US Bridges

Wyo 51 over Well Creek

Fair

Crook County, Wyoming · Gillette - Moorcroft · Structure no. BGK

Built
1956
69 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
91 ft
4 main spans
Daily traffic
1,326
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 51 over Well Creek is a concrete continuous slab carrying Wyo 51 over Well Creek in Crook County, Wyoming. It was built in 1956, so it is 69 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 5 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 1,326 vehicles a day, roughly 11% of them trucks, projected to reach 1,856 by 2043. The structure is 91 ft (27.6 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWyo 51
CrossesWell Creek
LocationGillette - Moorcroft
RouteState Highway 51
CountyCrook County
StateWyoming
Coordinates44.28516, -105.08145
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length91 ft (27.6 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 traffic1,326 (2024)
Projected traffic1,856 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 51 over Well Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Wyo 51 over Well 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 August 2024.

How much traffic does Wyo 51 over Well Creek carry?

About 1,326 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Wyo 51 over Well Creek?

The structure is 91 ft (27.6 m) long with a longest span of 24 ft (7.3 m) and a deck 35 ft wide.

Who owns Wyo 51 over Well Creek?

It is owned by the State Highway Agency.