US Bridges

I 15 Nbl over Sma 7461;E. Terry ST

Fair

Bannock County, Idaho · 0.6 S. Pocatello · Structure no. 000000000011245

Built
1964
61 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
152 ft
4 main spans
Daily traffic
13,250
2023 count
Owner
State
State Highway Agency

About this bridge

I 15 Nbl over Sma 7461;E. Terry ST is a concrete stringer/multi-beam or girder carrying I 15 Nbl over Sma 7461;E. Terry ST in Bannock County, Idaho. It was built in 1964, so it is 61 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 13,250 vehicles a day, roughly 15% of them trucks, projected to reach 19,875 by 2042. The structure is 152 ft (46.3 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 15 Nbl
CrossesSma 7461;E. Terry ST
Location0.6 S. Pocatello
RouteInterstate 15
CountyBannock County
StateIdaho
Coordinates42.86689, -112.421
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span37 ft (11.3 m)
Deck width39 ft (12 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,250 (2023)
Projected traffic19,875 by 2042
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$1.9 million (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 15 Nbl over Sma 7461;E. Terry ST built?

It was built in 1964, making it 61 years old in 2025.

What condition is I 15 Nbl over Sma 7461;E. Terry ST 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 September 2023.

How much traffic does I 15 Nbl over Sma 7461;E. Terry ST carry?

About 13,250 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I 15 Nbl over Sma 7461;E. Terry ST?

The structure is 152 ft (46.3 m) long with a longest span of 37 ft (11.3 m) and a deck 39 ft wide.

Who owns I 15 Nbl over Sma 7461;E. Terry ST?

It is owned by the State Highway Agency.