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)

Sort:

SH 93 ML

Over: AGGREGATE ROAD

3 MI NO OF JCT SH 72, Jefferson, CO

Built 1999 Load: 40.8 t ADT: 16,000

SH 470 ML WBND

Over: DUTCH CREEK

.5 MI S. OF BOWLES, Jefferson, CO

Built 1988 Load: 42.0 t ADT: 29,000

I70 ML

Over: Light Rail

JUST N OF 6TH AVENUE, Jefferson, CO

Built 2010 Load: 42.1 t ADT: 106,000

EATON ST

Over: SLOANS LAKE DRAINAGE

.1 MI S OF 18TH AVE, Jefferson, CO

Built 1982 Load: 42.4 t ADT: 753

WELCH AVENUE

Over: BEAR CREEK

S OF HWY 74 IN KITTREDGE, Jefferson, CO

Built 1988 Load: 43.2 t ADT: 537

RAMP TO I 70 EBND

Over: CLEAR CREEK, BP R

RAMP FROM SH121 TO EB I70, Jefferson, CO

Built 1981 Load: 43.5 t ADT: 46,000

SH 121 ML

Over: RALSTON CREEK

JUST N. OF RALSTON RD, Jefferson, CO

Built 1996 Load: 46.0 t ADT: 41,000

MCINTYRE ST

Over: FARMERS HIGHLINE CANAL

MCINTYRE/67TH/LUPINE CIR, Jefferson, CO

Built 1994 Load: 46.3 t ADT: 223

COUNTY ROAD 73

Over: BEAR CREEK

AT JCT W/ HWY 74, Jefferson, CO

Built 2003 Load: 46.3 t ADT: 15,760

SH 58 ML

Over: CO.RD,RR SPUR

EAST OF GOLDEN, Jefferson, CO

Built 2010 Load: 46.7 t ADT: 19,000

COUNTY ROAD 126

Over: SOUTH PLATTE RIVER

AT THE TOWN OF DECKERS, Jefferson, CO

Built 1997 Load: 46.9 t ADT: 944

MILLER STREET

Over: LENA GULCH

JUST SOUTH OF 38TH AVE, Jefferson, CO

Built 1981 Load: 47.9 t ADT: 243

SH 72 ML

Over: COAL CREEK

2.3 MI W OF JCT SH 93, Jefferson, CO

Built 1939 Load: 48.6 t ADT: 5,100

PARFET STREET

Over: LENA GULCH

.7 MI N OF 32ND AVENUE, Jefferson, CO

Built 1986 Load: 48.8 t ADT: 746

ALKIRE STREET

Over: CROKE CANAL

0.8 MI N OF 72ND AVE, Jefferson, CO

Built 1992 Load: 49.2 t ADT: 4,326

SIMMS STREET

Over: LEYDEN CREEK

0.15 MI S. OF 72ND AVE, Jefferson, CO

Built 2007 Load: 49.4 t ADT: 10,304

DEPEW ST

Over: SLOANS LAKE DRAINAGE

JUST S OF 18TH AVENUE, Jefferson, CO

Built 1982 Load: 50.3 t ADT: 2,639

HARLAN CIRCLE

Over: SANDERSON GULCH

0.05 MI NORTH OF JEWELL, Jefferson, CO

Built 2002 Load: 50.8 t ADT: 245

COUNTY ROAD 74

Over: UPPER BEAR CREEK

1.4 MI W JCT EVRGN LAKE, Jefferson, CO

Built 1992 Load: 51.3 t ADT: 1,436

SHADY LANE

Over: BEAR CREEK

IN IDLEDALE, Jefferson, CO

Built 1987 Load: 51.6 t ADT: 117

NEWCOMBE COURT

Over: VAN BIBBER CREEK

JUST NORTH OF 58TH AVE, Jefferson, CO

Built 1979 Load: 52.1 t ADT: 379

SH 95 ML

Over: LAKEWOOD GULCH

IN LAKEWOOD, Jefferson, CO

Built 1955 Load: 52.6 t ADT: 33,000

MCINTYRE STREET

Over: FARMERS HIGHLINE CANAL

1.6 MI N OF 44TH AVE, Jefferson, CO

Built 2019 Load: 53.1 t ADT: 17,056

US 285 ML

Over: TURKEY CREEK

BELOW 285 & C470 INTE, Jefferson, CO

Built 1968 Load: 54.2 t ADT: 39,000

92ND AVENUE

Over: FARMERS HIGHLINE CANAL

0.2 MI W OF PIERCE ST, Jefferson, CO

Built 1985 Load: 54.3 t ADT: 10,995

58TH AVENUE

Over: VAN BIBBER CREEK

AT INTERSECTION OF NELSON, Jefferson, CO

Built 1979 Load: 55.1 t ADT: 14,687

58TH AVENUE

Over: VAN BIBBER CREEK

JUST WEST OF KIPLING PKWY, Jefferson, CO

Built 1979 Load: 55.2 t ADT: 14,429

SIMMS STREET

Over: FARMERS HIGHLINE CANAL

1.56 MI N OF 64TH AVE, Jefferson, CO

Built 1987 Load: 55.4 t ADT: 12,247

SH 391 ML

Over: LENA GULCH

N SIDE OF 39TH AVE, Jefferson, CO

Built 1981 Load: 56.2 t ADT: 37,000

RAMP TO SH 470 EBD

Over: ROONEY RD

0.04 MI E - JCT SH 470 +, Jefferson, CO

Built 1987 Load: 58.7 t ADT: 35,000

SH 121 ML

Over: BURNS DRAW

3.4 MI S OF JCT SH 470, Jefferson, CO

Built 1968 Load: 62.8 t ADT: 22,000

72ND AVENUE

Over: FARMERS HIGHLINE CANAL

0.5 MI WEST OF INDIANA ST, Jefferson, CO

Built 1995 Load: 63.7 t ADT: 6,062

US6RMP &UNIONB

Over: LIGHT RAIL

UNION BLVD S OF 6TH/US 6, Jefferson, CO

Built 2010 Load: 64.8 t ADT: 63,000

SIMMS STREET

Over: CROKE CANAL

1.50 MI NORTH OF 64TH AVE, Jefferson, CO

Built 1995 Load: 69.4 t ADT: 12,247

SH 121 ML

Over: HIGHLINE CANAL

South of 92ND AVE., Jefferson, CO

Built 1968 Load: 81.6 t ADT: 43,000

SH 58 ML

Over: CROKE CANAL

EAST OF GOLDEN, Jefferson, CO

Built 1970 Load: 89.8 t ADT: 19,000

SH 93 ML

Over: TUCKER GULCH

1 MI NO OF JCT SH 58, Jefferson, CO

Built 1996 Load: 89.8 t ADT: 24,000

SH 74 ML

Over: SAWMILL GULCH

IN IDLEDALE, Jefferson, CO

Built 1999 Load: 89.8 t ADT: 3,300

US 285 ML

Over: NORTH TURKEY CREEK

6 MI W OF C470, Jefferson, CO

Built 1948 Load: 89.8 t ADT: 26,000

US 6 ML

Over: DRAW

1 Mi W of SH470, Jefferson, CO

Built 1951 Load: 89.8 t ADT: 32,000

SH 74 ML

Over: GAME CROSSING

NEAR BERGEN PARK, Jefferson, CO

Built 1996 Load: 90.8 t ADT: 18,000

EL DIENTE ST

Over: VAN BIBBER CREEK

0.1 M N OF 58TH AVENUE, Jefferson, CO

Built 1999 Load: 94.9 t ADT: 908

58TH AVE AND IND

Over: VAN BIBBER CREEK

.10 MI W OF INDEPENDENCE, Jefferson, CO

Built 2006 Load: 99.9 t ADT: 21,216

64TH PARKWAY

Over: S BLDR DIVERSION CANAL

0.3 MI EAST OF SH 93, Jefferson, CO

Built 2000 Load: 99.9 t ADT: 6,792

64TH AVENUE

Over: LOCAL DRAINAGE

1.1 MI EAST OF SH 93, Jefferson, CO

Built 2000 Load: 99.9 t ADT: 183

HARLAN STREET

Over: LITTLE DRY CREEK

0.2 MI SOUTH OF 80TH AVE, Jefferson, CO

Built 1970 Load: 99.9 t ADT: 2,165

SH 58 ML

Over: ARAPAHOE DITCH

1.6 MI E OF JCT SH 93, Jefferson, CO

Built 1970 Load: 99.9 t ADT: 19,000

SH 93 ML

Over: LEYDEN GULCH

6.3 MILES N. SH 58, Jefferson, CO

Built 1999 Load: 99.9 t ADT: 17,000

SH 93 ML

Over: RALSTON RESERVOIR OVRFLW

5.3 MI N OF JCT SH 58, Jefferson, CO

Built 1984 Load: 99.9 t ADT: 19,000

SH 8 ML

Over: DRAW

IN MORRISON, Jefferson, CO

Built 1934 Load: 99.9 t ADT: 4,000

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026