I-15NB (SR-15)
I-15NB (SR-15) in At 100 West 300 South, Utah County, Utah received a condition grade of B (74/100). Built in 2011, the bridge carries 210K vehicles daily on I-15NB (SR-15) over American Fork Creek.
I-15NB (SR-15) carries a B on the BridgeSafety Condition Score with 74/100. 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 2011 and is 15 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-15NB (SR-15) carries an average daily traffic count of 209,636 vehicles, with 6 lane(s) crossing American Fork Creek. 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-15NB (SR-15) is a 15-year-old bridge located At 100 West 300 South in Utah County, Utah. The bridge carries I-15NB (SR-15) over American Fork Creek with 6 traffic lanes, handling approximately 210K vehicles per day. Built in 2011, the structure spans 22.2 meters.
The bridge received a Condition Grade of B (74/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), 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-15NB (SR-15) has a Condition Score of 74/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-15NB (SR-15) was built in 2011, making it 15 years old. The average bridge age in the United States is 48 years.
I-15NB (SR-15) carries approximately 210K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 22.2 meters long and located on I-15NB (SR-15) in At 100 West 300 South, Utah County, Utah.
No, I-15NB (SR-15) 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-15NB (SR-15) is located At 100 West 300 South in Utah County, Utah. The bridge carries I-15NB (SR-15) over American Fork Creek. Its coordinates are 40.368394, -111.797125. It is maintained by State Highway Agency.
I-15NB (SR-15) carries I-15NB (SR-15) over American Fork Creek. The bridge is 22.2 meters long and was built 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.