Motorists should plan for overnight I-80 detours for two days in September

Published: Wednesday, Aug. 27, 2014 - 4:05 pm

Motorists planning to travel overnight on Interstate 80 for two days next month will have to take a 56-mile detour as part of the California Department of Transportation’s Raise 80 project.

The Magra overcrossing, approximately 4 miles east of Colfax, will be the first to be raised and will necessitate the detour for I-80 traffic between 11 p.m. and 5 a.m. Sept. 23 and 24. During those hours, all I-80 traffic – commercial and passenger – will be detoured onto the 56-mile corridor of Highways 49 and 20, said Rochelle Jenkins, a Caltrans spokeswoman.

Eastbound traffic will detour onto Highway 49 at Bell Road in Auburn. Westbound traffic can access Highway 20 about 20 miles west of Truckee.

“There are no other alternate routes for this particular structure,” Jenkins said.

The $36 million project will increase the vertical clearance of nine overcrossings on Interstate 80 between Magra and Loomis in south Placer County.

The I-80 on- and offramps at Magra Road and Rollins Lake Road are in the midst of a two-month closure, Aug. 1 to Oct. 1, while a contractor does structure work. Motorists have been advised to use the Secret Town interchange instead.

The Raise 80 Project’s purpose is to meet federal clearance standards for high-profile vehicles and national defense.

Six of the structures will have the bridge deck raised approximately 2 feet and three will have the roadway below lowered to achieve the necessary clearance.

Local traffic will be detoured all day and night during approximately 15 to 22 days per structure, according to a Caltrans public notice.

The project is expected to be completed in fall 2015.

Read more articles by Barbara Barte Osborn

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