US Bridges

I 86 Wbl over County Rd;old US 30N Gs

Fair

Cassia County, Idaho · 27.6 E. Burley · Structure no. 000000000010640

Built
1960
65 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
108 ft
3 main spans
Daily traffic
3,850
2023 count
Owner
State
State Highway Agency

About this bridge

I 86 Wbl over County Rd;old US 30N Gs is a concrete stringer/multi-beam or girder carrying I 86 Wbl over County Rd;old US 30N 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 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 3,850 vehicles a day, roughly 31% of them trucks, projected to reach 5,775 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 86 Wbl
CrossesCounty Rd;old US 30N Gs
Location27.6 E. Burley
RouteInterstate 86
CountyCassia County
StateIdaho
Coordinates42.59669, -113.24892
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 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 traffic3,850 (2023)
Projected traffic5,775 by 2042
Trucks31%
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 86 Wbl over County Rd;old US 30N Gs built?

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

What condition is I 86 Wbl over County Rd;old US 30N 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 June 2024.

How much traffic does I 86 Wbl over County Rd;old US 30N Gs carry?

About 3,850 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is I 86 Wbl over County Rd;old US 30N 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 86 Wbl over County Rd;old US 30N Gs?

It is owned by the State Highway Agency.