CASA GRANDE, AZ (Tucson News Now) - Arizona Department of Transportation crews are beginning prep work as they get ready to widen part of I-10 in Casa Grande.
The project is taking place between I-8 and Earley Road, a stretch of highway that is currently two lanes in each direction.
Workers will add a lane on the inside of the freeway toward the median with a concrete barrier separating each side.
The project will also include building a new bridge over Jimmie Kerr Boulevard.
ADOT crews are also currently widening another stretch of I-10 in Eloy.
Both of these projects together means the interstate will eventually be six lanes wide all the way from Tucson to Casa Grande.
ADOT says this is good news for Tucsonans who travel to places like Phoenix often.
"This stretch of road as a two-lane freeway can get really really crowded and slow down very much. As a three-lane highway in each direction actually a six-lane freeway, you'll be able to flow much more easily, said ADOT spokesman Tom Herrmann.
The project in Eloy also includes a dust detection zone to help alert drivers during dust storms as the area is prone to wrecks attributable to low visibility during dust storms.
Both of the projects cost about $90 million, according to ADOT.
Herrmann says a $54 million federal gr ant helped pay for about half.
Crews hope to finish both projects in about 18 months.