US Bridges

Sand Road over I 15;SAND Road Gs

Fair

Bingham County, Idaho · 6.9 S. Blackfoot · Structure no. 000000000023095

Built
1959
66 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
212 ft
3 main spans
Daily traffic
250
2023 count
Owner
State
State Highway Agency

About this bridge

Sand Road over I 15;SAND Road Gs is a prestressed concrete stringer/multi-beam or girder carrying Sand Road over I 15;SAND Road Gs in Bingham County, Idaho. It was built in 1959, 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 250 vehicles a day, roughly 10% of them trucks, projected to reach 375 by 2042. The structure is 212 ft (64.6 m) long and 29 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSand Road
CrossesI 15;SAND Road Gs
Location6.9 S. Blackfoot
RouteCounty Highway 0
CountyBingham County
StateIdaho
Coordinates43.10403, -112.39239
Functional classRural Local

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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length212 ft (64.6 m)
Longest span49 ft (14.9 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic375 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.2 mi (18 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$1.8 million (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sand Road over I 15;SAND Road Gs built?

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

What condition is Sand Road over I 15;SAND Road 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 June 2023.

How much traffic does Sand Road over I 15;SAND Road Gs carry?

About 250 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sand Road over I 15;SAND Road Gs?

The structure is 212 ft (64.6 m) long with a longest span of 49 ft (14.9 m) and a deck 29 ft wide.

Who owns Sand Road over I 15;SAND Road Gs?

It is owned by the State Highway Agency.