US Bridges

I-70 (SR-70) Wbl over Blaze Canyon Wash

Good

Grand County, Utah · 1 Mi.West Thompson Inter. · Structure no. 4V1264

Built
1976
49 years old
Condition
Good
inspected September 2023
Type
Culvert
Steel
Length
31 ft
2 main spans
Daily traffic
10,152
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 (SR-70) Wbl over Blaze Canyon Wash is a steel culvert carrying I-70 (SR-70) Wbl over Blaze Canyon Wash in Grand County, Utah. It was built in 1976, so it is 49 years old, older 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 10,152 vehicles a day, roughly 45% of them trucks, projected to reach 12,182 by 2043. The structure is 31 ft (9.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-70 (SR-70) Wbl
CrossesBlaze Canyon Wash
Location1 Mi.West Thompson Inter.
RouteInterstate 70
CountyGrand County
StateUtah
Coordinates38.95794, -109.74283
Functional classRural Principal Arterial - Interstate

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating106.5 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 15
Structure length31 ft (9.6 m)
Longest span13 ft (4.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,152 (2023)
Projected traffic12,182 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-70 (SR-70) Wbl over Blaze Canyon Wash built?

It was built in 1976, making it 49 years old in 2025.

What condition is I-70 (SR-70) Wbl over Blaze Canyon Wash 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 September 2023.

How much traffic does I-70 (SR-70) Wbl over Blaze Canyon Wash carry?

About 10,152 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-70 (SR-70) Wbl over Blaze Canyon Wash?

The structure is 31 ft (9.6 m) long with a longest span of 13 ft (4.1 m).

Who owns I-70 (SR-70) Wbl over Blaze Canyon Wash?

It is owned by the State Highway Agency.