Reconstruction of 5 miles of Interstate 40 will begin Monday with eastbound lanes, just west of Williams in northern Arizona. The $34 million project will deal with the westbound lanes next summer.

The Arizona Department of Transportation says the project will rebuild the roadway from the ground up, including laying a new foundation. ADOT says the stretch of roadway, not far from the Grand Canyon, has taken a beating over many winters.

Drivers heading east on I-40 toward Williams and Flagstaff will cross the median on a temporary road and share lanes with Westbound I-40 traffic through the construction area, with one lane of travel in each direction. Drivers should slow down and budget for extra travel time.