US Bridges

County Road over I 15;W.PORTERVILLE Rd.Gs

Fair

Bingham County, Idaho · 2.2 N. Blackfoot · Structure no. 000000000023125

Built
1962
63 years old
Condition
Fair
inspected August 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
254 ft
3 main spans
Daily traffic
1,400
2023 count
Owner
State
State Highway Agency

About this bridge

County Road over I 15;W.PORTERVILLE Rd.Gs is a prestressed concrete stringer/multi-beam or girder carrying County Road over I 15;W.PORTERVILLE Rd.Gs in Bingham County, Idaho. It was built in 1962, so it is 63 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 1,400 vehicles a day, roughly 27% of them trucks, projected to reach 2,100 by 2042. The structure is 254 ft (77.4 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesI 15;W.PORTERVILLE Rd.Gs
Location2.2 N. Blackfoot
RouteCounty Highway 0
CountyBingham County
StateIdaho
Coordinates43.22543, -112.34091
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length254 ft (77.4 m)
Longest span58 ft (17.7 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic2,100 by 2042
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.9 million (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road over I 15;W.PORTERVILLE Rd.Gs built?

It was built in 1962, making it 63 years old in 2025.

What condition is County Road over I 15;W.PORTERVILLE Rd.Gs 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 August 2021.

How much traffic does County Road over I 15;W.PORTERVILLE Rd.Gs carry?

About 1,400 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is County Road over I 15;W.PORTERVILLE Rd.Gs?

The structure is 254 ft (77.4 m) long with a longest span of 58 ft (17.7 m) and a deck 29 ft wide.

Who owns County Road over I 15;W.PORTERVILLE Rd.Gs?

It is owned by the State Highway Agency.