I-15 (SR-15) SBL
I-15 (SR-15) SBL in 550 West 800 So.ST. Slc., Salt Lake County, Utah received a condition grade of A (81/100). Built in 2001, the bridge carries 218K vehicles daily on I-15 (SR-15) SBL over 800 South Street.
I-15 (SR-15) SBL carries an A on the BridgeSafety Condition Score with 81/100. Deck, superstructure, and substructure ratings all sit in the better tier of the FHWA NBI distribution. The bridge is structurally sound by federal standards.
The bridge was built in 2001, making it 25 years old — past the early-life period but still well within typical service life. Routine inspections and modest repair work are normal for bridges in this age band. I-15 (SR-15) SBL carries an average daily traffic count of 217,800 vehicles, with 7 lane(s) crossing 800 South Street. 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) SBL is a 25-year-old bridge located 550 West 800 So.ST. Slc. in Salt Lake County, Utah. The bridge carries I-15 (SR-15) SBL over 800 South Street with 7 traffic lanes, handling approximately 218K vehicles per day. Built in 2001, the structure spans 51 meters.
The bridge received a Condition Grade of A (81/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 8/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-15 (SR-15) SBL has a Condition Score of 81/100 (Grade A). Its deck is rated 7/9, superstructure 8/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-15 (SR-15) SBL was built in 2001, making it 25 years old. The average bridge age in the United States is 48 years.
I-15 (SR-15) SBL carries approximately 218K vehicles per day (average daily traffic). The bridge has 7 traffic lanes. It is 51 meters long and located on I-15 (SR-15) SBL in 550 West 800 So.ST. Slc., Salt Lake County, Utah.
No, I-15 (SR-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 (SR-15) SBL is located 550 West 800 So.ST. Slc. in Salt Lake County, Utah. The bridge carries I-15 (SR-15) SBL over 800 South Street. Its coordinates are 40.752314, -111.911281. It is maintained by State Highway Agency.
I-15 (SR-15) SBL carries I-15 (SR-15) SBL over 800 South Street. The bridge is 51 meters long and was built in 2001.
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.