The newly reconstructed Interstate 15/Tropicana interchange in Las Vegas has opened.
The Nevada Department of Transportation’s project reconstructed the Tropicana Avenue Bridge from three lanes to four lanes in each direction and added on and off ramps. The bridge was also raised to meet federal clearance standards and lengthened to accommodate future I-15 widening.
Work on the project began in 2022. The original I-15 Tropicana interchange was built in 1966, and today, the interchange sees over 60,000 vehicles per day.
Additionally, Dean Martin Drive’s arterial was realigned to flow under Tropicana Avenue, and a High Occupancy Vehicle half-interchange was built on the south side of Harmon Avenue to enhance traffic to and from the resort corridor.
Signal improvements on the interchange included installing retro-reflective black plates and advanced vehicle detector loops. Interstate 15 between Warm Springs and Flamingo Roads got Active Traffic Management signs and pavement rehabilitation, and wrong-way driver alert systems were installed at Tropicana and Harmon.
Ten-foot-wide sidewalks were also added in both directions on Tropicana Avenue.
The reconstruction project aims to improve traffic flow in and around the Tropicana interchange, improved travel time reliability on I-15 and Tropicana Avenue, enhance safety for drivers and pedestrians and improve air quality with free-flowing traffic.
The I-15 Tropicana Interchange project was sponsored by NDOT, the Regional Transportation Commission of Southern Nevada and the Federal Highway Administration. The $305 million design-builder contract was awarded to Kiewit Infrastructure West Co. in November 2021.
