US Bridges

County Road 11 over Larimer County Canal

Good

Larimer County, Colorado · 1.1 MI N of CO RD 54 · Structure no. LR11-1.1-54-A

Built
1962
63 years old, rebuilt 2005
Condition
Good
inspected March 2025
Type
Tee Beam
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
88
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 11 over Larimer County Canal is a prestressed concrete tee beam carrying County Road 11 over Larimer County Canal in Larimer County, Colorado. It was built in 1962 and reconstructed in 2005, so it is 63 years old, older 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 88 vehicles a day, roughly 13% of them trucks, projected to reach 110 by 2043. The structure is 33 ft (10 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Road 11
CrossesLarimer County Canal
Location1.1 MI N of CO RD 54
RouteCounty Highway 0
Coordinates40.65236, -105.03575
Functional classUrban 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 inspectionMarch 2025
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 rating84.9 US tons
Inventory rating50.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88 (2023)
Projected traffic110 by 2043
Trucks13%
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 11 over Larimer County Canal built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2005.

What condition is County Road 11 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 March 2025.

How much traffic does County Road 11 over Larimer County Canal carry?

About 88 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is County Road 11 over Larimer County Canal?

The structure is 33 ft (10 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns County Road 11 over Larimer County Canal?

It is owned by the County Highway Agency.