Preliminary work has begun to widen the Roswell Road bridge across I-285, the city of Sandy Springs announced.

Georgia Power crews have started moving power lines, the city said. Once that work is done, Comcast and AT&T also will move utility lines.

Construction is expected to being in July, weather permitting, and the project is to be completed by Oct. 31, 2012, the city said in a May 25 statement.

The project will widen the bridge to allow two left turn lanes which will run the length of the bridge. The project also will widen entrance ramps onto I-285, the city said.

The Georgia Department of Transportation recently awarded a $3.5 million construction contract to C.W. Matthews Contracting Co. Inc. for the project.