US Bridges

Unit 1 Access over Inlet to Unit 1

Good

Box Elder County, Utah · L-Line Dike · Structure no. 000065530-00032

Built
2013
12 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
37 ft
4 main spans
Daily traffic
5
2022 count
Owner
Federal
Bureau of Fish and Wildlife

About this bridge

Unit 1 Access over Inlet to Unit 1 is a concrete culvert carrying Unit 1 Access over Inlet to Unit 1 in Box Elder County, Utah. It was built in 2013, so it is 12 years old, younger than the Utah average of 40.1 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 5 vehicles a day, projected to reach 5 by 2042. The structure is 37 ft (11.3 m) long and 15 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUnit 1 Access
CrossesInlet to Unit 1
LocationL-Line Dike
RouteFederal Lands Road 0
CountyBox Elder County
StateUtah
Coordinates41.49967, -112.29317
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79 US tons
Inventory rating61 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span8 ft (2.4 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic5 (2022)
Projected traffic5 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Fish and Wildlife
Maintained byBureau of Fish and Wildlife
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Unit 1 Access over Inlet to Unit 1 built?

It was built in 2013, making it 12 years old in 2025.

What condition is Unit 1 Access over Inlet to Unit 1 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 October 2022.

How much traffic does Unit 1 Access over Inlet to Unit 1 carry?

About 5 vehicles per day (2022 count).

How long is Unit 1 Access over Inlet to Unit 1?

The structure is 37 ft (11.3 m) long with a longest span of 8 ft (2.4 m) and a deck 15 ft wide.

Who owns Unit 1 Access over Inlet to Unit 1?

It is owned by the Bureau of Fish and Wildlife.