SUSSEX COUNTY - Road reconstruction will close down several county roads and cause delays on others this summer, but residents can keep themselves informed with the Sussex County Department of Public Works Web site, http://www.sussex.nj.us. In addition, the county plans to resurface County Route 519 and a two-mile section of County Route 651 in Wantage; portions of Lime Crest Road and County Route 606 in Andover; a section of County Route 605 in Hopatcong; and Route 517 between Routes 23 and 94 in Hardyston. The resurfacing projects will last about a week per project. The schedule of closings is reproduced below left. The maps, clockwise from bottom left, show road closings in Wantage, Branchville, Sparta, Byram and Stillwater.