US Bridges

County Road 80 over N. Poudre Canal/Park Cr.

Fair

Larimer County, Colorado · 4.9 MI E of US HWY 287 · Structure no. LR80-4.9-S287

Built
1970
55 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
59
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 80 over N. Poudre Canal/Park Cr. is a prestressed concrete tee beam carrying County Road 80 over N. Poudre Canal/Park Cr. in Larimer County, Colorado. It was built in 1970, so it is 55 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 5 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 59 vehicles a day, roughly 23% of them trucks, projected to reach 73 by 2043. The structure is 28 ft (8.4 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty Road 80
CrossesN. Poudre Canal/Park Cr.
Location4.9 MI E of US HWY 287
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.84136, -105.17028
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating32.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span24 ft (7.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2023)
Projected traffic73 by 2043
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 80 over N. Poudre Canal/Park Cr. built?

It was built in 1970, making it 55 years old in 2025.

What condition is County Road 80 over N. Poudre Canal/Park Cr. 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 April 2023.

How much traffic does County Road 80 over N. Poudre Canal/Park Cr. carry?

About 59 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is County Road 80 over N. Poudre Canal/Park Cr.?

The structure is 28 ft (8.4 m) long with a longest span of 24 ft (7.2 m) and a deck 24 ft wide.

Who owns County Road 80 over N. Poudre Canal/Park Cr.?

It is owned by the County Highway Agency.