US Bridges

I-80 Wbl over LA County Road 143

Fair

Laramie County, Wyoming · Cheyenne - Nebraska Line · Structure no. AZU

Built
1964
61 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
84 ft
3 main spans
Daily traffic
5,174
2024 count
Owner
State
State Highway Agency

About this bridge

I-80 Wbl over LA County Road 143 is a concrete continuous slab carrying I-80 Wbl over LA County Road 143 in Laramie County, Wyoming. It was built in 1964, so it is 61 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.

It carries about 5,174 vehicles a day, roughly 45% of them trucks, projected to reach 7,244 by 2043. The structure is 84 ft (25.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-80 Wbl
CrossesLA County Road 143
LocationCheyenne - Nebraska Line
RouteInterstate 80
CountyLaramie County
StateWyoming
Coordinates41.15716, -104.46509
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length84 ft (25.6 m)
Longest span35 ft (10.7 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,174 (2024)
Projected traffic7,244 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-80 Wbl over LA County Road 143 built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-80 Wbl over LA County Road 143 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 January 2024.

How much traffic does I-80 Wbl over LA County Road 143 carry?

About 5,174 vehicles per day (2024 count), of which roughly 45% are trucks.

How long is I-80 Wbl over LA County Road 143?

The structure is 84 ft (25.6 m) long with a longest span of 35 ft (10.7 m) and a deck 41 ft wide.

Who owns I-80 Wbl over LA County Road 143?

It is owned by the State Highway Agency.