US Bridges

E 400 N over Twin Groves Canal

Good

Fremont County, Idaho · 0.8 E 1.8 S ST Anthony · Structure no. 000000000032003

Built
2023
2 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
27 ft
1 main span
Daily traffic
630
2023 count
Owner
County
County Highway Agency

About this bridge

E 400 N over Twin Groves Canal is a concrete culvert carrying E 400 N over Twin Groves Canal in Fremont County, Idaho. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 630 vehicles a day, projected to reach 945 by 2042. The structure is 27 ft (8.1 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesE 400 N
CrossesTwin Groves Canal
Location0.8 E 1.8 S ST Anthony
RouteCounty Highway 0
StateIdaho
Coordinates43.94136, -111.69803
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
Culvert9 ExcellentNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.9 US tons
Inventory rating41.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length27 ft (8.1 m)
Longest span27 ft (8.1 m)
Deck width57 ft (17.4 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic630 (2023)
Projected traffic945 by 2042
Trucks0%
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 400 N over Twin Groves Canal built?

It was built in 2023, making it 2 years old in 2025.

What condition is E 400 N over Twin Groves Canal 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 2024.

How much traffic does E 400 N over Twin Groves Canal carry?

About 630 vehicles per day (2023 count).

How long is E 400 N over Twin Groves Canal?

The structure is 27 ft (8.1 m) long with a longest span of 27 ft (8.1 m) and a deck 57 ft wide.

Who owns E 400 N over Twin Groves Canal?

It is owned by the County Highway Agency.