US Bridges

US 310 over Little Dry Creek

FairPosted for load

Big Horn County, Wyoming · JCT Wyo 310 - Lovell · Structure no. CCZ

Built
1957
68 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
115 ft
5 main spans
Daily traffic
2,271
2024 count
Owner
State
State Highway Agency

About this bridge

US 310 over Little Dry Creek is a concrete continuous slab carrying US 310 over Little Dry Creek in Big Horn County, Wyoming. It was built in 1957, so it is 68 years old, older than the Wyoming average of 48.4 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. Its operating status is: posted for load restriction.

It carries about 2,271 vehicles a day, roughly 11% of them trucks, projected to reach 3,179 by 2043. The structure is 115 ft (34.9 m) long and 35 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesUS 310
CrossesLittle Dry Creek
LocationJCT Wyo 310 - Lovell
RouteU.S. Route 310
CountyBig Horn County
StateWyoming
Coordinates44.53909, -108.16488
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating25.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length115 ft (34.9 m)
Longest span24 ft (7.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,271 (2024)
Projected traffic3,179 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$22,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 310 over Little Dry Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is US 310 over Little Dry 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 US 310 over Little Dry Creek carry?

About 2,271 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is US 310 over Little Dry Creek?

The structure is 115 ft (34.9 m) long with a longest span of 24 ft (7.3 m) and a deck 35 ft wide.

Who owns US 310 over Little Dry Creek?

It is owned by the State Highway Agency.