US Bridges

US 50 Ml over Sheep Basin

Good

Fremont County, Colorado · 6.2 MI East of JCT SH 69 · Structure no. K-14-N

Built
1996
29 years old
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
141 ft
3 main spans
Daily traffic
2,500
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over Sheep Basin is a prestressed concrete slab carrying US 50 Ml over Sheep Basin in Fremont County, Colorado. It was built in 1996, so it is 29 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,500 vehicles a day, roughly 13% of them trucks, projected to reach 2,575 by 2040. The structure is 141 ft (43 m) long and 73 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesUS 50 Ml
CrossesSheep Basin
Location6.2 MI East of JCT SH 69
RouteU.S. Route 50A
Coordinates38.45294, -105.49457
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.6 US tons
Inventory rating37.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length141 ft (43 m)
Longest span40 ft (12.2 m)
Deck width73 ft (22.4 m)
Roadway width71 ft (21.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2020)
Projected traffic2,575 by 2040
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 50 Ml over Sheep Basin built?

It was built in 1996, making it 29 years old in 2025.

What condition is US 50 Ml over Sheep Basin in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does US 50 Ml over Sheep Basin carry?

About 2,500 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is US 50 Ml over Sheep Basin?

The structure is 141 ft (43 m) long with a longest span of 40 ft (12.2 m) and a deck 73 ft wide.

Who owns US 50 Ml over Sheep Basin?

It is owned by the State Highway Agency.