US Bridges

Sheep Creek RD over Sheep Creek

Good

Custer County, Montana · 36M E Miles City · Structure no. 000000202302603

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
22
2023 count
Owner
County
County Highway Agency

About this bridge

Sheep Creek RD over Sheep Creek is a prestressed concrete tee beam carrying Sheep Creek RD over Sheep Creek in Custer County, Montana. It was built in 2023, so it is 2 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 22 vehicles a day, roughly 3% of them trucks, projected to reach 23 by 2043. The structure is 103 ft (31.4 m) long and 27 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

CarriesSheep Creek RD
CrossesSheep Creek
Location36M E Miles City
RouteCounty Highway 9303
StateMontana
Coordinates46.3025, -105.277
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.9 US tons
Inventory rating44.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length103 ft (31.4 m)
Longest span101 ft (30.7 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22 (2023)
Projected traffic23 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 Sheep Creek RD over Sheep Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Sheep Creek RD over Sheep Creek 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 June 2023.

How much traffic does Sheep Creek RD over Sheep Creek carry?

About 22 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Sheep Creek RD over Sheep Creek?

The structure is 103 ft (31.4 m) long with a longest span of 101 ft (30.7 m) and a deck 27 ft wide.

Who owns Sheep Creek RD over Sheep Creek?

It is owned by the County Highway Agency.