After conducting an online search, I was unable to find any information regarding a boat ramp named Old Dam Road 1-457 in Mulberry, Tennessee with the provided latitude and longitude coordinates. It is possible that the coordinates provided are inaccurate or outdated. Additionally, it is also possible that the boat ramp may be a local or privately owned facility, thus not listed in public databases.

Without further information, it is impossible to determine what kind of boat ramp Old Dam Road 1-457 is, how wide it is, what body of water it services, and what kind of watercraft are permitted on the water. It is important to note that before using any boat ramp or body of water, individuals should confirm rules and regulations, as well as any necessary permits or fees required.