US Bridges

S7241;NRTHGTE Pkwy over I 15 Nb-Sb;northgate Ic

Good

Bannock County, Idaho · 4.0 N Pocatello · Structure no. 000000000021223

Built
2020
5 years old
Condition
Good
inspected March 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
174 ft
2 main spans
Daily traffic
6,500
2023 count
Owner
State
State Highway Agency

About this bridge

S7241;NRTHGTE Pkwy over I 15 Nb-Sb;northgate Ic is a prestressed concrete stringer/multi-beam or girder carrying S7241;NRTHGTE Pkwy over I 15 Nb-Sb;northgate Ic in Bannock County, Idaho. It was built in 2020, so it is 5 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,500 vehicles a day, roughly 3% of them trucks, projected to reach 9,750 by 2042. The structure is 174 ft (53 m) long and 109 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS7241;NRTHGTE Pkwy
CrossesI 15 Nb-Sb;northgate Ic
Location4.0 N Pocatello
RouteCounty Highway 7241
CountyBannock County
StateIdaho
Coordinates42.93286, -112.44053
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable 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 rating64.3 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length174 ft (53 m)
Longest span85 ft (25.9 m)
Deck width109 ft (33.2 m)
Roadway width91 ft (27.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2023)
Projected traffic9,750 by 2042
Trucks3%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S7241;NRTHGTE Pkwy over I 15 Nb-Sb;northgate Ic built?

It was built in 2020, making it 5 years old in 2025.

What condition is S7241;NRTHGTE Pkwy over I 15 Nb-Sb;northgate Ic in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2022.

How much traffic does S7241;NRTHGTE Pkwy over I 15 Nb-Sb;northgate Ic carry?

About 6,500 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S7241;NRTHGTE Pkwy over I 15 Nb-Sb;northgate Ic?

The structure is 174 ft (53 m) long with a longest span of 85 ft (25.9 m) and a deck 109 ft wide.

Who owns S7241;NRTHGTE Pkwy over I 15 Nb-Sb;northgate Ic?

It is owned by the State Highway Agency.