US Bridges

Stc 7882;50 S. Rd. over B-4 Canal

Fair

Minidoka County, Idaho · 0.75 W. 0.5 S. Rupert · Structure no. 000000000025235

Built
1941
84 years old, rebuilt 1962
Condition
Fair
inspected April 2023
Type
Tee Beam
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
2,400
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stc 7882;50 S. Rd. over B-4 Canal is a prestressed concrete tee beam carrying Stc 7882;50 S. Rd. over B-4 Canal in Minidoka County, Idaho. It was built in 1941 and reconstructed in 1962, so it is 84 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 2,400 vehicles a day, roughly 11% of them trucks, projected to reach 3,600 by 2042. The structure is 41 ft (12.5 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesStc 7882;50 S. Rd.
CrossesB-4 Canal
Location0.75 W. 0.5 S. Rupert
RouteCity Street 7882
CountyMinidoka County
StateIdaho
Coordinates42.61236, -113.68281
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2023)
Projected traffic3,600 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$666,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 7882;50 S. Rd. over B-4 Canal built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1962.

What condition is Stc 7882;50 S. Rd. over B-4 Canal 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 April 2023.

How much traffic does Stc 7882;50 S. Rd. over B-4 Canal carry?

About 2,400 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Stc 7882;50 S. Rd. over B-4 Canal?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.

Who owns Stc 7882;50 S. Rd. over B-4 Canal?

It is owned by the City or Municipal Highway Agency.