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)

SH 470 ML EBND

Good

Over: KIPLING PARKWAY

12.4 MI S. OF I 70, Jefferson, CO

Built 1986 Load: 39.6 t ADT: 24,500

WESTMOOR DR

Good

Over: WALNUT CREEK

0.1 MI N OF 108TH AVE, Jefferson, CO

Built 1999 Load: 39.8 t ADT: 3,630

COUNTY ROAD 67

Good

Over: GUNBARREL CREEK

AT OX YOKE RANCH, Jefferson, CO

Built 2006 Load: 40.2 t ADT: 692

WYOMING STREET

Good

Over: CRESSMANS GULCH

.1 MI EAST OF FORD STREET, Jefferson, CO

Built 1992 Load: 40.8 t ADT: 440

RALSTON ROAD

Good

Over: RAILROAD

0.5 MI W OF SHERIDAN, Jefferson, CO

Built 1996 Load: 41.0 t ADT: 8,515

MCINTYRE STREET

Good

Over: VAN BIBBER CREEK

1.65 MI N OF 44TH AVE, Jefferson, CO

Built 2019 Load: 41.1 t ADT: 17,056

YALE AVENUE

Good

Over: LOCAL DRAINAGE

0.1 MI W OF HOYT COURT, Jefferson, CO

Built 1982 Load: 41.2 t ADT: 1,889

SIMMS STREET

Good

Over: WEAVER CREEK

0.1 MI SOUTH OF QUINCY, Jefferson, CO

Built 2000 Load: 41.5 t ADT: 16,238

SH 470 ML EBND

Good

Over: DUTCH CREEK

0.5 MI S. OF BOWLES, Jefferson, CO

Built 1988 Load: 42.0 t ADT: 29,000

39TH AVENUE

Good

Over: LENA GULCH

JUST W OF KIPLING ST, Jefferson, CO

Built 2000 Load: 42.5 t ADT: 1,207

US 285 ML

Good

Over: NORTH ACCESS ROAD

US 285 OVER N. ACCESS RD, Jefferson, CO

Built 2002 Load: 42.6 t ADT: 26,000

USFS ROAD 211

Good

Over: GOOSE CREEK

AT GOOSE CREEK CAMPGROUND, Jefferson, CO

Built 1962 Load: 43.9 t ADT: 31

104TH AVE

Good

Over: BIG DRY CREEK

.7 MI W OF SHERIDAN BLVD, Jefferson, CO

Built 1991 Load: 44.0 t ADT: 25,844

RAMP TO SH 121 ML

Good

Over: CLEAR CREEK R

I70 WB TO SH121, Jefferson, CO

Built 1980 Load: 44.3 t ADT: 92,000

KENDALL BLVD

Good

Over: LOCAL DRAINAGE

.1 MI SO OF CANYON AVE, Jefferson, CO

Built 1981 Load: 44.7 t ADT: 1,608

WESTMINSTER BLVD

Good

Over: BIG DRY CREEK

0.5 MI S OF CHURCH RANCH, Jefferson, CO

Built 2002 Load: 44.7 t ADT: 4,300

WILLOW SPRINGS RD

Good

Over: TURKEY CREEK

.2 MI SOUTH OF US285, Jefferson, CO

Built 2001 Load: 45.1 t ADT: 1,497

38TH AVENUE

Good

Over: LENA GULCH

0.2 MI W OF KIPLING, Jefferson, CO

Built 1981 Load: 45.2 t ADT: 8,918

HARLAN CIRCLE

Good

Over: SANDERSON GULCH

0.1 MI NORTH OF JEWELL, Jefferson, CO

Built 2002 Load: 45.6 t ADT: 317

MCINTYRE STREET

Good

Over: FARMERS HIGHLINE CANAL

1.7 MI N OF 44TH AVE, Jefferson, CO

Built 2019 Load: 46.3 t ADT: 17,056

SH121 ML-WADSWORTH

Good

Over: BEAR CREEK

.8 MI. N. OF 285, Jefferson, CO

Built 2012 Load: 47.3 t ADT: 37,000

COUNTY ROAD 73

Good

Over: CUB CREEK

JUST SE OF SPILLWAY, Jefferson, CO

Built 2000 Load: 48.3 t ADT: 15,760

WESTCLIFF PKWY

Good

Over: BIG DRY CREEK

.2 MI SE OF CHURCH RANCH, Jefferson, CO

Built 1996 Load: 49.3 t ADT: 4,806

20TH AVENUE

Good

Over: LENA GULCH

INLET MAPLE GROVE RESERVR, Jefferson, CO

Built 1994 Load: 49.9 t ADT: 7,150

COUNTY ROAD 74

Good

Over: UPPER BEAR CREEK

.5MI W OF EVRGRN LAKE, Jefferson, CO

Built 2003 Load: 50.3 t ADT: 1,624

US 285 ML NBND

Good

Over: ELK CREEK ROAD

SHAFFERS CROSSING, Jefferson, CO

Built 2010 Load: 50.5 t ADT: 9,500

COUNTY ROAD 126

Good

Over: N FORK OF S PLATTE RIVER

NW TOWN OF BUFFALO CREEK, Jefferson, CO

Built 1997 Load: 51.2 t ADT: 1,415

US 285 ML SBND

Good

Over: ELK CREEK ROAD

SHAFFERS CROSSING, Jefferson, CO

Built 2010 Load: 51.8 t ADT: 9,500

I70 ML

Good

Over: 40TH AVE.

40th & Youngsfield, Jefferson, CO

Built 2009 Load: 51.9 t ADT: 104,000

SH 121 ML

Good

Over: MCINTIRE GULCH

.2 MI. N. OF 6TH AVE., Jefferson, CO

Built 2018 Load: 54.4 t ADT: 47,000

56TH AVENUE

Good

Over: RALSTON CREEK

0.01 MI SW OF RALSTON RD, Jefferson, CO

Built 2000 Load: 55.5 t ADT: 4,301

FORD STREET

Good

Over: CLEAR CREEK

0.58 MI NW OF 19TH STREET, Jefferson, CO

Built 1999 Load: 60.4 t ADT: 8,647

HOLLAND STREET

Good

Over: McINRYRE GULCH

0.5 MI N OF CEDAR AVE, Jefferson, CO

Built 2021 Load: 68.4 t ADT: 4,034

72ND AVENUE

Good

Over: PEDESTRIAN PATH

0.2 MI WEST OF CARR ST, Jefferson, CO

Built 2004 Load: 68.9 t ADT: 13,101

WATERTON ROAD

Good

Over: BRUSH CREEK

0.1 MI S OF SH 75, Jefferson, CO

Built 2019 Load: 70.6 t ADT: 11,043

KIPLING STREET

Good

Over: FARMERS HIGHLINE CANAL

.15 MI NORTH OF 72ND AVE, Jefferson, CO

Built 2001 Load: 70.8 t ADT: 15,571

SH 72 ML

Good

Over: COAL CREEK

5.7 MI NW OF JCT SH 93, Jefferson, CO

Built 2020 Load: 72.9 t ADT: 5,100

58TH AVENUE

Good

Over: RALSTON CREEK

JUST E OF LAMAR STREET, Jefferson, CO

Built 1996 Load: 74.9 t ADT: 10,681

SH 72 ML

Good

Over: COAL CREEK

5.6 MI W OF JCT SH 93, Jefferson, CO

Built 2020 Load: 80.7 t ADT: 5,100

SH 72 ML

Good

Over: COAL CREEK

4.6 MI W OF JCT SH 93, Jefferson, CO

Built 2020 Load: 80.7 t ADT: 5,100

SH 72 ML

Good

Over: COAL CREEK

3.4 MI W OF JCT SH 93, Jefferson, CO

Built 2020 Load: 80.7 t ADT: 5,100

KIPLING STREET

Good

Over: CROKE CANAL

.06 MI N OF W 72ND AVE, Jefferson, CO

Built 2002 Load: 88.5 t ADT: 15,571

SH 121 ML_WADS BLV

Good

Over: UNNAMED DRAINAGE

0.6 MI N OF JCT US6, Jefferson, CO

Built 2014 Load: 96.9 t ADT: 47,000

US 285 ML

Good

Over: WILD LIFE CROSSING

SCHAEFFERS CROSSING, Jefferson, CO

Built 2010 Load: 96.9 t ADT: 17,000

JOSEPH CIRCLE

Good

Over: TUCKER GULCH

1.5 BLOCKS SE OF HWY 93, Jefferson, CO

Built 2005 Load: 99.9 t ADT: 548

ENT TO CITY PARK

Good

Over: S. BRANCH HYLAND CREEK

JUST NORTH OF 104TH AVE, Jefferson, CO

Built 1998 Load: 99.9 t ADT: 919

NORTH AVENUE

Poor

Over: DRAINAGE

E. OF UNION BLVD., Jefferson, CO

Built 1942 Load: 18.1 t ADT: 1,100

US 40 ML

Poor

Over: BEAVER BROOK

Behind Floyd Hill, Jefferson, CO

Built 1937 Load: 20.7 t ADT: 480

OLDE WADSWORTH BLV

Poor

Over: RALSTON CREEK

0.2 MI NORTH OF 58TH AVE, Jefferson, CO

Built 1983 Load: 22.3 t ADT: 3,557

CENTER AVENUE

Poor

Over: DRAINAGE

W. OF KIPLING STREET, Jefferson, CO

Built 1942 Load: 22.7 t ADT: 1,100

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

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