The latest phase of Project Neon begins tonight on U.S. 95.
NDOT's calling the traffic adjustment "The Big Squeeze," as it will reduce the 95 to two lanes in both directions from Rancho Drive to the Spaghetti Bowl.
All traffic will be shifted to the southbound lanes from tonight until July.
On Wednesday, access from the 95 northbound to Rancho Drive will also be closed as part of "The Big Squeeze."
NDOT is urging drivers to use what's called "zipper merging" during the project.
It's where vehicles take turns moving into lanes of traffic as they decrease.
"The Big Squeeze" is the first phase of this part of Project Neon, which is meant to alleviate traffic near the Spaghetti Bowl.
Come this summer, all traffic on the 95 will be reshifted back onto the northbound lanes alone between Rancho Drive and the Spaghetti Bowl until January 2018.
At that time as well, the 95 southbound to I-15 North will be closed.