Larimer County, CO

559 public highway bridges

Larimer County Bridge Snapshot

Larimer County, Colorado contains 559 public highway bridges in the FHWA National Bridge Inventory. Roughly 47.4% are rated “Good,” 46.3% “Fair,” 2% “Poor,” and 2% 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.

559
Total Bridges
47.4%
Good
2%
Poor
2%
Structurally Deficient

Condition Distribution

Good
47.4% (265)
Fair
46.3% (259)
Poor
2% (11)
SD
2% (11)

All Bridges (559)

I 25 ML SBND

Unknown

Over: CO.RD 82 BUCKEYE ROAD

11.3 MI SOUTH OF WYOMING, Larimer, CO

Built 1963 ADT: 546

I 25 ML NBND

Unknown

Over: CO.RD 82 BUCKEYE ROAD

10 MI N OF WELLINGTON, Larimer, CO

Built 1963 ADT: 546

I 25 ML NBND

Unknown

Over: FRONTAGE ROAD

9.9 MI S OF WYOMING S.L., Larimer, CO

Built 1963 ADT: 110

I 25 ML SBND

Unknown

Over: FRONTAGE ROAD

9.9 MI S OF WYOMING S.L., Larimer, CO

Built 1963 ADT: 110

I 25 ML NBND

Unknown

Over: FRONTAGE ROAD

8.6 MI S OF WYOMING S.L., Larimer, CO

Built 1963 ADT: 110

I 25 ML SBND

Unknown

Over: FRONTAGE ROAD

8.7 MI S OF WYOMING S.L., Larimer, CO

Built 1963 ADT: 110

I 25 ML NBND

Unknown

Over: FRONTAGE ROAD

7.6 MI S OF WYOMING S.L., Larimer, CO

Built 1963 ADT: 110

I 25 ML SBND

Unknown

Over: FRONTAGE ROAD

7.5 MI S OF WYOMING S.L., Larimer, CO

Built 1963 ADT: 110

COUNTY ROAD 70

Unknown

Over: I 25 ML

12 MI NORTH OF JCT SH 14, Larimer, CO

Built 1967 ADT: 2,149

PROSPECT ROAD

Unknown

Over: I 25 ML

PROSPECT RD/I25, Larimer, CO

Built 2021 ADT: 11,882

SH 14 ML EBND

Unknown

Over: I 25 ML

I-25/MULBERRY INTERCHANGE, Larimer, CO

Built 1966 ADT: 52,000

SH 14 ML WBND

Unknown

Over: I 25 ML

I-25 MULBERRY INTERCHANGE, Larimer, CO

Built 1966 ADT: 52,000

COUNTY ROAD 52

Unknown

Over: I 25 ML and FRONTAGE RD

3 MI N OF SH 14, Larimer, CO

Built 1966 ADT: 541

COUNTY ROAD 58

Unknown

Over: I 25 ML and FRONTAGE RD

2.5 MI S OF SH 1, Larimer, CO

Built 1966 ADT: 34,000

SH 1 ML

Unknown

Over: I 25 ML

I-25 WELLINGTON INTER., Larimer, CO

Built 1966 ADT: 26,000

MOUNTAIN VISTA RD

Unknown

Over: I 25 ML

AT MP 271.342, Larimer, CO

Built 1985 ADT: 5,059

COUNTY ROAD 48

Unknown

Over: I 25 ML

MILE MRKR 270.314, Larimer, CO

Built 2018 ADT: 4,556

COUNTY ROAD 66

Unknown

Over: I 25 ML

1.5 MI N OF SH 1, Larimer, CO

Built 1967 ADT: 25,000

HARMONY RD/OLDSH68

Unknown

Over: I 25 ML

HARMONY RD/I25, Larimer, CO

Built 1999 ADT: 33,881

KECHTER RD

Unknown

Over: I 25 ML

2 MI N OF SH 392, Larimer, CO

Built 2022 ADT: 3,120

COUNTY RD. 10E

Unknown

Over: US 287 ML

NEAR BERTHOUD, Larimer, CO

Built 2004 ADT: 123

US 34 ML

Unknown

Over: I 25 ML

I-25 LOVELAND INTERCH., Larimer, CO

Built 2022 ADT: 19,500

COUNTY ROAD 20E

Unknown

Over: I 25 ML

1.5 MI NO OF JCT SH 402, Larimer, CO

Built 2021 ADT: 76,000

SH 392 ML

Unknown

Over: I 25 ML

I-25/WINDSOR INTERCHANGE, Larimer, CO

Built 2012 ADT: 68,000

County Road 21

Fair

Over: Little Thompson River

0.7 Mi N of S County Line, Larimer, CO

Built 1970 Load: 8.3 t ADT: 1,985

County Road 43H

Fair

Over: Little Thompson River

0.1 Mi N of Co Rd 45B, Larimer, CO

Built 1960 Load: 10.3 t ADT: 97

Taft Hill Rd(Cr17)

Fair

Over: Big Thompson River

0.2 Mi N of 1st Street, Larimer, CO

Built 1978 Load: 10.7 t ADT: 21,217

County Road 80C

Fair

Over: N Frk Cache La Poudre Rv

2.6 Mi W of Co Rd 59, Larimer, CO

Built 1965 Load: 11.1 t ADT: 118

County Road 15

Fair

Over: Boxelder Creek

0.8 Mi N of Co Rd 78, Larimer, CO

Built 1980 Load: 13.0 t ADT: 365

County Road 82

Fair

Over: Rawhide Creek

0.2 Mi E of Co Rd 15, Larimer, CO

Built 1980 Load: 13.0 t ADT: 363

County Road 21C

Fair

Over: Cache La Poudre River

0.2 Mi N of Co Rd 50E, Larimer, CO

Built 1976 Load: 13.2 t ADT: 3,333

BEAR LAKE ROAD

Fair

Over: BIG THOMPSON RIVER

1.9 MILES SOUTH OF BEAVER, Larimer, CO

Built 1960 Load: 14.5 t ADT: 2,500

County Road 82

Fair

Over: Coal Creek

0.3 Mi E of Co Rd 7, Larimer, CO

Built 1980 Load: 14.9 t ADT: 665

County Road 56

Fair

Over: Larimer County Canal

0.9 Mi E of Co Rd 11, Larimer, CO

Built 1966 Load: 16.4 t ADT: 168

County Road 76H

Fair

Over: N Frk Cache La Poudre Rv

1.0 Mi E of Co Rd 37, Larimer, CO

Built 1970 Load: 16.4 t ADT: 47

County Road 63E

Fair

Over: Cache La Poudre River

75 Ft S of St Hwy 14, Larimer, CO

Built 1934 Load: 16.6 t ADT: 240

Rainbow Trout LN

Fair

Over: Big Thompson River

25 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 16.9 t ADT: 18

Cedar Cove Road

Fair

Over: Big Thompson River

0.2 Mi N of US Hwy 34, Larimer, CO

Built 1977 Load: 16.9 t ADT: 27

County Road 37

Fair

Over: Lone Pine Creek

0.2 Mi N of Co Rd 74E, Larimer, CO

Built 1981 Load: 17.1 t ADT: 96

WCR 3 LCR 1

Fair

Over: Cache La Poudre River

0.4 Mi S of St Hwy 392, Larimer, CO

Built 1977 Load: 17.1 t ADT: 11,943

US 287 ACCESS

Fair

Over: LOUDEN CANAL

3.5 MI N OF JCT US 34, Larimer, CO

Built 1950 Load: 17.5 t ADT: 52

River Rim Road

Fair

Over: Big Thompson River

20 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 380

Rocky River Road

Fair

Over: Big Thompson River

40 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 1

Rose Hall Way

Fair

Over: Big Thompson River

35 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 11

US 287 ML

Fair

Over: LARIMER-WELD CANAL

0.2 MI S of SH1, Larimer, CO

Built 1949 Load: 17.6 t ADT: 24,000

County Road 52

Fair

Over: Larimer & Weld Canal

1.2 Mi East of I-25, Larimer, CO

Built 1975 Load: 17.7 t ADT: 706

HCL+PGL BRT Guide

Fair

Over: Mail Creek

100 ft S of W Co. Rd 38, Larimer, CO

Built 2019 Load: 17.8 t ADT: 295

Mountain River Rd

Fair

Over: Little Thompson River

50 ft S of W CR 4, Larimer, CO

Built 1936 Load: 18.4 t ADT: 42

FDR 155

Fair

Over: CACHE LA POUDRE RIVER

50 FT SOUTH OF CO HWY 114, Larimer, CO

Built 1937 Load: 18.8 t ADT: 100

County Road 9

Fair

Over: North Poudre Canal

1.5 Mi N of Co Rd 70, Larimer, CO

Built 1980 Load: 18.8 t ADT: 888

Related

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