US Bridges

County Road 56 over Larimer County Canal

Good

Larimer County, Colorado · 0.6 MI E of CO RD 11 · Structure no. LR56-0.6-11-A

Built
2004
21 years old
Condition
Good
inspected March 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 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 prestressed concrete stringer/multi-beam or girder carrying County Road 56 over Larimer County Canal in Larimer 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 112 vehicles a day, roughly 15% of them trucks, projected to reach 140 by 2043. The structure is 75 ft (23 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 56
CrossesLarimer County Canal
Location0.6 MI E of CO RD 11
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.65372, -105.02556
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.4 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length75 ft (23 m)
Longest span69 ft (21.1 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2023)
Projected traffic140 by 2043
Trucks15%
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 2004, making it 21 years old in 2025.

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

About 112 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is County Road 56 over Larimer County Canal?

The structure is 75 ft (23 m) long with a longest span of 69 ft (21.1 m) and a deck 39 ft wide.

Who owns County Road 56 over Larimer County Canal?

It is owned by the County Highway Agency.