The state Department of Transportation has announced the next weekend closures of Route 7 in Ridgefield for a bridge replacement project.  The Ridgefield Press reports that part of Route 7 will be closed August 11th through 13th and August 18th through 20th.  Bridge abutments will be installed during the first August road closure and then precast deck units will be installed.  All traffic will be detoured to Main Street during the closure.  The bridge was determined to be functionally obsolete and rated in poor condition.