On the site of the old Columbian Paper Company in Bristol. These were supports for a Norfolk & Western railroad loading ramp at the plant. This ramp was made for very heavy loads. The first arch (at the other end) has a 1931 date formed in the concrete. Oh, wait, here’s a shot of it now (taken with my VERY CRAPPY cell phone camera…I always have a good camera with me, well, except for this day):