US Bridges

I 84 Wbl over 1250 E Gs

Fair

Cassia County, Idaho · 12.3 E. Burley · Structure no. 000000000016420

Built
1960
65 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
108 ft
3 main spans
Daily traffic
9,500
2023 count
Owner
State
State Highway Agency

About this bridge

I 84 Wbl over 1250 E Gs is a concrete stringer/multi-beam or girder carrying I 84 Wbl over 1250 E Gs in Cassia County, Idaho. It was built in 1960, so it is 65 years old, older than the Idaho average of 45.3 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 9,500 vehicles a day, roughly 38% of them trucks, projected to reach 14,250 by 2042. The structure is 108 ft (32.9 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 84 Wbl
Crosses1250 E Gs
Location12.3 E. Burley
RouteInterstate 84
CountyCassia County
StateIdaho
Coordinates42.56873, -113.54662
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 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 rating57 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span35 ft (10.7 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,500 (2023)
Projected traffic14,250 by 2042
Trucks38%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 84 Wbl over 1250 E Gs built?

It was built in 1960, making it 65 years old in 2025.

What condition is I 84 Wbl over 1250 E Gs 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 I 84 Wbl over 1250 E Gs carry?

About 9,500 vehicles per day (2023 count), of which roughly 38% are trucks.

How long is I 84 Wbl over 1250 E Gs?

The structure is 108 ft (32.9 m) long with a longest span of 35 ft (10.7 m) and a deck 40 ft wide.

Who owns I 84 Wbl over 1250 E Gs?

It is owned by the State Highway Agency.