I-15 (SR-15) SBL
I-15 (SR-15) SBL in 500 So.Intchg. Bountiful, Davis County, Utah received a condition grade of A (81/100). Built in 2015, the bridge carries 158K vehicles daily on I-15 (SR-15) SBL over 500 South Street.
I-15 (SR-15) SBL carries an A on the BridgeSafety Condition Score with 81/100. Deck, superstructure, and substructure ratings all sit in the better tier of the FHWA NBI distribution. The bridge is structurally sound by federal standards.
The bridge was built in 2015 and is 11 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. I-15 (SR-15) SBL carries an average daily traffic count of 157,594 vehicles, with 5 lane(s) crossing 500 South Street. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
I-15 (SR-15) SBL is a 11-year-old bridge located 500 So.Intchg. Bountiful in Davis County, Utah. The bridge carries I-15 (SR-15) SBL over 500 South Street with 5 traffic lanes, handling approximately 158K vehicles per day. Built in 2015, the structure spans 35.1 meters.
The bridge received a Condition Grade of A (81/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 8/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-15 (SR-15) SBL has a Condition Score of 81/100 (Grade A). Its deck is rated 7/9, superstructure 8/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-15 (SR-15) SBL was built in 2015, making it 11 years old. The average bridge age in the United States is 48 years.
I-15 (SR-15) SBL carries approximately 158K vehicles per day (average daily traffic). The bridge has 5 traffic lanes. It is 35.1 meters long and located on I-15 (SR-15) SBL in 500 So.Intchg. Bountiful, Davis County, Utah.
No, I-15 (SR-15) SBL is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I-15 (SR-15) SBL is located 500 So.Intchg. Bountiful in Davis County, Utah. The bridge carries I-15 (SR-15) SBL over 500 South Street. Its coordinates are 40.884211, -111.896444. It is maintained by State Highway Agency.
I-15 (SR-15) SBL carries I-15 (SR-15) SBL over 500 South Street. The bridge is 35.1 meters long and was built in 2015.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.