US Bridges

E 1900 N over I 15 Nb-Sb;e 1900 N Gs

Good

Jefferson County, Idaho · 1.8 S. Hamer · Structure no. 000000000032630

Built
1960
65 years old, rebuilt 1981
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
212 ft
3 main spans
Daily traffic
90
2023 count
Owner
State
State Highway Agency

About this bridge

E 1900 N over I 15 Nb-Sb;e 1900 N Gs is a prestressed concrete box beam or girders - multiple carrying E 1900 N over I 15 Nb-Sb;e 1900 N Gs in Jefferson County, Idaho. It was built in 1960 and reconstructed in 1981, so it is 65 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 90 vehicles a day, roughly 13% of them trucks, projected to reach 135 by 2042. The structure is 212 ft (64.6 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesE 1900 N
CrossesI 15 Nb-Sb;e 1900 N Gs
Location1.8 S. Hamer
RouteCounty Highway 0
StateIdaho
Coordinates43.89936, -112.20769
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

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 traffic90 (2023)
Projected traffic135 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 E 1900 N over I 15 Nb-Sb;e 1900 N Gs built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1981.

What condition is E 1900 N over I 15 Nb-Sb;e 1900 N Gs 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 April 2023.

How much traffic does E 1900 N over I 15 Nb-Sb;e 1900 N Gs carry?

About 90 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is E 1900 N over I 15 Nb-Sb;e 1900 N 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 E 1900 N over I 15 Nb-Sb;e 1900 N Gs?

It is owned by the State Highway Agency.