US Bridges

County Road 11 over Sheephorn Creek

Fair

Grand County, Colorado · 0.6 MI East of Radium · Structure no. 049001100.6007A

Built
1988
37 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
54 ft
1 main span
Daily traffic
300
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 11 over Sheephorn Creek is a steel stringer/multi-beam or girder carrying County Road 11 over Sheephorn Creek in Grand County, Colorado. It was built in 1988, so it is 37 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 300 vehicles a day, roughly 11% of them trucks, projected to reach 354 by 2042. The structure is 54 ft (16.5 m) long and 30 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesCounty Road 11
CrossesSheephorn Creek
Location0.6 MI East of Radium
RouteCounty Highway 0
CountyGrand County
StateColorado
Coordinates39.95452, -106.54986
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.7 US tons
Inventory rating23.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length54 ft (16.5 m)
Longest span47 ft (14.3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2023)
Projected traffic354 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 11 over Sheephorn Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is County Road 11 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 11 over Sheephorn Creek carry?

About 300 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is County Road 11 over Sheephorn Creek?

The structure is 54 ft (16.5 m) long with a longest span of 47 ft (14.3 m) and a deck 30 ft wide.

Who owns County Road 11 over Sheephorn Creek?

It is owned by the County Highway Agency.