I 15
I 15 in Las Vegas, Clark County, Nevada received a condition grade of A (85/100). Built in 2010, the bridge carries 189K vehicles daily on I 15 over D Street.
I 15 carries an A on the BridgeSafety Condition Score with 85/100. 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 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 carries an average daily traffic count of 189,000 vehicles, with 6 lane(s) crossing D 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 is a 16-year-old bridge located Las Vegas in Clark County, Nevada. The bridge carries I 15 over D Street with 6 traffic lanes, handling approximately 189K vehicles per day. Built in 2010, the structure spans 35 meters.
The bridge received a Condition Grade of A (85/100) based on Federal Highway Administration inspection data. Its deck is rated 8/9 (good), superstructure 7/9 (good), and substructure 8/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I 15 has a Condition Score of 85/100 (Grade A). Its deck is rated 8/9, superstructure 7/9, and substructure 8/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 15 was built in 2010, making it 16 years old. The average bridge age in the United States is 48 years.
I 15 carries approximately 189K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 35 meters long and located on I 15 in Las Vegas, Clark County, Nevada.
No, I 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 is located Las Vegas in Clark County, Nevada. The bridge carries I 15 over D Street. Its coordinates are 36.179578, -115.146894. It is maintained by State Highway Agency.
I 15 carries I 15 over D Street. The bridge is 35 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.