US Bridges

I-70 (SR-70) Wbl over SR-120 Intchg.X-Road

Fair

Sevier County, Utah · North Richfield Intchg. · Structure no. 4F 532

Built
1988
37 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
143 ft
1 main span
Daily traffic
7,301
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 (SR-70) Wbl over SR-120 Intchg.X-Road is a prestressed concrete stringer/multi-beam or girder carrying I-70 (SR-70) Wbl over SR-120 Intchg.X-Road in Sevier County, Utah. It was built in 1988, so it is 37 years old, younger 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 7,301 vehicles a day, roughly 33% of them trucks, projected to reach 8,761 by 2043. The structure is 143 ft (43.5 m) long and 44 ft wide.

Location

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CarriesI-70 (SR-70) Wbl
CrossesSR-120 Intchg.X-Road
LocationNorth Richfield Intchg.
RouteInterstate 70
CountySevier County
StateUtah
Coordinates38.79028, -112.08278
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length143 ft (43.5 m)
Longest span140 ft (42.7 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,301 (2023)
Projected traffic8,761 by 2043
Trucks33%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 SR-120 Intchg.X-Road built?

It was built in 1988, making it 37 years old in 2025.

What condition is I-70 (SR-70) Wbl over SR-120 Intchg.X-Road 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 I-70 (SR-70) Wbl over SR-120 Intchg.X-Road carry?

About 7,301 vehicles per day (2023 count), of which roughly 33% are trucks.

How long is I-70 (SR-70) Wbl over SR-120 Intchg.X-Road?

The structure is 143 ft (43.5 m) long with a longest span of 140 ft (42.7 m) and a deck 44 ft wide.

Who owns I-70 (SR-70) Wbl over SR-120 Intchg.X-Road?

It is owned by the State Highway Agency.