I15N
I15N in N Spaghetti Bowl, Clark County, Nevada received a condition grade of A (89/100). Built in 2018, the bridge carries 160K vehicles daily on I15N over Us95.
I15N carries an A on the BridgeSafety Condition Score with 89/100. 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 2018 and is 8 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. I15N carries an average daily traffic count of 160,000 vehicles, with 4 lane(s) crossing Us95. 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
I15N is a 8-year-old bridge located N Spaghetti Bowl in Clark County, Nevada. The bridge carries I15N over Us95 with 4 traffic lanes, handling approximately 160K vehicles per day. Built in 2018, the structure spans 99.3 meters.
The bridge received a Condition Grade of A (89/100) based on Federal Highway Administration inspection data. Its deck is rated 8/9 (good), superstructure 8/9 (good), and substructure 8/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I15N has a Condition Score of 89/100 (Grade A). Its deck is rated 8/9, superstructure 8/9, and substructure 8/9 on the NBI scale. The bridge is not classified as structurally deficient.
I15N was built in 2018, making it 8 years old. The average bridge age in the United States is 48 years.
I15N carries approximately 160K vehicles per day (average daily traffic). The bridge has 4 traffic lanes. It is 99.3 meters long and located on I15N in N Spaghetti Bowl, Clark County, Nevada.
No, I15N is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I15N is located N Spaghetti Bowl in Clark County, Nevada. The bridge carries I15N over Us95. Its coordinates are 36.174347, -115.154883. It is maintained by State Highway Agency.
I15N carries I15N over Us95. The bridge is 99.3 meters long and was built in 2018.
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.