US Bridges

I-15 (SR-15) Sbl over SR-228 Intchg. X-Road

Fair

Washington County, Utah · North Leeds Interchange · Structure no. 3D 680

Built
1962
63 years old
Condition
Fair
inspected January 2023
Type
Tee Beam
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
31,827
2023 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over SR-228 Intchg. X-Road is a concrete continuous tee beam carrying I-15 (SR-15) Sbl over SR-228 Intchg. X-Road in Washington County, Utah. It was built in 1962, so it is 63 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 31,827 vehicles a day, roughly 29% of them trucks, projected to reach 38,192 by 2043. The structure is 120 ft (36.7 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-15 (SR-15) Sbl
CrossesSR-228 Intchg. X-Road
LocationNorth Leeds Interchange
RouteInterstate 15
CountyWashington County
StateUtah
Coordinates37.24429, -113.35303
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating34.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length120 ft (36.7 m)
Longest span38 ft (11.6 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic31,827 (2023)
Projected traffic38,192 by 2043
Trucks29%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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-15 (SR-15) Sbl over SR-228 Intchg. X-Road built?

It was built in 1962, making it 63 years old in 2025.

What condition is I-15 (SR-15) Sbl over SR-228 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 January 2023.

How much traffic does I-15 (SR-15) Sbl over SR-228 Intchg. X-Road carry?

About 31,827 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is I-15 (SR-15) Sbl over SR-228 Intchg. X-Road?

The structure is 120 ft (36.7 m) long with a longest span of 38 ft (11.6 m) and a deck 41 ft wide.

Who owns I-15 (SR-15) Sbl over SR-228 Intchg. X-Road?

It is owned by the State Highway Agency.