About 26,000 vehicles travel along this 3.2-mile section of Route 20 through Charlton and Oxford each day. MassDOT is redesigning and reconstructing Route 20 in Charlton and Oxford to improve safety and traffic operations Proposed work includes widening the roadway, replacing bridges over the Little River and the French River, adding sidewalks and shared use paths, installing a median barrier, improving safety and traffic operations at various intersections, and enhancing stormwater treatment.