US Bridges

County Road 1 over Sheephorn Creek

Fair

Grand County, Colorado · Just South of MP 15 · Structure no. 49000100.60041

Built
1997
28 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
632
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 1 over Sheephorn Creek is a concrete culvert carrying County Road 1 over Sheephorn Creek in Grand County, Colorado. It was built in 1997, so it is 28 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 632 vehicles a day, roughly 20% of them trucks, projected to reach 746 by 2042. The structure is 22 ft (6.7 m) long and 83 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesCounty Road 1
CrossesSheephorn Creek
LocationJust South of MP 15
RouteCounty Highway 0
CountyGrand County
StateColorado
Coordinates39.92968, -106.52643
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3.2 m)
Deck width83 ft (25.3 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic632 (2023)
Projected traffic746 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 1 over Sheephorn Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is County Road 1 over Sheephorn 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 September 2023.

How much traffic does County Road 1 over Sheephorn Creek carry?

About 632 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is County Road 1 over Sheephorn Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3.2 m) and a deck 83 ft wide.

Who owns County Road 1 over Sheephorn Creek?

It is owned by the County Highway Agency.