US Bridges

North Main Street over Spring Canyon Wash

FairPosted for load

Carbon County, Utah · West Helper · Structure no. 007030D

Built
1922
103 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
1,386
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

North Main Street over Spring Canyon Wash is a concrete tee beam carrying North Main Street over Spring Canyon Wash in Carbon County, Utah. It was built in 1922, so it is 103 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. Its operating status is: posted for load restriction.

It carries about 1,386 vehicles a day, roughly 2% of them trucks, projected to reach 1,684 by 2030. The structure is 28 ft (8.4 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNorth Main Street
CrossesSpring Canyon Wash
LocationWest Helper
RouteCity Street 1325
StateUtah
Coordinates39.69181, -110.86106
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.2 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length28 ft (8.4 m)
Longest span24 ft (7.3 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,386 (2010)
Projected traffic1,684 by 2030
Trucks2%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 North Main Street over Spring Canyon Wash built?

It was built in 1922, making it 103 years old in 2025.

What condition is North Main Street over Spring Canyon Wash 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 June 2024.

How much traffic does North Main Street over Spring Canyon Wash carry?

About 1,386 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is North Main Street over Spring Canyon Wash?

The structure is 28 ft (8.4 m) long with a longest span of 24 ft (7.3 m) and a deck 27 ft wide.

Who owns North Main Street over Spring Canyon Wash?

It is owned by the City or Municipal Highway Agency.