Evening road construction is underway in Danbury on several roads.  The Public Works Department started the work Sunday night on Osborne Street, Germantown Road, Great Plain Road, Sandpit Road, Rockwell Road and Starr Road.  While there won't be any street closures, there is the possibility of travel restrictions and detours during this work period.  Construction should last approximately 3 to 4 weeks.  During that time on-street parking will be banned.