US Bridges

County Road 15 over Poudre Valley Canal

Fair

Larimer County, Colorado · 1.0 MI N of CO RD 60 · Structure no. LR15-1.0-60-A

Built
1987
38 years old
Condition
Fair
inspected February 2025
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
1,784
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 15 over Poudre Valley Canal is a steel culvert carrying County Road 15 over Poudre Valley Canal in Larimer County, Colorado. It was built in 1987, so it is 38 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 1,784 vehicles a day, roughly 23% of them trucks, projected to reach 2,230 by 2043. The structure is 21 ft (6.3 m) long and 132 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 15
CrossesPoudre Valley Canal
Location1.0 MI N of CO RD 60
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.69667, -105.06833
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span21 ft (6.3 m)
Deck width132 ft (40.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,784 (2023)
Projected traffic2,230 by 2043
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Poudre Valley Canal built?

It was built in 1987, making it 38 years old in 2025.

What condition is County Road 15 over Poudre Valley 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 February 2025.

How much traffic does County Road 15 over Poudre Valley Canal carry?

About 1,784 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is County Road 15 over Poudre Valley Canal?

The structure is 21 ft (6.3 m) long with a longest span of 21 ft (6.3 m) and a deck 132 ft wide.

Who owns County Road 15 over Poudre Valley Canal?

It is owned by the County Highway Agency.