US Bridges

E 1300 N over Henrys Fk Snake River

Good

Fremont County, Idaho · 2.7 W Ashton · Structure no. 000000000021081

Built
2020
5 years old
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
483 ft
4 main spans
Daily traffic
500
2023 count
Owner
County
County Highway Agency

About this bridge

E 1300 N over Henrys Fk Snake River is a prestressed concrete stringer/multi-beam or girder carrying E 1300 N over Henrys Fk Snake River in Fremont 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 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 500 vehicles a day, roughly 4% of them trucks, projected to reach 750 by 2042. The structure is 483 ft (147.2 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesE 1300 N
CrossesHenrys Fk Snake River
Location2.7 W Ashton
RouteCounty Highway 0
StateIdaho
Coordinates44.07133, -111.51108
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.6 US tons
Inventory rating48.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length483 ft (147.2 m)
Longest span135 ft (41.1 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic750 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was E 1300 N over Henrys Fk Snake River built?

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

What condition is E 1300 N over Henrys Fk Snake River 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 November 2022.

How much traffic does E 1300 N over Henrys Fk Snake River carry?

About 500 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is E 1300 N over Henrys Fk Snake River?

The structure is 483 ft (147.2 m) long with a longest span of 135 ft (41.1 m) and a deck 38 ft wide.

Who owns E 1300 N over Henrys Fk Snake River?

It is owned by the County Highway Agency.