Based on the information available, the Barn Hill Road boat ramp in Shepherd, Texas is a public boat ramp. The width of the ramp is not specified in the available information. However, it is known to provide access to Lake Livingston, which is a 90,000-acre reservoir on the Trinity River. It is a popular location for recreational boating, fishing, and water sports.

According to the Texas Parks and Wildlife Department, the types of boats permitted on Lake Livingston include motorized boats, sailboats, kayaks, canoes, and other non-motorized watercraft. However, there may be specific regulations or restrictions on certain types of boats or activities depending on the location within the lake.

It is important to note that the information provided is accurate to the best of our knowledge based on the latest available resources, and that regulations and restrictions may change over time. It is always recommended to verify current regulations and requirements before using any boating facility or accessing any body of water.