US Bridges

I-15NB (SR-15) over SR-39 12th St. in Ogden

Fair

Weber County, Utah · 12th St. Intchg. in Ogden · Structure no. 1F 746

Built
2008
17 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
151 ft
1 main span
Daily traffic
78,486
2017 count
Owner
State
State Highway Agency

About this bridge

I-15NB (SR-15) over SR-39 12th St. in Ogden is a prestressed concrete stringer/multi-beam or girder carrying I-15NB (SR-15) over SR-39 12th St. in Ogden in Weber County, Utah. It was built in 2008, so it is 17 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 78,486 vehicles a day, roughly 34% of them trucks, projected to reach 94,183 by 2037. The structure is 151 ft (45.9 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-15NB (SR-15)
CrossesSR-39 12th St. in Ogden
Location12th St. Intchg. in Ogden
RouteInterstate 15
CountyWeber County
StateUtah
Coordinates41.24444, -112.01556
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
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 rating62.2 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length151 ft (45.9 m)
Longest span147 ft (44.7 m)
Deck width65 ft (19.8 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78,486 (2017)
Projected traffic94,183 by 2037
Trucks34%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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-15NB (SR-15) over SR-39 12th St. in Ogden built?

It was built in 2008, making it 17 years old in 2025.

What condition is I-15NB (SR-15) over SR-39 12th St. in Ogden 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 August 2023.

How much traffic does I-15NB (SR-15) over SR-39 12th St. in Ogden carry?

About 78,486 vehicles per day (2017 count), of which roughly 34% are trucks.

How long is I-15NB (SR-15) over SR-39 12th St. in Ogden?

The structure is 151 ft (45.9 m) long with a longest span of 147 ft (44.7 m) and a deck 65 ft wide.

Who owns I-15NB (SR-15) over SR-39 12th St. in Ogden?

It is owned by the State Highway Agency.