US Bridges

Stc 1847; E 1250 N over Great Western Canal

Fair

Bingham County, Idaho · 2.6 W. Shelley · Structure no. 000000000019270

Built
1959
66 years old, rebuilt 1980
Condition
Fair
inspected October 2022
Type
Frame
Concrete
Length
21 ft
1 main span
Daily traffic
3,300
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 1847; E 1250 N over Great Western Canal is a concrete frame carrying Stc 1847; E 1250 N over Great Western Canal in Bingham County, Idaho. It was built in 1959 and reconstructed in 1980, so it is 66 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 3,300 vehicles a day, roughly 10% of them trucks, projected to reach 4,950 by 2042. The structure is 21 ft (6.4 m) long and 61 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesStc 1847; E 1250 N
CrossesGreat Western Canal
Location2.6 W. Shelley
RouteCounty Highway 1847
CountyBingham County
StateIdaho
Coordinates43.37769, -112.17886
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating54 US tons
Inventory rating32 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width61 ft (18.6 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2023)
Projected traffic4,950 by 2042
Trucks10%
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

OwnerCounty Highway Agency
Maintained byCounty 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 Stc 1847; E 1250 N over Great Western Canal built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1980.

What condition is Stc 1847; E 1250 N over Great Western 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 October 2022.

How much traffic does Stc 1847; E 1250 N over Great Western Canal carry?

About 3,300 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Stc 1847; E 1250 N over Great Western Canal?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 61 ft wide.

Who owns Stc 1847; E 1250 N over Great Western Canal?

It is owned by the County Highway Agency.