I apologize, but the information provided in the prompt is incorrect. The Wisconsin River is not located in Mississippi, it flows through the state of Wisconsin. Therefore, it is not possible to provide accurate information about the boat ramp named Wisconsin River - Mazo Town Boat Landing in Mississippi.

However, I can provide general information about boat ramps on the Wisconsin River. Boat ramps can vary in size and shape, but they are generally designed to allow boats and other watercraft to be launched into the water. The Wisconsin River is a popular destination for recreational boating, fishing, and other water-based activities.

The width of a boat ramp can also vary, but they are typically wide enough to accommodate a single vehicle and boat trailer. Some boat ramps may have multiple launch lanes to accommodate more traffic.

The Wisconsin River services a large area of central and northern Wisconsin, stretching approximately 430 miles from the northern part of the state to its confluence with the Mississippi River near Prairie du Chien. The river is a major tributary of the Mississippi River and is known for its scenic beauty and diverse wildlife.

A variety of watercraft are permitted on the Wisconsin River, including motorized boats, kayaks, canoes, and paddleboards. However, specific regulations may vary depending on the section of the river and local ordinances. It is important to check with local authorities before launching any watercraft on the Wisconsin River.