US Bridges

STC1837;W River RD over Aberdeen Springfield Cnl

Fair

Bingham County, Idaho · 5.6 N. 2.3 E. Blackfoot · Structure no. 000000000022865

Built
1981
44 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
1,300
2023 count
Owner
County
County Highway Agency

About this bridge

STC1837;W River RD over Aberdeen Springfield Cnl is a prestressed concrete tee beam carrying STC1837;W River RD over Aberdeen Springfield Cnl in Bingham County, Idaho. It was built in 1981, so it is 44 years old, younger 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 1,300 vehicles a day, roughly 11% of them trucks, projected to reach 1,950 by 2042. The structure is 50 ft (15.2 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSTC1837;W River RD
CrossesAberdeen Springfield Cnl
Location5.6 N. 2.3 E. Blackfoot
RouteCounty Highway 1837
CountyBingham County
StateIdaho
Coordinates43.26978, -112.29942
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic1,950 by 2042
Trucks11%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$833,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC1837;W River RD over Aberdeen Springfield Cnl built?

It was built in 1981, making it 44 years old in 2025.

What condition is STC1837;W River RD over Aberdeen Springfield Cnl 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 2023.

How much traffic does STC1837;W River RD over Aberdeen Springfield Cnl carry?

About 1,300 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is STC1837;W River RD over Aberdeen Springfield Cnl?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 26 ft wide.

Who owns STC1837;W River RD over Aberdeen Springfield Cnl?

It is owned by the County Highway Agency.