According to the latest information available, the boat ramp named Southwest 8th Street 29701, Miami, is a public boat ramp located on the south side of the Miami River. It is a concrete ramp with a width of approximately 20 feet. The ramp provides access to the Miami River, which flows into Biscayne Bay and ultimately into the Atlantic Ocean.

The boat ramp is suitable for small to medium-sized boats, such as fishing boats, pleasure boats, and jet skis. However, larger boats may have difficulty launching from this ramp due to its narrow width. The water depth at the ramp varies depending on the tide, but it is generally deep enough for most small boats.

It's important to note that there are no parking facilities available at Southwest 8th Street 29701 boat ramp, and parking on the street may be limited. Users may need to park their vehicles and trailers at a nearby parking lot and walk or shuttle to the ramp.

In conclusion, Southwest 8th Street 29701 boat ramp is a public boat ramp located on the south side of the Miami River in Florida. It is suitable for small to medium-sized boats and provides access to the Miami River, which flows into Biscayne Bay and the Atlantic Ocean. The ramp is 20 feet wide, and there are no parking facilities available on-site.