US Bridges

SR-13 over Chase Slough

Fair

Box Elder County, Utah · Northwest of Brigham City · Structure no. 0D 383

Built
1935
90 years old
Condition
Fair
inspected May 2023
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
8,545
2017 count
Owner
State
State Highway Agency

About this bridge

SR-13 over Chase Slough is a concrete frame carrying SR-13 over Chase Slough in Box Elder County, Utah. It was built in 1935, so it is 90 years old, older than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,545 vehicles a day, roughly 22% of them trucks, projected to reach 10,254 by 2037. The structure is 22 ft (6.8 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR-13
CrossesChase Slough
LocationNorthwest of Brigham City
RouteState Highway 13
CountyBox Elder County
StateUtah
Coordinates41.5342, -112.05925
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length22 ft (6.8 m)
Longest span20 ft (6.1 m)
Deck width40 ft (12.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic8,545 (2017)
Projected traffic10,254 by 2037
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 SR-13 over Chase Slough built?

It was built in 1935, making it 90 years old in 2025.

What condition is SR-13 over Chase Slough in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does SR-13 over Chase Slough carry?

About 8,545 vehicles per day (2017 count), of which roughly 22% are trucks.

How long is SR-13 over Chase Slough?

The structure is 22 ft (6.8 m) long with a longest span of 20 ft (6.1 m) and a deck 40 ft wide.

Who owns SR-13 over Chase Slough?

It is owned by the State Highway Agency.