The Georgia Department of Transportation announced Tuesday bid awards on 13 new highway infrastructure improvement projects, including pavement rehabilitation projects on Interstates 16 and 20.

In west Chatham County, 11 miles of I-16 will have its concrete driving surface repaired or replaced. The work will take place between the area of the Little Ogeechee River and CSX Railroad overpass. Diamond Surface, Inc., of Maple Grove, Minn., will carry out the work for $5.4 million. Completion is expected in August 2015.

More than 42 miles of I-20 in Greene, Taliaferro, Warren and McDuffie counties will be rehabilitated similarly. The work will occur between Highway 44 in Greene and the Thomson Bypass in McDuffie. It will be performed by Interstate Improvement, Inc., of Fairbault, Minn., with a scheduled completion date of April 30, 2016.

A $12.6 million project is slated for Laurens County. Gregory Bridge Company, of Eatonton, will construct a new two-lane bridge across the Oconee River on Country Club Road, north of Dublin. It is expected to open to traffic by Sept. 30, 2016.

Information on schedules, lanes closures and any necessary detours will be made available in advance of construction activities.

Details on these and other newly awarded projects can be found through the Award Announcement Downloads link at https://www.bidx.com/ga/letting?lettingid=14091901.

Georgia DOT requests that motorists exercise caution at all times, especially in department work zones where workers and heavy equipment are in close proximity to roadways.