Larimer County, CO

559 public highway bridges

Larimer County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Larimer County, Colorado contains 559 public highway bridges. Roughly 47.4% are rated “Good,” 46.3% “Fair,” and 2% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

559
Total Bridges
47.4%
Good
46.3%
Fair
2%
Poor Condition

Condition Distribution

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

All Bridges (559)

Rossum Drive

Good

Over: Big Barnes Ditch

0.1 Mi South of US 34, Larimer, CO

Built 2002 Load: 33.7 t ADT: 1,371

County Road 103

Good

Over: Laramie River

15. Mi N of St Hwy 14, Larimer, CO

Built 1991 Load: 33.7 t ADT: 57

Namaqua Avenue

Good

Over: Big Thompson River

0.5 Mi N of W 1st St., Larimer, CO

Built 2019 Load: 33.7 t ADT: 5,082

CR 904/CR 13

Good

Over: Little Thompson River

0.2 Mi N of Co Rd 6C, Larimer, CO

Built 1988 Load: 33.7 t ADT: 3,225

Jasper Lake Road

Good

Over: Big Thompson River

0.1 Mi N of US Hwy 34, Larimer, CO

Built 2014 Load: 34.0 t ADT: 25

County Road 29

Good

Over: Dry Creek

100 Ft N of Co Rd 18E, Larimer, CO

Built 1986 Load: 34.1 t ADT: 3,219

I 25 ML SBND

Good

Over: BNSF RR

0.5 MI N OF JCT SH 14, Larimer, CO

Built 1966 Load: 34.3 t ADT: 19,000

US 34 ML EBND

Good

Over: LOVELAND-GREELEY CANAL

1.2 MI E OF JCT US 287, Larimer, CO

Built 1965 Load: 34.7 t ADT: 22,000

LaPorte Avenue

Good

Over: Larimer Co. Canal No. 2

Junction with Frey Avenue, Larimer, CO

Built 1989 Load: 34.7 t ADT: 4,980

Ronald Reagan Ave.

Good

Over: Boxelder Creek

West of 3rd Street, Larimer, CO

Built 2005 Load: 34.7 t ADT: 744

High Plains Road

Good

Over: Greeley Loveland Canal

0.1 Mi N of US Hwy 34, Larimer, CO

Built 1986 Load: 34.8 t ADT: 212

Strauss Cabin Road

Good

Over: Fossil Creek Res. Inlet

0.4 Mi S of Harmony Road, Larimer, CO

Built 2005 Load: 35.1 t ADT: 2,164

County Road 27

Good

Over: Buckhorn Creek

0.8 Mi NW of Co Rd 38E, Larimer, CO

Built 1993 Load: 35.1 t ADT: 806

County Road 45B

Good

Over: Little Thompson River

1.0 mile east 36, Larimer, CO

Built 2015 Load: 35.3 t ADT: 122

US 34 ML WBND

Good

Over: LOVELAND-GREELEY CANAL

3 MI W OF JCT I 25, Larimer, CO

Built 1965 Load: 35.4 t ADT: 22,000

I 25 ML SBND

Good

Over: RR SPUR

2.9 MI S OF JCT SH 14, Larimer, CO

Built 2023 Load: 35.6 t ADT: 24,500

US 34 ML

Good

Over: BIG THOMPSON RIVER

_, Larimer, CO

Built 2018 Load: 35.6 t ADT: 4,900

I 25 ML

Good

Over: HILLSBORO TRIBUTARY

1.6 MI NO OF JCT SH 60, Larimer, CO

Built 2020 Load: 35.6 t ADT: 86,000

Horsetooth Road

Good

Over: Larimer Co Canal No. 2

50 ft W of College Ave, Larimer, CO

Built 2018 Load: 35.6 t ADT: 21,245

County Road 15

Good

Over: Little Thompson River

0.9 Mi N of Co Rd 4, Larimer, CO

Built 2018 Load: 35.6 t ADT: 1,452

County Road 18

Good

Over: Handy Ditch

0.4 Mi E of Co Rd 23E, Larimer, CO

Built 2017 Load: 35.6 t ADT: 1,397

County Rd 43

Good

Over: N. Fork Big Thompson

0.3 MI E of Horseshoe Rd, Larimer, CO

Built 2016 Load: 35.6 t ADT: 415

County Rd 43

Good

Over: N. Fork Big Thompson

1.3 MI E of Horseshoe Rd, Larimer, CO

Built 2016 Load: 35.6 t ADT: 415

Prospect Road

Good

Over: Cache La Poudre Overflow

0.7 Mi. E of Sharp Point, Larimer, CO

Built 2006 Load: 36.1 t ADT: 22,557

County Road 80C

Good

Over: Laramie River

0.3 Mi W of Co Rd 103, Larimer, CO

Built 1999 Load: 36.2 t ADT: 13

SPRAGUE LAKE ROAD

Good

Over: GLACIER CREEK

0.2 miles from Bear Lake, Larimer, CO

Built 2004 Load: 36.3 t ADT: 500

County Road 54

Good

Over: Box Elder Creek

0.5 Mi East of I-25, Larimer, CO

Built 1993 Load: 36.3 t ADT: 98

Piney River Drive

Good

Over: Greeley Loveland Canal

0.1 Mi N of McWhinney Blv, Larimer, CO

Built 2000 Load: 36.5 t ADT: 1,319

Co Rd 20(W 1st St)

Good

Over: Big Thompson River

0.5 Mi E of Taft Avenue, Larimer, CO

Built 2001 Load: 36.8 t ADT: 4,384

County Road 23

Good

Over: Dry Creek

0.6 Mi N of Co Rd 6, Larimer, CO

Built 1988 Load: 37.7 t ADT: 2,798

7th Street(CR 20D)

Good

Over: Greeley Loveland Canal

0.1 M W. Mad. Ave. -CR 13, Larimer, CO

Built 1986 Load: 37.8 t ADT: 2,645

County Road 56

Good

Over: Box Elder Creek

1.0 Mi. East of I-25, Larimer, CO

Built 1997 Load: 38.0 t ADT: 221

I 25 ML SBND

Good

Over: BIG THOMPSON RIVER

0.7 MI SO OF JCT US 34, Larimer, CO

Built 2022 Load: 38.9 t ADT: 34,000

I 25 ML NBND

Good

Over: BIG THOMPSON RIVER

1.3 MI N OF JCT SH 402, Larimer, CO

Built 2021 Load: 38.9 t ADT: 34,000

I 25 SERVICE RD

Good

Over: BIG THOMPSON RIVER SR

1.3 MI N OF JCT SH 402, Larimer, CO

Built 2020 Load: 38.9 t ADT: 3,911

County Rd 25E

Good

Over: Redstone Creek

0.4 MI N of Swanson R. Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 138

County Rd 25E

Good

Over: Redstone Creek

0.5 MI S of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 99

County Rd 25E

Good

Over: Redstone Creek

0.2 MI N of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 99

County Rd 25E

Good

Over: Redstone Creek

Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 68

County Rd 25E

Good

Over: Redstone Creek

0.2 MI N of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 44

County Rd 25E

Good

Over: Redstone Creek

0.9 MI N of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 18

County Rd 25E

Good

Over: Redstone Creek

1.5 MI N of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 14

County Rd 43

Good

Over: N. Fork Big Thompson

2.0 MI E of Horseshoe Rd, Larimer, CO

Built 2016 Load: 38.9 t ADT: 585

Waltonia Road

Good

Over: Big Thompson River

20 ft S of US 34, Larimer, CO

Built 2018 Load: 38.9 t ADT: 107

I 25 ML SBND

Good

Over: COUNTY ROAD 16

1.1 MI SO OF JCT SH 402, Larimer, CO

Built 2023 Load: 39.2 t ADT: 86,000

County Road 9E

Good

Over: Big Thompson River

0.4 Mi N of St Hwy 402, Larimer, CO

Built 1988 Load: 39.3 t ADT: 5,310

County Road 17

Good

Over: Home Supply Ditch

1.3 Mi W of Campion, Larimer, CO

Built 2005 Load: 39.3 t ADT: 21,143

West First Street

Good

Over: Greeley Loveland Canal

180 W First Street, Larimer, CO

Built 2023 Load: 39.5 t ADT: 9,792

County Road 25E

Good

Over: Redstone Creek

3.9 Mi N of Co Rd 24H, Larimer, CO

Built 1990 Load: 39.6 t ADT: 788

West 8th Street

Good

Over: Big Barnes Ditch

0.3 Mi W of Taft Avenue, Larimer, CO

Built 2020 Load: 39.9 t ADT: 3,983

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.