I-15 (SR-15) NBL
I-15 (SR-15) NBL 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) NBL over SR-68 500 South Street.
I-15 (SR-15) NBL 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) NBL carries an average daily traffic count of 157,594 vehicles, with 5 lane(s) crossing SR-68 500 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) NBL is a 11-year-old bridge located 500 So.Intchg. Bountiful in Davis County, Utah. The bridge carries I-15 (SR-15) NBL over SR-68 500 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) NBL 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) NBL was built in 2015, making it 11 years old. The average bridge age in the United States is 48 years.
I-15 (SR-15) NBL 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) NBL in 500 So.Intchg. Bountiful, Davis County, Utah.
No, I-15 (SR-15) NBL 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) NBL is located 500 So.Intchg. Bountiful in Davis County, Utah. The bridge carries I-15 (SR-15) NBL over SR-68 500 South Street. Its coordinates are 40.884211, -111.896444. It is maintained by State Highway Agency.
I-15 (SR-15) NBL carries I-15 (SR-15) NBL over SR-68 500 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.