I-15 SBL
I-15 SBL in 14600 South, Salt Lake County, Utah received a condition grade of B (78/100). Built in 2016, the bridge carries 154K vehicles daily on I-15 SBL over SR-140; Bluffdale Road.
I-15 SBL 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 2016 and is 10 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 SBL carries an average daily traffic count of 153,590 vehicles, with 6 lane(s) crossing SR-140; Bluffdale Road. 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 SBL is a 10-year-old bridge located 14600 South in Salt Lake County, Utah. The bridge carries I-15 SBL over SR-140; Bluffdale Road with 6 traffic lanes, handling approximately 154K vehicles per day. Built in 2016, the structure spans 63.7 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 SBL 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 SBL was built in 2016, making it 10 years old. The average bridge age in the United States is 48 years.
I-15 SBL carries approximately 154K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 63.7 meters long and located on I-15 SBL in 14600 South, Salt Lake County, Utah.
No, I-15 SBL 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 SBL is located 14600 South in Salt Lake County, Utah. The bridge carries I-15 SBL over SR-140; Bluffdale Road. Its coordinates are 40.484378, -111.898936. It is maintained by State Highway Agency.
I-15 SBL carries I-15 SBL over SR-140; Bluffdale Road. The bridge is 63.7 meters long and was built in 2016.
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.