US Bridges

County Road 56 over Larimer County Canal

Fair

Larimer County, Colorado · 0.3 MI E of CO RD 11 · Structure no. LR56-0.3-11-A

Built
1999
26 years old
Condition
Fair
inspected March 2025
Type
Frame
Concrete
Length
32 ft
1 main span
Daily traffic
112
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 56 over Larimer County Canal is a concrete frame carrying County Road 56 over Larimer County Canal in Larimer County, Colorado. It was built in 1999, so it is 26 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 112 vehicles a day, roughly 13% of them trucks, projected to reach 140 by 2043. The structure is 32 ft (9.8 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 56
CrossesLarimer County Canal
Location0.3 MI E of CO RD 11
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.65375, -105.02947
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36.8 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2023)
Projected traffic140 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 56 over Larimer County Canal built?

It was built in 1999, making it 26 years old in 2025.

What condition is County Road 56 over Larimer County Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2025.

How much traffic does County Road 56 over Larimer County Canal carry?

About 112 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is County Road 56 over Larimer County Canal?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 41 ft wide.

Who owns County Road 56 over Larimer County Canal?

It is owned by the County Highway Agency.