US Bridges

County Road 9 over North Poudre Canal

Fair

Larimer County, Colorado · 1.5 MI N of CO RD 70 · Structure no. LR9-0.5-70

Built
1980
45 years old
Condition
Fair
inspected March 2025
Type
Tee Beam
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
888
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 9 over North Poudre Canal is a prestressed concrete tee beam carrying County Road 9 over North Poudre Canal in Larimer County, Colorado. It was built in 1980, so it is 45 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 888 vehicles a day, roughly 29% of them trucks, projected to reach 1,110 by 2043. The structure is 33 ft (10.1 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 9
CrossesNorth Poudre Canal
Location1.5 MI N of CO RD 70
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.76183, -105.01927
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating20.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic888 (2023)
Projected traffic1,110 by 2043
Trucks29%
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 9 over North Poudre Canal built?

It was built in 1980, making it 45 years old in 2025.

What condition is County Road 9 over North Poudre 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 9 over North Poudre Canal carry?

About 888 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is County Road 9 over North Poudre Canal?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 42 ft wide.

Who owns County Road 9 over North Poudre Canal?

It is owned by the County Highway Agency.