US Bridges

County Road 37 over Lone Pine Creek

Fair

Larimer County, Colorado · 0.2 MI N of CO RD 74E · Structure no. LR37-0.2-74E

Built
1981
44 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
96
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 37 over Lone Pine Creek is a prestressed concrete tee beam carrying County Road 37 over Lone Pine Creek in Larimer County, Colorado. It was built in 1981, so it is 44 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 96 vehicles a day, roughly 20% of them trucks, projected to reach 120 by 2042. The structure is 63 ft (19.3 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCounty Road 37
CrossesLone Pine Creek
Location0.2 MI N of CO RD 74E
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.79472, -105.28725
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating18.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length63 ft (19.3 m)
Longest span60 ft (18.3 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic120 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 37 over Lone Pine Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is County Road 37 over Lone Pine Creek 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 May 2023.

How much traffic does County Road 37 over Lone Pine Creek carry?

About 96 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is County Road 37 over Lone Pine Creek?

The structure is 63 ft (19.3 m) long with a longest span of 60 ft (18.3 m) and a deck 40 ft wide.

Who owns County Road 37 over Lone Pine Creek?

It is owned by the County Highway Agency.