AMP: 9 Location: Quinebaug Rd and Railroad Ave, Dudley Welcome to Massachusetts! Route 131 heads through Southbridge and up to US 20 near the Mass Pike. AMP: 9 Location: Quinebaug Rd and Old Southbridge Rd, Dudley Reassurance shield as we enter The Bay State. AMP: 7 Location: Ashland Ave and Old Dudley Rd, Southbridge A … Continue reading Massachusetts Route 131, CT-131/CT State Line to MA 169