US Bridges

US 30 Service Road over Twin Creek

FairPosted for load

Lincoln County, Wyoming · Kemmer-Sage Jct.Rd. · Structure no. ESZ

Built
1959
66 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
153
2024 count
Owner
State
State Highway Agency

About this bridge

US 30 Service Road over Twin Creek is a concrete continuous slab carrying US 30 Service Road over Twin Creek in Lincoln County, Wyoming. It was built in 1959, so it is 66 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 153 vehicles a day, roughly 9% of them trucks, projected to reach 214 by 2043. The structure is 80 ft (24.5 m) long and 37 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesUS 30 Service Road
CrossesTwin Creek
LocationKemmer-Sage Jct.Rd.
StateWyoming
Coordinates41.81826, -110.72449
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating26.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length80 ft (24.5 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2024)
Projected traffic214 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 US 30 Service Road over Twin Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 30 Service Road over Twin 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 July 2023.

How much traffic does US 30 Service Road over Twin Creek carry?

About 153 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is US 30 Service Road over Twin Creek?

The structure is 80 ft (24.5 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns US 30 Service Road over Twin Creek?

It is owned by the State Highway Agency.