US Bridges

County Road 15 over Larimer County Canal

Good

Weld County, Colorado · 0.5 MI N of SH 14 · Structure no. WEL015.0_082.0A

Built
2004
21 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
1,364
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 15 over Larimer County Canal is a steel stringer/multi-beam or girder carrying County Road 15 over Larimer County Canal in Weld County, Colorado. It was built in 2004, so it is 21 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,364 vehicles a day, roughly 17% of them trucks, projected to reach 1,936 by 2043. The structure is 50 ft (15.2 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 15
CrossesLarimer County Canal
Location0.5 MI N of SH 14
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.58913, -104.92672
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span47 ft (14.3 m)
Deck width36 ft (11 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,364 (2023)
Projected traffic1,936 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 15 over Larimer County Canal built?

It was built in 2004, making it 21 years old in 2025.

What condition is County Road 15 over Larimer County Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does County Road 15 over Larimer County Canal carry?

About 1,364 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is County Road 15 over Larimer County Canal?

The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.3 m) and a deck 36 ft wide.

Who owns County Road 15 over Larimer County Canal?

It is owned by the County Highway Agency.