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)

County Road 48

Fair

Over: Pleas. Valley Lake Canal

0.1 Mi W of Co Rd 21, Larimer, CO

Built 1993 Load: 52.4 t ADT: 231

WB Harmony Road

Fair

Over: Fossil Crk. Res. Inlet

0.7 Mi. W of Jct I 25, Larimer, CO

Built 1973 Load: 54.2 t ADT: 25,324

Common Street

Fair

Over: Trib to Dry Creek

30 Ft. S of Welch Ave., Larimer, CO

Built 1999 Load: 54.6 t ADT: 522

County Road 3

Fair

Over: Larimer and Weld Canal

0.5 Mi N of Co Rd 44, Larimer, CO

Built 1960 Load: 55.2 t ADT: 412

US 287 ML

Fair

Over: LARIMER COUNTY CANAL

0.8 MI S OF JCT SH 14, Larimer, CO

Built 1991 Load: 55.6 t ADT: 8,900

County Road 3

Fair

Over: Poudre Valley Canal

0.2 Mi N of Co Rd 62, Larimer, CO

Built 1962 Load: 57.3 t ADT: 187

County Road 51B

Fair

Over: N Fork Big Thompson Riv.

50 Ft N of Co Rd 43, Larimer, CO

Built 1977 Load: 58.0 t ADT: 293

Mountain Vista Dr

Fair

Over: Brewery Drainage Pond

0.27 MI W of I-25, Larimer, CO

Built 1987 Load: 58.3 t ADT: 5,552

Kechter Road

Fair

Over: McClellands Channel

200 Ft. E Lady Moon Dr., Larimer, CO

Built 2002 Load: 60.1 t ADT: 9,116

SH 14 ML

Fair

Over: DRY CREEK

MULBERRY andTIMBERLINE RD, Larimer, CO

Built 1999 Load: 60.5 t ADT: 33,000

I 25 ML

Fair

Over: LAKE CANAL

11.3 MI N OF JCT SH 34, Larimer, CO

Built 1966 Load: 62.6 t ADT: 55,000

I 25 ML

Fair

Over: CACHE LA POUDRE DITCH

11.3 MI N OF JCT US 34, Larimer, CO

Built 1966 Load: 63.2 t ADT: 55,000

Timberline Road

Fair

Over: Spring Creek

100 Ft S of Prospect Rd., Larimer, CO

Built 1986 Load: 66.6 t ADT: 36,342

I 25 ML+SERVICE RD

Fair

Over: BOX ELDER CREEK

5.1 MI N OF JCT SH 14, Larimer, CO

Built 1989 Load: 66.8 t ADT: 28,000

US 287 ML

Fair

Over: LAKE DITCH

0.4 MI N of SH60, Larimer, CO

Built 2005 Load: 81.0 t ADT: 20,000

County Road 23E

Fair

Over: Handy Ditch

0.3 Mi N of Co Rd 18, Larimer, CO

Built 1983 Load: 81.0 t ADT: 1,075

County Road 21C

Fair

Over: Jackson Ditch

0.4 Mi N of Co Rd 54G, Larimer, CO

Built 1986 Load: 82.0 t ADT: 772

Boardwalk Drive

Fair

Over: Larimer Co. Canal No. 2

50 Ft N of Troutman Pkwy, Larimer, CO

Built 1982 Load: 84.5 t ADT: 7,952

US 287 ML

Fair

Over: HANDY DITCH

1 MI. N. OF CO RD 8, Larimer, CO

Built 2003 Load: 89.1 t ADT: 18,000

US 287 ML

Fair

Over: DRAW

0.1 Mi South of 37th St, Larimer, CO

Built 1924 Load: 89.8 t ADT: 29,000

County Road 21C

Fair

Over: Larimer Co. Canal No. 2

0.3 Mi N of Co Rd 50, Larimer, CO

Built 1983 Load: 91.2 t ADT: 4,081

County Road 21C

Fair

Over: New Mercer Canal

0.2 Mi N of Co Rd 50, Larimer, CO

Built 1983 Load: 93.9 t ADT: 4,081

County Road 20

Fair

Over: Dry Creek

0.3 Mi E of Co Rd 29, Larimer, CO

Built 1982 Load: 96.9 t ADT: 2,122

County Road 72

Fair

Over: Park Creek

3.4 Mi E of SH287, Larimer, CO

Built 2014 Load: 96.9 t ADT: 4,435

I25 ML+FRONTAGE RD

Fair

Over: WINDSOR RES, CANAL

0.4 MI N OF JCT SH1, Larimer, CO

Built 1989 Load: 99.9 t ADT: 25,000

US 34 ML

Fair

Over: BUCKINGHAM DITCH

2 MI WEST OF LOVELAND, Larimer, CO

Built 1997 Load: 99.9 t ADT: 8,300

US 34 ML

Fair

Over: DRAW

AT W. END OF LOVELAND, Larimer, CO

Built 1998 Load: 99.9 t ADT: 8,300

Landing Drive

Fair

Over: Larimer Co. Canal No. 2

0.1 Mi N of Boardwalk Dr, Larimer, CO

Built 1982 Load: 99.9 t ADT: 2,208

Taft Avenue

Fair

Over: Greeley Loveland Canal

0.4 Mi N of First St, Larimer, CO

Built 1980 Load: 99.9 t ADT: 21,527

County Road 15

Fair

Over: Poudre Valley Canal

1.0 Mi N of Co Rd 60, Larimer, CO

Built 1987 Load: 99.9 t ADT: 1,784

County Road 29

Fair

Over: Green Ridge Glade Reser.

0.3 Mi N of Co Rd 22H, Larimer, CO

Built 2004 Load: 99.9 t ADT: 145

County Road 30

Fair

Over: Louden Ditch

0.2 Mi E of US Hwy 287, Larimer, CO

Built 1979 Load: 99.9 t ADT: 1,036

County Road 70

Fair

Over: Coal Creek

0.9 Mi E of Co Rd 9, Larimer, CO

Built 1995 Load: 99.9 t ADT: 6,026

E Suniga Road

Good

Over: Lake Canal

500 Feet E of Redwood St, Larimer, CO

Built 2023 Load: 7.1 t ADT: 1,623

US 34 ML

Good

Over: BIG THOMPSON RIVER

6.5 MI E OF ESTES PARK, Larimer, CO

Built 2003 Load: 9.7 t ADT: 5,800

FDR 305

Good

Over: CACHE LA POUDRE RIVER

N CO HWY 14 W POUDRE PARK, Larimer, CO

Built 2004 Load: 12.6 t ADT: 30

County Road 64

Good

Over: Poudre Valley Canal

0.9 Mi. E. of Co. Rd. 11, Larimer, CO

Built 2003 Load: 14.2 t ADT: 1,565

SH 1 ML

Good

Over: BOX ELDER CREEK

IN WELLINGTON, Larimer, CO

Built 1968 Load: 15.7 t ADT: 5,200

SH 14 ML

Good

Over: LAKE CANAL

0.85 MI W OF JCT I-25, Larimer, CO

Built 1948 Load: 16.4 t ADT: 32,000

Brown Trout Lane

Good

Over: Big Thompson River

0.2 Mi S of US Hwy 34, Larimer, CO

Built 1977 Load: 16.9 t ADT: 2

Access Road

Good

Over: Big Thompson River

60 Ft N of US Hwy 34, Larimer, CO

Built 1977 Load: 16.9 t ADT: 25

Deer Meadow Drive

Good

Over: Dry Creek

.7 MI W of Rossum Drive, Larimer, CO

Built 2008 Load: 17.4 t ADT: 108

Mountain Shadow Ln

Good

Over: Big Thompson River

25 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 5

Elk Island Way

Good

Over: Big Thompson River

25 Ft N of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 34

Woody Creek Lane

Good

Over: Larimer County Canal

100 FT W of CO-1, Larimer, CO

Built 2016 Load: 18.7 t ADT: 85

County Road 27

Good

Over: Buckhorn Creek

6.1 Mi NW of CR38E, Larimer, CO

Built 2015 Load: 19.4 t ADT: 624

County Road 27

Good

Over: Buckhorn Creek

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

Built 2015 Load: 20.1 t ADT: 682

US 34 ML

Good

Over: BIG THOMPSON RIVER

1 MI W OF LOVELAND, Larimer, CO

Built 1992 Load: 20.5 t ADT: 8,300

Welch Street

Good

Over: Spring Creek

0.2 Mi N of Stuart St, Larimer, CO

Built 1999 Load: 21.3 t ADT: 398

County Road 1

Good

Over: Greeley Loveland Canal

0.1 Mi N of US Hwy 34, Larimer, CO

Built 1990 Load: 21.7 t ADT: 8,491

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