It will cost an estimated $8 million to tear down the remaining structures. Another $1.1 million is needed for the U.S. Department of Transportation to design a 28-foot-wide, 1,500-foot-long road to run through a nearby wooded section behind North and South Westwood roads to empty onto Route 8 heading to Seymour. It would take another $9 million to pay for the road’s construction, replacement of the bridge over the Naugatuck River leading from the parking lot to the factory buildings and extension of the Riverwalk to Seymour. Remediating brownfield sites — areas contaminated by industrial or commercial use — can be a way to give an economic boost to cities and towns, Murphy said. This year, Ansonia received $176,000 from the EPA/Naugatuck Valley Council of Governments for further remediation. Just last month, Gov. Ned Lamont and State Rep. Kara Rochelle, D-Ansonia, announced the state bonded $500,000 to demolish the adjacent defunct SHW Casting site which had two roof collapses in recent years.