FAQs

Learn everything from the history of the Tropicana Interchange to how the finished project will improve your commute. Don’t see what you are looking for? Go to the Contact page and send us your question via the comment form.

What is the total cost of the project?

The total cost is $305 million.

Where is the funding coming from?

In 2020, NDOT received a $50 million grant for the Tropicana Interchange project from the U.S. Department of Transportation. The project will be further funded by additional federal dollars as well as state funds.

Why is it necessary to replace the Tropicana bridge?

The height of the Tropicana bridge, built in the 1960s, no longer meets the federal height requirements for commercial vehicles. As a part of this project, the bridge height will be raised. The bridge also needs to be lengthened to accommodate future widening of I-15. The new bridge will also increase capacity of the Tropicana interchange, reconfigure the northbound collector-distributor road’s entrance to I-15 and address the need for HOV access to I-15 separate from Tropicana Avenue.

Will more flyovers be added to the interchange?

No. Due to the location of the project, in a densely developed area with a small footprint, there is not enough space to construct additional flyovers.

How long will construction last?

The project is scheduled to be completed in late 2025.

How will my commute improve once the Tropicana Interchange is completed?

The removal of the traffic signal at Tropicana and Dean Martin Drive will significantly improve traffic flow along the corridor. Dean Martin Drive will be reconfigured to run underneath Tropicana Avenue, again enhancing traffic flow. An HOV half-interchange on the south side of Harmon Avenue will offer more options for motorists leaving the resort corridor and nearby venues. Additional improvements that will address congestion include expanding Tropicana Avenue from three lanes to four in each direction between Las Vegas Boulevard and Polaris Avenue, increasing the left-turning lanes from Tropicana Avenue to southbound I-15 from two lanes to three, expanding the collector-distributor entrance to northbound I-15 from one lane to two and increasing capacity on the slip ramp to Arena Drive by adding a new lane.

Who is the designer/contractor?

In November 2021, the NDOT Board of Directors awarded the Tropicana Interchange contract to Kiewit Infrastructure West Co.

How old is the Tropicana Interchange?

The interchange opened in 1966. In the mid-1990s, NDOT widened the bridge to three lanes in each direction.

How will the project keep me informed of impacts?

You can stay updated on the project via Twitter, Facebook and Instagram, sign up for emails ([email protected]) or request updates via text messages. If you have questions regarding the project, you can call the project hotline at 702-876-TROP or stay updated using our app, i15trop, that is available free on the App Store and Google Play Store.