US Bridges

I-15 (SR-15) Sbl over SR-133 Intchg. X-Road

Fair

Millard County, Utah · Meadow Interchange · Structure no. 3F 259

Built
1972
53 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
183 ft
3 main spans
Daily traffic
16,820
2023 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15) Sbl over SR-133 Intchg. X-Road is a prestressed concrete stringer/multi-beam or girder carrying I-15 (SR-15) Sbl over SR-133 Intchg. X-Road in Millard County, Utah. It was built in 1972, so it is 53 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 16,820 vehicles a day, roughly 32% of them trucks, projected to reach 20,184 by 2043. The structure is 183 ft (55.7 m) long and 44 ft wide.

Location

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CarriesI-15 (SR-15) Sbl
CrossesSR-133 Intchg. X-Road
LocationMeadow Interchange
RouteInterstate 15
CountyMillard County
StateUtah
Coordinates38.89411, -112.4114
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 rating53.2 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length183 ft (55.7 m)
Longest span86 ft (26.2 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,820 (2023)
Projected traffic20,184 by 2043
Trucks32%
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-15 (SR-15) Sbl over SR-133 Intchg. X-Road built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-15 (SR-15) Sbl over SR-133 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 February 2023.

How much traffic does I-15 (SR-15) Sbl over SR-133 Intchg. X-Road carry?

About 16,820 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is I-15 (SR-15) Sbl over SR-133 Intchg. X-Road?

The structure is 183 ft (55.7 m) long with a longest span of 86 ft (26.2 m) and a deck 44 ft wide.

Who owns I-15 (SR-15) Sbl over SR-133 Intchg. X-Road?

It is owned by the State Highway Agency.