LAS VEGAS (KLAS) — Drivers should prepare for the closure of I-15 near Tropicana Avenue over the weekend. The freeway will be completely closed starting at 10 p.m. between Flamingo and Russell roads and won’t reopen until Monday, Jan. 30, at 5 a.m, according to the Nevada Department of Transportation.

This phase of the construction will be the most impactful and will include the destruction of the Tropicana bridge over I-15.

Motorists should expect traffic delays. Detour signs will be posted at Flamingo and Russell. Drivers are also advised to use navigation apps before getting on the road to determine the best alternative route.

The major road construction project involves widening Tropicana, constructing new bridges, realigning Dean Martin Road under I-15, making pedestrian improvements, and adding new lighting.

One week ago, the I-15 on and offramps to Tropicana were closed to begin demolition of the flyover ramp. The offramps will remain closed for several months but Tropicana is scheduled to reopen Monday but will be reduced to two lanes in each direction.

NDOT said it has come out with an app that drivers can download to keep up to date with construction. Just search for Nevada DOT or the I15Trop app. There is also a webpage set up with information at this link.

NDOT said it has also worked with officials in California, Utah and Arizona to warn tourists of the closure. The project which costs more than $300 million won’t be finished until 2025.