I-15 NB (SR-15)
I-15 NB (SR-15) in At The 114th South Intchg, Salt Lake County, Utah received a condition grade of B (78/100). Built in 2010, the bridge carries 160K vehicles daily on I-15 NB (SR-15) over SR-175 11400 So. ST..
I-15 NB (SR-15) 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 2010 and is 16 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 NB (SR-15) carries an average daily traffic count of 159,640 vehicles, with 5 lane(s) crossing SR-175 11400 So. ST.. 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 NB (SR-15) is a 16-year-old bridge located At The 114th South Intchg in Salt Lake County, Utah. The bridge carries I-15 NB (SR-15) over SR-175 11400 So. ST. with 5 traffic lanes, handling approximately 160K vehicles per day. Built in 2010, the structure spans 65.5 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 NB (SR-15) 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 NB (SR-15) was built in 2010, making it 16 years old. The average bridge age in the United States is 48 years.
I-15 NB (SR-15) carries approximately 160K vehicles per day (average daily traffic). The bridge has 5 traffic lanes. It is 65.5 meters long and located on I-15 NB (SR-15) in At The 114th South Intchg, Salt Lake County, Utah.
No, I-15 NB (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-15 NB (SR-15) is located At The 114th South Intchg in Salt Lake County, Utah. The bridge carries I-15 NB (SR-15) over SR-175 11400 So. ST.. Its coordinates are 40.543947, -111.894375. It is maintained by State Highway Agency.
I-15 NB (SR-15) carries I-15 NB (SR-15) over SR-175 11400 So. ST.. The bridge is 65.5 meters long and was built in 2010.
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.