Jefferson County, CO

464 public highway bridges

Jefferson County Bridge Snapshot

Jefferson County, Colorado contains 464 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.3% are rated “Good,” 50% “Fair,” 3.9% “Poor,” and 3.9% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CO are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

464
Total Bridges
29.3%
Good
3.9%
Poor
3.9%
Structurally Deficient

Condition Distribution

Good
29.3% (136)
Fair
50% (232)
Poor
3.9% (18)
SD
3.9% (18)

All Bridges (464)

I70 ML

Fair

Over: APEX GULCH

JUST E OF COLFAX EXIT, Jefferson, CO

Built 1968 Load: 99.9 t ADT: 87,000

US 6 ML

Fair

Over: DRAW

1.0 MI E OF INDIANA AVE, Jefferson, CO

Built 1947 Load: 99.9 t ADT: 63,000

SH 121 ML

Fair

Over: PED UNDERPASS,DRAW

0.2 MI NO OF JCT SH 470, Jefferson, CO

Built 1964 Load: 99.9 t ADT: 20,000

SH121 ML-WADSWORTH

Fair

Over: DUTCH CREEK

.2 MI. S. OF COAL MINE RD, Jefferson, CO

Built 1965 Load: 99.9 t ADT: 29,000

SH 121 ML

Fair

Over: DEER CREEK

2.0 MI S OF JCT SH 470, Jefferson, CO

Built 1968 Load: 99.9 t ADT: 23,000

US 285 ML & RAMP

Fair

Over: PARMALEE GULCH

AT INDIAN HILLS RD INTERS, Jefferson, CO

Built 1993 Load: 99.9 t ADT: 27,000

US 285 ML

Fair

Over: ELK CREEK

SHAFFERS CROSSING, Jefferson, CO

Built 1958 Load: 99.9 t ADT: 17,000

ELDRIDGE STREET

Fair

Over: WEAVER CREEK

0.6 mi S. of Quincy Ave, Jefferson, CO

Built 2012 Load: 99.9 t ADT: 1,067

W. QUINCY AVENUE

Fair

Over: WEAVER CREEK

0.3 MI N of BELLEVIEW AVE, Jefferson, CO

Built 2006 Load: 99.9 t ADT: 9,838

COLLINS AVENUE

Fair

Over: LAKEWOOD GULCH

0.1 MI E OF SIMMS ST, Jefferson, CO

Built 1997 Load: 99.9 t ADT: 2,008

US 6 ML

Good

Over: CLEAR CREEK

0.1 Mi S of SH58, Jefferson, CO

Built 1999 Load: 14.5 t ADT: 28,000

COUGAR ROAD

Good

Over: DEER CREEK

2.7 MI W OF SH75, Jefferson, CO

Built 1969 Load: 18.1 t ADT: 889

RAMP TO SH 470 WBD

Good

Over: BEAR CREEK R

SE CRNR OF MORRISON RD. I, Jefferson, CO

Built 1989 Load: 19.3 t ADT: 39,500

US 285 ML

Good

Over: CONIFER ROAD

2 MI NE OF CONIFER, Jefferson, CO

Built 2002 Load: 21.4 t ADT: 23,000

US 285 ML

Good

Over: KENNEDY GULCH RD

1/2 MI W OF CONIFER, Jefferson, CO

Built 2002 Load: 22.0 t ADT: 26,000

92ND LANE

Good

Over: FARMERS HIGHLINE CANAL

JUST N OF 92 AVENUE, Jefferson, CO

Built 1995 Load: 22.5 t ADT: 609

41ST AVENUE

Good

Over: LENA GULCH

JUST E OF KIPLING, Jefferson, CO

Built 1981 Load: 22.7 t ADT: 411

RESEARCH ROAD

Good

Over: LENA GULCH

0.1 mi N of S Golden Rd, Jefferson, CO

Built 2012 Load: 23.3 t ADT: 2,445

RAMP TO SH 470 EBD

Good

Over: BEAR CREEK R

SW CRNR OF MORRISON RD.IN, Jefferson, CO

Built 1989 Load: 24.7 t ADT: 39,500

DEER CRK CANYON RD

Good

Over: DEER CREEK

1.4 MI E OF PHILLIPSBURG, Jefferson, CO

Built 1969 Load: 27.0 t ADT: 2,820

BEECH STREET

Good

Over: RALSTON CREEK

0.3 MI SOUTH OF 72ND AVE, Jefferson, CO

Built 1978 Load: 27.3 t ADT: 1,714

US 285 ML

Good

Over: PLEASANT PARK RD.

Conifer, Jefferson, CO

Built 2003 Load: 27.4 t ADT: 25,000

OLD GOLDEN ROAD

Good

Over: LENA GULCH

East of Noble Road, Jefferson, CO

Built 2014 Load: 29.2 t ADT: 17,591

SHERIDAN BLVD

Good

Over: BIG DRY CREEK

0.2 MI S OF 112TH AVENUE, Jefferson, CO

Built 1995 Load: 29.4 t ADT: 28,771

KIPLING STREET

Good

Over: FARMERS HIGHLINE CANAL

JUST SOUTH OF 86TH PKWY, Jefferson, CO

Built 1984 Load: 29.7 t ADT: 8,443

SH 470 ML EBND

Good

Over: BELLEVIEW AVE

1.2 MI S OF JCT SH 285, Jefferson, CO

Built 1990 Load: 30.0 t ADT: 31,500

US 6 ML

Good

Over: MAYHEM GULCH

1.8 MI E OF JCT SH 119, Jefferson, CO

Built 1950 Load: 30.4 t ADT: 7,500

EB 86TH PARKWAY

Good

Over: CROKE CANAL

0.1 MI WEST OF KIPLING, Jefferson, CO

Built 1984 Load: 31.4 t ADT: 7,964

YOUNGFIELD ST

Good

Over: CLEAR CREEK

.79 MI N OF W 32ND AVENUE, Jefferson, CO

Built 1988 Load: 31.6 t ADT: 14,909

VANCE ST

Good

Over: LAKEWOOD GULCH

BTWN HIGHLAND DR & 9TH AV, Jefferson, CO

Built 1967 Load: 31.7 t ADT: 348

I 76 EBND

Good

Over: 52ND AVE

.4 MI E OF MARSHALL-I76, Jefferson, CO

Built 1983 Load: 31.8 t ADT: 38,000

WBND SH 74 ML

Good

Over: TROUBLESOME CREEK

S OF BERGEN PARK, Jefferson, CO

Built 1995 Load: 31.8 t ADT: 8,500

SH 470 ML WBND

Good

Over: KIPLING PARKWAY

12.4 MI S OF I 70, Jefferson, CO

Built 1986 Load: 31.8 t ADT: 24,500

MCINTYRE STREET

Good

Over: FARMERS HIGHLINE CANAL

JUST S OF 52ND DRIVE, Jefferson, CO

Built 2001 Load: 31.8 t ADT: 22,206

I70 WB OFFRAMP

Good

Over: 32ND AVE

AT 32ND AVENUE, Jefferson, CO

Built 2021 Load: 32.4 t ADT: 91,000

US 6 RAMP

Good

Over: EB C-D ROAD

EBND ON RAMP, Jefferson, CO

Built 2015 Load: 32.4 t ADT: 136,000

SH 74 ML

Good

Over: TROUBLESOME CREEK

WEST EDGE OF KITTREDGE, Jefferson, CO

Built 1959 Load: 32.6 t ADT: 6,000

COUNTY ROAD 65

Good

Over: SODA CREEK

1.3 MI SO OF I 70, Jefferson, CO

Built 1978 Load: 32.7 t ADT: 4,517

70TH AVENUE

Good

Over: FARMERS HIGHLINE CANAL

0.3 MI E OF QUAKER STREET, Jefferson, CO

Built 1993 Load: 32.7 t ADT: 231

CARR DRIVE

Good

Over: FARMERS HIGHLINE CANAL

.25 MI NORTH OF 74TH AVE, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 3,900

CARR DRIVE

Good

Over: CROKE CANAL

.30 MI NORTH OF 74TH AVE, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 3,900

DEFRAME CT

Good

Over: LOCAL DRAINAGE

JUST S OF WYNDHAM PARK, Jefferson, CO

Built 1999 Load: 32.7 t ADT: 64

INDIANA STREET

Good

Over: BIG DRY CREEK

.25 MI N OF CANDELAS PKWY, Jefferson, CO

Built 2019 Load: 32.7 t ADT: 20,390

OAK STREET

Good

Over: VAN BIBBER CREEK

JUST SOUTH OF 58TH AVE, Jefferson, CO

Built 2001 Load: 32.7 t ADT: 2,067

VANCE DRIVE

Good

Over: LITTLE DRY CREEK

0.1 MI SOUTH OF 80TH AVE, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 2,608

COUNTY ROAD 122

Good

Over: SOUTH TURKEY CREEK

2 MI SOUTH OF TINYTOWN, Jefferson, CO

Built 2000 Load: 32.7 t ADT: 1,690

SH 95 ML

Good

Over: PEDESTRIAN UNDERPASS

JUST S OF US36, Jefferson, CO

Built 2023 Load: 32.7 t ADT: 31,000

US 285 ML

Good

Over: WILDLIFE CROSSING

NEAR CONIFER, Jefferson, CO

Built 2009 Load: 32.7 t ADT: 19,000

50TH AVENUE

Good

Over: FARMERS HIGHLINE CANAL

.5 MI W OF MCINTYRE, Jefferson, CO

Built 1972 Load: 32.7 t ADT: 3,277

INDIANA ST

Good

Over: CROKE CANAL

.4 MI N OF 52ND AVE, Jefferson, CO

Built 2008 Load: 32.7 t ADT: 3,405

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial