Based on the latest available information, the L-29 Miami-Dade County boat ramp is a concrete boat ramp that is approximately 25 feet wide. It provides access to the L-29 Canal, which is a man-made canal located in Miami-Dade County, Florida. The L-29 Canal is a part of the South Florida Water Management District's canal system, which helps to regulate water levels in the area.

According to the Miami-Dade County Parks, Recreation and Open Spaces Department, the L-29 Miami-Dade County boat ramp is suitable for small boats, canoes, and kayaks. The maximum allowable draft for boats using this ramp is 3 feet. Additionally, there are no restrictions on the type of motor that can be used on the water, but the speed limit in the canal is 25 mph.

It is important to note that regulations regarding the use of the L-29 Canal and the L-29 Miami-Dade County boat ramp may change, so it is always advisable to check with the appropriate authorities for the latest information before using the ramp.