US Bridges

SR-13 over Bothwell Canal

Fair

Box Elder County, Utah · South of Plymouth · Structure no. 0E 980

Built
1939
86 years old, rebuilt 1954
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
1,318
2021 count
Owner
State
State Highway Agency

About this bridge

SR-13 over Bothwell Canal is a concrete culvert carrying SR-13 over Bothwell Canal in Box Elder County, Utah. It was built in 1939 and reconstructed in 1954, so it is 86 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 6 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 1,318 vehicles a day, roughly 31% of them trucks, projected to reach 1,582 by 2041. The structure is 26 ft (7.9 m) long and 61 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesSR-13
CrossesBothwell Canal
LocationSouth of Plymouth
RouteState Highway 13
CountyBox Elder County
StateUtah
Coordinates41.84472, -112.14639
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating21.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width61 ft (18.5 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,318 (2021)
Projected traffic1,582 by 2041
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 SR-13 over Bothwell Canal built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1954.

What condition is SR-13 over Bothwell Canal 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 April 2023.

How much traffic does SR-13 over Bothwell Canal carry?

About 1,318 vehicles per day (2021 count), of which roughly 31% are trucks.

How long is SR-13 over Bothwell Canal?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 61 ft wide.

Who owns SR-13 over Bothwell Canal?

It is owned by the State Highway Agency.