I-15 (SR-15) NBL
I-15 (SR-15) NBL in 500 W.1600 No. Bountiful, Davis County, Utah received a condition grade of C (55/100). Built in 1959, the bridge carries 148K vehicles daily on I-15 (SR-15) NBL over Pages Lane 1600 North.
I-15 (SR-15) NBL carries a C on the BridgeSafety Condition Score with 55/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1959 and is now 67 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. I-15 (SR-15) NBL carries an average daily traffic count of 147,839 vehicles, with 5 lane(s) crossing Pages Lane 1600 North. 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 67-year-old bridge located 500 W.1600 No. Bountiful in Davis County, Utah. The bridge carries I-15 (SR-15) NBL over Pages Lane 1600 North with 5 traffic lanes, handling approximately 148K vehicles per day. Built in 1959 and reconstructed in 2011, the structure spans 40.8 meters.
The bridge received a Condition Grade of C (55/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 6/9 (fair), and substructure 6/9 (fair).
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 55/100 (Grade C). Its deck is rated 5/9, superstructure 6/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-15 (SR-15) NBL was built in 1959 and reconstructed in 2011, making it 67 years old. The average bridge age in the United States is 48 years.
I-15 (SR-15) NBL carries approximately 148K vehicles per day (average daily traffic). The bridge has 5 traffic lanes. It is 40.8 meters long and located on I-15 (SR-15) NBL in 500 W.1600 No. 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 W.1600 No. Bountiful in Davis County, Utah. The bridge carries I-15 (SR-15) NBL over Pages Lane 1600 North. Its coordinates are 40.906422, -111.891092. It is maintained by State Highway Agency.
I-15 (SR-15) NBL carries I-15 (SR-15) NBL over Pages Lane 1600 North. The bridge is 40.8 meters long and was built in 1959, with reconstruction in 2011.
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.