The project to widen State Route 260, 15 miles east of Payson, will reach a milestone Monday as the Arizona Department of Transportation begins paving of the westbound lanes of the new highway.
Work hours are 7 a.m. to 6 p.m., seven days a week for the next four weeks.
ADOT plans to switch traffic to the new roadway before the Thanksgiving holiday.
Drivers should be prepared for brief delays as large trucks are directed across the highway.
The project, which will upgrade the two-lane roadway to a four-lane divided highway between Little Green Valley and Thompson Draw, is scheduled for completion in fall 2011.
Information regarding the project is available on the toll-free project hotline at (877) 521-1118.