US Bridges

SH 24 over B Canal

Good

Minidoka County, Idaho · 0.4 E. Rupert · Structure no. 000000000012995

Built
1983
42 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
103 ft
3 main spans
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

SH 24 over B Canal is a concrete culvert carrying SH 24 over B Canal in Minidoka County, Idaho. It was built in 1983, so it is 42 years old, younger 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 3,500 vehicles a day, roughly 16% of them trucks, projected to reach 5,250 by 2042. The structure is 103 ft (31.4 m) long and 58 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSH 24
CrossesB Canal
Location0.4 E. Rupert
RouteState Highway 24
StateIdaho
Coordinates42.62339, -113.66367
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating52 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length103 ft (31.4 m)
Longest span32 ft (9.8 m)
Deck width58 ft (17.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic5,250 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 SH 24 over B Canal built?

It was built in 1983, making it 42 years old in 2025.

What condition is SH 24 over B 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 November 2024.

How much traffic does SH 24 over B Canal carry?

About 3,500 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SH 24 over B Canal?

The structure is 103 ft (31.4 m) long with a longest span of 32 ft (9.8 m) and a deck 58 ft wide.

Who owns SH 24 over B Canal?

It is owned by the State Highway Agency.