The Interstate 15-Tropicana Avenue interchange, seen Jan. 31, 2019, is set for a $200 million u …

The Interstate 15-Tropicana Avenue interchange, seen Jan. 31, 2019, is set for a $200 million u ...

The Interstate 15-Tropicana Avenue interchange, seen Jan. 31, 2019, is set for a $200 million upgrade. Construction on the project is slated to begin in 2021 and finish in 2024. (Mick Akers/Las Vegas Review-Journal)