US Bridges

I-15 SB RP.FR.SR-6 over SR-156 Sp.Fork Main St.

Good

Utah County, Utah · Spanish Fork Interchg. · Structure no. 3C1001

Built
2011
14 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
164 ft
1 main span
Daily traffic
48,010
2014 count
Owner
State
State Highway Agency

About this bridge

I-15 SB RP.FR.SR-6 over SR-156 Sp.Fork Main St. is a steel stringer/multi-beam or girder carrying I-15 SB RP.FR.SR-6 over SR-156 Sp.Fork Main St. 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 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 48,010 vehicles a day, roughly 26% of them trucks, projected to reach 60,013 by 2034. The structure is 164 ft (50 m) long and 31 ft wide.

Location

Open in Google Maps
CarriesI-15 SB RP.FR.SR-6
CrossesSR-156 Sp.Fork Main St.
LocationSpanish Fork Interchg.
RouteInterstate 15
CountyUtah County
StateUtah
Coordinates40.12526, -111.65471
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length164 ft (50 m)
Longest span160 ft (48.9 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,010 (2014)
Projected traffic60,013 by 2034
Trucks26%
Lanes on structure1
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 SB RP.FR.SR-6 over SR-156 Sp.Fork Main St. built?

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

What condition is I-15 SB RP.FR.SR-6 over SR-156 Sp.Fork Main St. 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 2024.

How much traffic does I-15 SB RP.FR.SR-6 over SR-156 Sp.Fork Main St. carry?

About 48,010 vehicles per day (2014 count), of which roughly 26% are trucks.

How long is I-15 SB RP.FR.SR-6 over SR-156 Sp.Fork Main St.?

The structure is 164 ft (50 m) long with a longest span of 160 ft (48.9 m) and a deck 31 ft wide.

Who owns I-15 SB RP.FR.SR-6 over SR-156 Sp.Fork Main St.?

It is owned by the State Highway Agency.