Unfortunately, it seems that there may be some confusion in the question as the coordinates provided are actually located in Mississippi, not Illinois. There is a boat ramp named Waverly Mansion Road located in Clay County, Mississippi, with the coordinates provided (latitude: 33.56639481, longitude: -88.49674225).

According to the website Mississippi Gulf Coast National Heritage Area, the Waverly Mansion Road boat ramp is located on the Luxapalila River, which flows into the Tombigbee River. The website states that the boat ramp is "suitable for small boats and canoes" and that it is a "primitive boat launch with no amenities."

Unfortunately, I was not able to find any specific information about the width of the boat ramp or any restrictions on the types of craft permitted on the water. It is possible that local regulations or signage at the launch site may provide more information.