I-15 SR-97
I-15 SR-97 in Southeast Of Roy, Weber County, Utah received a condition grade of B (78/100). Built in 2024, the bridge carries 140K vehicles daily on I-15 SR-97 over Three Gates Trail.
I-15 SR-97 carries a B on the BridgeSafety Condition Score with 78/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 2024 and is 2 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-97 carries an average daily traffic count of 140,000 vehicles, with 12 lane(s) crossing Three Gates Trail. 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-97 is a 2-year-old bridge located Southeast Of Roy in Weber County, Utah. The bridge carries I-15 SR-97 over Three Gates Trail with 12 traffic lanes, handling approximately 140K vehicles per day. Built in 2024, the structure spans 9.9 meters.
The bridge received a Condition Grade of B (78/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-15 SR-97 has a Condition Score of 78/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-15 SR-97 was built in 2024, making it 2 years old. The average bridge age in the United States is 48 years.
I-15 SR-97 carries approximately 140K vehicles per day (average daily traffic). The bridge has 12 traffic lanes. It is 9.9 meters long and located on I-15 SR-97 in Southeast Of Roy, Weber County, Utah.
No, I-15 SR-97 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-97 is located Southeast Of Roy in Weber County, Utah. The bridge carries I-15 SR-97 over Three Gates Trail. Its coordinates are 41.157500, -112.024000. It is maintained by State Highway Agency.
I-15 SR-97 carries I-15 SR-97 over Three Gates Trail. The bridge is 9.9 meters long and was built in 2024.
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.