US Bridges

I-15SB (SR-15) over 820 North Street

Fair

Utah County, Utah · 1800 West 820 No. Provo · Structure no. 3F 824

Built
2011
14 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
126 ft
1 main span
Daily traffic
179,133
2023 count
Owner
State
State Highway Agency

About this bridge

I-15SB (SR-15) over 820 North Street is a prestressed concrete stringer/multi-beam or girder carrying I-15SB (SR-15) over 820 North Street in Utah County, Utah. It was built in 2011, so it is 14 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 179,133 vehicles a day, roughly 22% of them trucks, projected to reach 214,960 by 2043. The structure is 126 ft (38.5 m) long and 117 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-15SB (SR-15)
Crosses820 North Street
Location1800 West 820 No. Provo
RouteInterstate 15
CountyUtah County
StateUtah
Coordinates40.24506, -111.69529
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length126 ft (38.5 m)
Longest span123 ft (37.5 m)
Deck width117 ft (35.6 m)
Roadway width117 ft (35.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic179,133 (2023)
Projected traffic214,960 by 2043
Trucks22%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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-15SB (SR-15) over 820 North Street built?

It was built in 2011, making it 14 years old in 2025.

What condition is I-15SB (SR-15) over 820 North Street 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-15SB (SR-15) over 820 North Street carry?

About 179,133 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I-15SB (SR-15) over 820 North Street?

The structure is 126 ft (38.5 m) long with a longest span of 123 ft (37.5 m) and a deck 117 ft wide.

Who owns I-15SB (SR-15) over 820 North Street?

It is owned by the State Highway Agency.