Unfortunately, I cannot provide accurate information about the boat ramp named Wisconsin River - Town of Caledonia - Access Off Dead End Town Rd in Illinois. This is because the given latitude and longitude coordinates are not in Illinois, but are actually located in Wisconsin. The Wisconsin River is a major river in the state of Wisconsin, and there are likely several boat ramps along its length.

Without additional information or clarification about the specific boat ramp in question, I cannot provide accurate details about its width, type, or permitted watercraft. It is important to use the correct location information when researching or discussing a particular boat ramp.