Construction in downtown Chickasha will keep motorists searching for alternate routes until at least early November.
The Oklahoma Department of Transportation started the $798,509 overlay project last week.
"It's too early to know if the project will finish ahead of schedule," ODOT Spokesperson Brenda Perry said.
The work will stretch across Choctaw Avenue from 2nd Street to 11th Street with the cross roads closing periodically.
Highway 81 will also experience some renovation from Choctaw Avenue to Minnesota Avenue.
Perry said most of the work will be done overnight, but some may seep into daytime.
She said drivers who frequent these streets should expect delays over the next two months.
"It's a resurfacing job, so the street closures are going to be very sporadic," she said.
The project is fully funded by ODOT, utilizing maintenance dollars. Perry said the city asked contractors to perform a traffic signal upgrade in the area valued at close to $10,000, which Chickasha will fund.
City Manager Stuart Fairburn said he was aware the project was going to start last week, but did not take notice of it until Monday.