Motorists driving near Preston Road and the Sam Rayburn Tollway in Frisco and Plano may experience lane closures during overnight hours through Sept. 4.

As part of the Sam Rayburn Tollway Fourth Lane Project, the North Texas Tollway Authority plans to close various lanes near the Preston Road-Sam Rayburn Tollway intersection between 10 p.m. and 5 a.m. through Friday.

The closures will include various lanes of the northbound and southbound Preston Road flyover bridge, the U-turn lanes at Preston Road and various lanes of northbound and southbound Preston Road between the frontage roads in either direction.

An NTTA news release said all lanes will not be closed at one time. The agency said just one direction of Preston Road or the flyover ramp will be closed at a time. Message signs will be placed in the construction area prior to lane closures.

The $200 million project is constructing a fourth lane in each direction throughout the 26-mile tollway, which extends from west of Denton Tap Road in Coppell to US 75 in McKinney.

NTTA also issued the following information about detours for lane closures:

• Northbound and southbound Preston Road flyover detour will proceed through the intersection.

• Northbound Preston Road detour will turn right onto SH 121 and make a U-turn at Hillcrest Road/Rasor Boulevard to continue back Preston Road.

• Southbound Preston Road detour will turn right onto SH 121 and make a U-turn at Parkwood Boulevard to continue east back to Preston Road.

As part of its news release, NTTA urged drivers to use caution in the construction area.

For construction-related questions and concerns, NTTA offers a project hotline at 972-628-3134. Additional information about upcoming lane closures and traffic-related news is available at