US Bridges

US-89SB (SR-89) over I-15 (SR-15)

Good

Davis County, Utah · So. Edge of No. Salt Lake · Structure no. 3F 780

Built
2010
15 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
301 ft
2 main spans
Daily traffic
—
2023 count
Owner
State
State Highway Agency

About this bridge

US-89SB (SR-89) over I-15 (SR-15) is a prestressed concrete continuous stringer/multi-beam or girder carrying US-89SB (SR-89) over I-15 (SR-15) in Davis County, Utah. It was built in 2010, so it is 15 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.

No traffic count is recorded. The structure is 301 ft (91.7 m) long and 46 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS-89SB (SR-89)
CrossesI-15 (SR-15)
LocationSo. Edge of No. Salt Lake
RouteU.S. Route 89
CountyDavis County
StateUtah
Coordinates40.83352, -111.91519
Functional classUrban Other Principal Arterial

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.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length301 ft (91.7 m)
Longest span145 ft (44.3 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo
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 US-89SB (SR-89) over I-15 (SR-15) built?

It was built in 2010, making it 15 years old in 2025.

What condition is US-89SB (SR-89) over I-15 (SR-15) 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 June 2023.

How much traffic does US-89SB (SR-89) over I-15 (SR-15) carry?

No traffic count is recorded for this structure.

How long is US-89SB (SR-89) over I-15 (SR-15)?

The structure is 301 ft (91.7 m) long with a longest span of 145 ft (44.3 m) and a deck 46 ft wide.

Who owns US-89SB (SR-89) over I-15 (SR-15)?

It is owned by the State Highway Agency.