US Bridges

IRR BIA RTE 24 over Main Canal

Good

Bingham County, Idaho · 4 KM East of Fort Hall · Structure no. 00000000000P421

Built
1969
56 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
820
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 24 over Main Canal is a prestressed concrete tee beam carrying IRR BIA RTE 24 over Main Canal in Bingham County, Idaho. It was built in 1969, so it is 56 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 820 vehicles a day, roughly 15% of them trucks, projected to reach 360 by 2043. The structure is 60 ft (18.3 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesIRR BIA RTE 24
CrossesMain Canal
Location4 KM East of Fort Hall
RouteFederal Lands Road 24
StateIdaho
Coordinates43.02206, -112.38956
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span58 ft (17.7 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic820 (2023)
Projected traffic360 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR BIA RTE 24 over Main Canal built?

It was built in 1969, making it 56 years old in 2025.

What condition is IRR BIA RTE 24 over Main Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does IRR BIA RTE 24 over Main Canal carry?

About 820 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is IRR BIA RTE 24 over Main Canal?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 33 ft wide.

Who owns IRR BIA RTE 24 over Main Canal?

It is owned by the Bureau of Indian Affairs.