US Bridges

County Road 56 over Larimer County Canal

Fair

Larimer County, Colorado · 0.9 MI E of CO RD 11 · Structure no. LR56-0.7-11

Built
1966
59 years old
Condition
Fair
inspected March 2025
Type
Tee Beam
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
168
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 56 over Larimer County Canal is a prestressed concrete tee beam carrying County Road 56 over Larimer County Canal in Larimer County, Colorado. It was built in 1966, so it is 59 years old, older 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 168 vehicles a day, roughly 9% of them trucks, projected to reach 210 by 2043. The structure is 29 ft (8.8 m) long and 24 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
Location0.9 MI E of CO RD 11
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.65367, -105.02236
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.7 US tons
Inventory rating18.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span26 ft (7.9 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic168 (2023)
Projected traffic210 by 2043
Trucks9%
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 1966, making it 59 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 168 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is County Road 56 over Larimer County Canal?

The structure is 29 ft (8.8 m) long with a longest span of 26 ft (7.9 m) and a deck 24 ft wide.

Who owns County Road 56 over Larimer County Canal?

It is owned by the County Highway Agency.