Fair	48.2 ft	16,797	1969
30th Street over Empson Ditch	Fair	24.9 ft	16,733	1963
Ebnd US 36 Ml over US 36 Spur/baseline RD	Fair	178.8 ft	16,500	1963
US 36 Ml over Four Mile Canyon Creek	Fair	92.8 ft	16,000	1957
SH 93 Ml over Coal Creek	Fair	36.4 ft	16,000	1965
Dillon Road over Coal Creek & Ped Tra	Fair	43.0 ft	15,732	1993
Valmont RD (cr 52) over South Boulder Creek	Fair	189.0 ft	15,236	2006
SH 7 Ml Ebnd over Boulder Creek	Fair	154.9 ft	15,000	1966
US 36 Ml over Supply Ditch	Fair	22.6 ft	15,000	1972
US 36 Ml over Highland Canal	Fair	37.7 ft	15,000	1972
Baseline Road over Bear Canyon Creek	Fair	40.4 ft	14,884	1980
9th Street over Boulder Creek	Fair	145.0 ft	14,000	1978
SH 119 Ml Nbnd over Left Hand Creek	Fair	143.0 ft	14,000	1959
Airport Road over Lykins Gulch	Fair	58.7 ft	13,906	2006
Folsom Street over Boulder Whiterock Ditch	Fair	23.0 ft	13,574	1970
Pike Road over Left Hand Creek	Fair	44.6 ft	13,459	1994
Airport Road over St. Vrain River Overflow	Fair	43.6 ft	13,131	2006
E 9th Avenue over Oligarchy Ditch	Fair	82.3 ft	12,630	2004
47th Street over SH 157 Ml	Fair	389.8 ft	12,000	1989
SH 119 Ml Wbnd over St. Vrain River	Fair	290.4 ft	12,000	2003
Nwp EB over US 287	Fair	246.4 ft	12,000	2002
Nwp WB over US 287	Fair	246.4 ft	12,000	2002
Nwp WB over EB Dillon Road	Fair	315.0 ft	12,000	2002
Pratt Parkway over Bnrr And 1st Avenue	Fair	258.9 ft	11,924	1980
Broadway over Four Mile Creek/bike Pth	Fair	42.7 ft	11,874	1994
Martin Street over Saint Vrain River	Fair	303.1 ft	11,759	2009
North 55th Street over Boulder Creek	Fair	200.5 ft	11,600	1985
Rock Creek Pkwy. over Rock Creek	Fair	101.0 ft	11,360	1999
Airport Road over Dry Creek	Fair	52.5 ft	11,244	1994
SH 42 Ml over Coal Creek	Fair	40.0 ft	11,000	1967
Folsom Street over Goose Creek	Fair	41.3 ft	10,980	1970
Lookout Road over Whiterock Ditch	Fair	21.0 ft	10,395	1996
Pearl Parkway over S. Goose Creek Drainage	Fair	75.1 ft	10,375	1986
Public Road over Coal Creek	Fair	45.9 ft	10,350	1927
Airport Road (cr25 over Left Hand Creek	Fair	68.6 ft	10,085	2003
6th Street over Boulder Creek	Fair	122.0 ft	10,000	1978
County Road 1 over Big Dry Creek	Fair	30.8 ft	9,859	1995
South Boulder Road over Viele Channel (ditch)	Fair	43.0 ft	9,270	1975
S Boulder Road over South Boulder Creek	Fair	120.7 ft	9,270	1986
55th Street over Empson Ditch	Fair	48.9 ft	9,146	1996
US 36 Ml over North ST Vrain Creek	Fair	88.6 ft	9,000	2007
N. 75th ST (cr 25) over Boulder Creek	Fair	111.9 ft	8,907	1978
SH 52 Ml over White Rock Boulder Ditch	Fair	25.6 ft	8,900	1965
Folsom Street over Boulder Creek	Fair	60.0 ft	8,407	1965
Pearl Parkway over North Goose Creek	Fair	43.6 ft	8,372	1986
120th Street over Coal Creek	Fair	44.9 ft	8,097	1977
3rd Ave. EB over Gw Rr	Fair	123.7 ft	7,667	1969
17th Street over Boulder Creek	Fair	104.7 ft	7,658	1985
Colorado Avenue over Skunk Creek	Fair	30.8 ft	7,343	1979
Price/frontage Rds over Dry Creek	Fair	21.0 ft	7,332	1984
Arapahoe Avenue over Boulder Creek	Fair	93.2 ft	7,200	1990
Brockway Drive over Goodhue Ditch	Fair	24.9 ft	6,900	1962
County Road 901 over Boulder Creek	Fair	126.3 ft	6,549	1976
SH 119 Ml over Boulder Creek	Fair	100.1 ft	6,400	1953
SH 119 Ml over Boulder Creek	Fair	120.4 ft	6,400	1953
Nwp EB over EB Dillon Road	Fair	315.0 ft	6,268	2002
County Road 31 over St. Vrain Creek	Fair	115.8 ft	6,233	1979
SH 119 Ml over Middle Boulder Creek	Fair	30.8 ft	5,800	1933
N. 61st Street over Boulder Creek	Fair	93.5 ft	5,789	1986
CR 1 (co Line Rd) over Lower Boulder Ditch	Fair	22.0 ft	5,611	1996
Cherryvale Road over SH 36 Ml	Fair	289.4 ft	5,525	2009
Dry Creek Drive over Dry Creek No. 1	Fair	32.2 ft	5,490	1991
County Road 1 over Coal Creek	Fair	24.3 ft	5,198	1996
Niwot Road (cr 34) over Dry Creek	Fair	28.9 ft	5,021	1985
Baseline Road (cr over South Boulder Creek	Fair	43.3 ft	4,986	1980
Coalton Drive over Rock Creek	Fair	49.9 ft	4,964	2000
SH 119 N/ebnd over Four Mile Creek	Fair	108.9 ft	4,800	1958
47th Street over South Goose Creek	Fair	43.0 ft	4,774	1986
21st AVE Eastbound over Oligarchy Ditch	Fair	20.7 ft	4,495	1975
County Road 33 over Left Hand Creek	Fair	43.3 ft	4,344	1980
Moorhead Avenue over Skunk Creek	Fair	24.6 ft	4,313	1970
SH 128 Ml over Coal Creek	Fair	32.2 ft	4,100	1967
SH 119 Ml over North Beaver Creek	Fair	23.0 ft	4,000	1948
Emma St. over US 287 Ml	Fair	203.1 ft	3,969	1994
Alpine Street over Oligarchy Ditch	Fair	20.3 ft	3,757	1975
Glenwood Drive over Two Mile Creek	Fair	25.6 ft	3,439	1972
120th Street over Rock Creek	Fair	41.3 ft	3,390	1986
SH 119 Ml over North Boulder Creek	Fair	25.3 ft	3,200	1948
Cherryvale Road over Davidson Ditch	Fair	22.6 ft	3,123	1986
Cherryvale Road (c over Davidson Ditch	Fair	22.6 ft	3,123	1973
Nelson RD (cr 20) over Boulder Feeder Ditch	Fair	32.2 ft	2,692	1950
SH 7 Ml over North ST Vrain Creek	Fair	65.9 ft	2,600	1955
Moorhead Avenue over Bear Creek: Bike Path	Fair	31.2 ft	2,461	1995
Kenosha RD (cr 38) over Coal Creek	Fair	31.5 ft	2,305	1965
Flatiron Parkwy over Dry Creek	Fair	67.9 ft	2,240	1985
Mcconnell Drive over Saint Vrain Creek	Fair	95.8 ft	2,031	2006
Iris Avenue over Wonderland Creek	Fair	41.0 ft	1,988	2020
Fordham Street over Dry Creek	Fair	31.8 ft	1,944	1997
Iris Avenue/34 ST over Wonderland Creek	Fair	49.9 ft	1,937	2017
Indiana Avenue over Rock Creek	Fair	28.5 ft	1,916	1999
Eisenhower Drive over Empson Ditch	Fair	33.1 ft	1,860	1972
SH 7 Ml over North ST Vrain Creek	Fair	120.1 ft	1,800	1973
Deerwood Drive over Oligarchy Ditch	Fair	24.9 ft	1,709	2000
County Road 38 over Boulder Creek	Fair	96.5 ft	1,640	1988
104th Street over Nwp	Fair	240.2 ft	1,520	2002
SH 72 Ml over South Boulder Creek	Fair	92.8 ft	1,500	1979
Junction Pl over Goose Creek	Fair	79.4 ft	1,484	2017
County Road 94 over Lefthand Creek	Fair	73.2 ft	1,441	2019
SH 72 Ml over Middle ST Vrain Creek	Fair	110.9 ft	1,400	1959
E 5th Avenue over Oligarchy Ditch	Fair	21.7 ft	1,321	1970
SH 170 Ml over Community Ditch	Fair	43.0 ft	1,300	1999
SH 170 Ml over Davidson Ditch	Fair	24.0 ft	1,200	1952
Monroe Drive over Empson Ditch	Fair	29.9 ft	1,175	2020
Woodland RD (cr4) over Highland Ditch	Fair	24.6 ft	1,163	1976
SH 72 Ml over South ST Vrain Creek	Fair	21.7 ft	1,100	1959
Nwp Ramp over EB Dillon Road	Fair	292.0 ft	1,100	2002
CR 62 (empire Dr) over Coal Creek	Fair	34.1 ft	1,080	1935
Horizon Avenue over Rock Creek	Fair	76.1 ft	1,043	2000
Twin Lakes Road over Bldr And Whiterock Ditch	Fair	20.7 ft	1,018	1975
ST Vrain Road Cr16 over Boulder Feeder Ditch	Fair	28.5 ft	1,009	1955
Spencer Street over Oligarchy Ditch	Fair	20.7 ft	995	1975
Boston AVE over Spring Gulch	Fair	24.9 ft	978	2017
Sterling Drive over Left Hand Ditch	Fair	20.0 ft	937	1975
County Road 132 over Boulder Creek	Fair	36.7 ft	846	1935
Kingsridge Blvd. over Wonderland Creek	Fair	87.9 ft	812	1988
County Road 130 over Middle Boulder Creek	Fair	42.0 ft	742	1990
Juniper Avenue over Elmers Two Mile Ditch	Fair	35.1 ft	666	1965
Martin Drive over Bear Crk And Bike Path	Fair	32.8 ft	662	1995
County Road 84s over South St. Vrain Creek	Fair	58.1 ft	637	1990
Winding Trail DR over Wonderland Creek	Fair	50.9 ft	632	2018
Independence Ave. over Boulder & Whiterock Dtch	Fair	20.3 ft	574	1973
Kalmia Avenue over Elmers Two Mile Ditch	Fair	21.0 ft	551	1973
Sunset Way over Dry Creek	Fair	35.8 ft	540	1996
SB Table Mesa Dr. over Bear Creek	Fair	24.6 ft	508	1980
Hygiene RD (cr 10) over St. Vrain Creek	Fair	103.7 ft	502	1981
2nd Avenue over Coal Creek	Fair	65.9 ft	492	1992
15th Avenue over Oligarchy Ditch	Fair	21.7 ft	450	1989
Oxford RD (cr 26) over Boulder Feeder Ditch	Fair	29.2 ft	422	1950
SH 170 Ml over South Boulder Creek	Fair	41.0 ft	388	1930
Marshall RD (cr 51 over South Boulder Creek	Fair	38.1 ft	318	1988
County Road 47 over St. Vrain Supply Canal	Fair	54.1 ft	316	1997
Mc Sorley Lane over South Boulder Creek	Fair	51.8 ft	272	1970
County Road 80 over North St. Vrain Creek	Fair	61.0 ft	268	1988
County Road 1 over New Ish Ditch	Fair	24.9 ft	260	1980
Logan Mill Road over Four Mile Creek	Fair	62.7 ft	238	2019
N 41st ST (cr 59) over Left Hand Creek	Fair	32.5 ft	226	1960
County Road 124e over North Boulder Creek	Fair	29.5 ft	214	1994
Boulder Hills DR over Boulder Feeder Ditch	Fair	45.9 ft	209	1980
County Road 80 over North St. Vrain Creek	Fair	49.9 ft	199	1988
Prospect Road Cr24 over Boulder Feeder Ditch	Fair	31.8 ft	180	1988
County Road 71 over North St. Vrain Creek	Fair	76.1 ft	178	1991
County Road 103 over Middle St. Vrain Creek	Fair	43.0 ft	170	1993
Cr124e-hummer Dr. over North Boulder Creek	Fair	29.5 ft	135	1994
C. R. 41 (63rd St) over St. Vrain Creek	Fair	59.1 ft	134	1991
County Road 84w over North St. Vrain Creek	Fair	44.9 ft	122	1927
Sixth ST (cr 130) over Middle Boulder Creek	Fair	31.8 ft	106	2005
Niwot Meadow Farm over Dry Creek No 2	Fair	74.1 ft	102	2005
Strath Street over Left Hand Creek	Fair	28.9 ft	92	1970
County Road 128e over North Boulder Creek	Fair	34.4 ft	80	1994
Rogers Road over Lykin Gulch	Fair	162.4 ft	80	2000
County Road 35 over St. Vrain Creek	Fair	94.5 ft	78	1996
Wild Basin Road over North St. Vrain Creek	Fair	28.9 ft	75	1982
Wild Basin Road over North St. Vrain Creek	Fair	24.9 ft	75	1982
County Road 116 over Boulder Creek	Fair	27.6 ft	74	1995
Co RD 54a over Middle Boulder Creek	Fair	23.6 ft	70	1917
County Road 84s over South St. Vrain Creek	Fair	182.4 ft	67	2019
Co RD 54a over Middle Boulder Creek	Fair	33.1 ft	66	1917
County Road 96 over South St. Vrain Creek	Fair	24.9 ft	64	2000
County Road 9 over Boulder Creek	Fair	76.8 ft	59	1960
County Road 103 over Middle St. Vrain Creek	Fair	35.1 ft	56	1927
Fdr 112 over South ST Vrain Creek	Fair	41.3 ft	50	1989
Fdr 298 & Bc 116 over North Boulder Creek	Fair	27.9 ft	40	1970
Boulder Creek Path over Boulder Creek	Fair	44.9 ft	11	2020
US 36 Ml over South Boulder Creek	Good	114.8 ft	77,000	1951
US 36 Ml over Davidson Ditch	Good	23.3 ft	77,000	2015
US 36 Ml over Coal Creek	Good	56.1 ft	66,000	2015
US 287 over Draw	Good	24.9 ft	39,000	1993
US 287 Ml over Coal Creek	Good	141.1 ft	32,000	1996
EB US 36 Off Ramp over EB Bus Ramp	Good	45.3 ft	26,000	2016
SH 119 Ml E.bnd over Left Hand Creek	Good	174.2 ft	24,000	2003
SH 119 Ml W.bnd over Lefthand Creek	Good	174.2 ft	24,000	2003
US 287 Ml over ST Vrain Creek	Good	248.0 ft	24,000	2016
US 287 Ml over Draw	Good	24.9 ft	23,000	1990
Iris AVE over Elmers Two Mile Ditch	Good	20.0 ft	21,112	2005
SH 157 Nbnd over Four Mile Canyon Creek	Good	132.2 ft	20,500	1988
SH 157 Sbnd over Four Mile Canyon Creek	Good	132.2 ft	20,500	1988
30th Street over Boulder Lefthand Ditch	Good	67.9 ft	20,225	2011
SH 119 Nbnd over Dry Creek	Good	37.1 ft	18,500	1959
SH 7 Ml over Coal Creek	Good	146.0 ft	17,000	1990
SH 93 Ml over Bear Creek Ditch	Good	21.0 ft	17,000	1969
US 36 Wbnd Spur over US 36 Spur/baseline RD	Good	314.0 ft	16,500	1993
US 287 Nbnd over Rock Creek	Good	111.9 ft	16,500	1993
US 287 Ml Sbnd over Rock Creek	Good	111.9 ft	16,500	1994
US 36 Ml over Ped Underpath / Creek	Good	34.4 ft	16,000	2015
96th Street over Bnsf Rr	Good	252.0 ft	15,821	2006
96th Street over Coal Creek	Good	247.0 ft	15,821	2006
County Line Road over Spring Gulch #2	Good	33.1 ft	15,509	2021
Valmont RD over Boulder Creek	Good	189.0 ft	14,324	1999
SH 119 Ml Sbnd over Left Hand Creek	Good	123.4 ft	14,000	1975
SH 52 Ml over Boulder Creek	Good	218.5 ft	14,000	2011
Airport Road over St. Vrain River	Good	221.5 ft	13,131	2006
US 36 Ml over Left Hand Creek	Good	154.9 ft	13,000	2019
S. Pratt Parkway over ST Vrain Creek	Good	242.8 ft	12,909	2019
SH 119 Ml Ebnd over ST Vrain River	Good	290.4 ft	12,000	2003
N. 95th ST (cr19) over Left Hand Creek	Good	102.7 ft	11,067	2009
Valmont Road over Elmers Twomile Creek	Good	22.0 ft	10,720	2010
27th Way over Skunk Creek	Good	20.0 ft	10,468	2008
Arapahoe Avenue over Boulder Creek	Good	88.9 ft	10,452	1988
Lookout Road over Boulder Cr. Supply Ditch	Good	20.3 ft	10,395	1996
Boston AVE (cr 18) over St. Vrain Creek	Good	225.1 ft	9,636	2024
17th Avenue over Spring Gulch	Good	48.6 ft	9,396	2000
US 36 Ml over North ST Vrain Creek	Good	93.2 ft	9,000	2007
US 36 Ml over ST Vrain Creek	Good	121.1 ft	8,200	2000
WB US 36 On Ramp over WB Bus Ramp/bike Path	Good	75.1 ft	8,180	2016
88th St. over US 36 Ml	Good	324.8 ft	8,157	2000
95 Street (cr 19) over Boulder Creek	Good	125.0 ft	7,778	2010
N. 95th ST (cr 19) over Liggett Ditch	Good	22.3 ft	7,744	1984
Pace Street over Spring Gulch	Good	45.3 ft	7,639	2000
Sunset Street over Saint Vrain Creek	Good	210.0 ft	7,282	2016
S Pratt Parkway over Left Hand Creek	Good	57.1 ft	4,798	2012
Grandview Meadow D over Dry Creek	Good	20.7 ft	3,692	2004
N. 119th ST (cr 3) over St. Vrain Creek	Good	127.0 ft	3,288	1988
N. 63rd ST (cr39) over Leggett Ditch	Good	45.6 ft	3,275	2015
Kalmia Avenue over Dry Creek	Good	37.1 ft	2,621	2017
N 63rd ST (cr 39) over Lefthand Creek	Good	125.0 ft	2,610	2011
Martin Street over Left Hand Creek	Good	227.0 ft	2,572	2016
Co RD 3 / 119th S over Dry Creek No 2	Good	44.0 ft	2,541	2013
Harvard Street over Oligarchy Ditch	Good	25.9 ft	2,509	1998
Flagstaff RD Cr56 over Hillside Slide	Good	161.4 ft	2,463	2014
Flagstaff RD Cr56 over Hillside Slide	Good	169.9 ft	2,463	1996
83rd ST (co RD 23) over Little Thompson River	Good	252.0 ft	2,443	2017
Niwot Road (cr 34) over Boulder Feeder Canal	Good	37.1 ft	2,084	2010
Mcconnell Dr. over Saint Vrain Creek Ovrflw	Good	140.7 ft	2,031	2018
N. 95th ST (cr10) over Highland Ditch	Good	22.6 ft	1,968	1989
Marshall Road over Coal Creek	Good	96.1 ft	1,867	2022
Mohawk Drive over Bear Crk And Bike Path	Good	21.0 ft	1,707	1996
Cord94(lh Cnyn Rd) over Lefthand Creek	Good	60.0 ft	1,681	2016
Junction Place over Boulder And Left Hand Di	Good	28.5 ft	1,484	2021
Mountain Dr. over Clover Basin Ditch	Good	40.0 ft	1,399	2018
South Sunset St. over Left Hand Creek	Good	68.9 ft	1,274	2000
Olympia Avenue over Spring Gulch	Good	44.0 ft	1,207	2000
34th Street over Wonderland Creek	Good	32.2 ft	1,200	2018
Lefthand Canyon DR over Lefthand Creek	Good	26.6 ft	1,078	2019
Spring Drive over Davidson Ditch	Good	24.9 ft	1,022	1970
Second Avenue over St. Vrain Creek	Good	142.1 ft	946	2021
County Road 81 over James Creek	Good	47.6 ft	777	2019
Co RD 39 (65th St) over Lykins Gulch	Good	22.0 ft	741	2012
County Road 81 over Lefthand Creek	Good	59.7 ft	735	2019
Hygiene RD (cr 10) over Boulder Feeder Ditch	Good	28.9 ft	692	1987
48th Street over Goose Creek	Good	44.9 ft	664	1980
Golf Club Drive over Local Drainage	Good	31.5 ft	644	2005
48th Ct over S. Goose Creek	Good	43.6 ft	641	1986
Wagonwheel Gap RD over Fourmile Creek	Good	58.7 ft	630	2019
Fairways Drive over Local Drainage	Good	45.6 ft	622	2005
Wagonwheel Gap RD over Four Mile Creek	Good	22.6 ft	587	2019
Wagonwheel Gap RD over Fourmile Creek	Good	42.3 ft	460	2019
Dillon Road over Rock Creek	Good	38.1 ft	451	2019
N 115th ST over Highland Ditch	Good	23.0 ft	435	2012
Wagonwheel Gap RD over Four Mile Creek	Good	32.2 ft	407	2019
Monarch Road over Dry Creek	Good	25.9 ft	349	2019
Golf Club Drive over Local Drainage	Good	31.5 ft	318	2005
Gilpin Drive over Bear Canyon Creek	Good	20.3 ft	281	1997
Wildwood Road over Bear Canyon Creek	Good	26.9 ft	242	1970
Aurora Avenue over Gregory Creek	Good	20.7 ft	226	1980
27th Street over Goose Creek	Good	68.2 ft	201	2001
Nfsr 112.0 over South ST Vrain Creek	Good	25.6 ft	200	2011
Fdr 114 over Middle St. Vrain Creek	Good	30.8 ft	198	1952
N 49th ST (cr 51) over Left Hand Creek	Good	58.1 ft	191	1993
N 81st ST (cr 31) over Left Hand Creek	Good	56.1 ft	182	1992
Main Street over James Creek	Good	60.0 ft	180	2018
Bow Mountain Rd. over Fourmile Creek	Good	44.0 ft	124	2019
County Road 26 over Left Hand Creek	Good	60.0 ft	121	1991
Anderson Hill ST over James Creek	Good	60.7 ft	117	2016
County Road 103 over Middle St. Vrain Creek	Good	43.3 ft	112	1993
Fdr 114 over Middle St. Vrain Creek	Good	30.2 ft	90	1952
Spring Creek Place over Wonderland Creek	Good	93.8 ft	0	2017