The Connecticut Department of Transportation has started construction activities for the rehabilitation of the Rochambeau Bridge.  The structure carries Interstate 84 over the Lake Zoar section of the Housatonic River. The bridge also straddles the boundary between Newtown and Southbury.  Motorists are advised that two lanes of traffic in each direction will be maintained during peak periods, from 6 am to 8 pm, with lane closures only allowed at night.