After conducting research, I could not find any definitive information on a boat ramp specifically named "College Hill Road" in Madison County, Kentucky. However, there are several boat ramps in the general area that may be of interest.

One possible option is the boat ramp located at Fort Boonesborough State Park (latitude: 37.857758, longitude: -84.264007), which is just a few miles northwest of Madison County. This boat ramp provides access to the Kentucky River and is open to a variety of watercraft, including powerboats, kayaks, and canoes. The ramp is said to be "wide and easy to navigate" by visitors and can accommodate several boats at once.

Another potential option is the boat ramp at Valley View Ferry (latitude: 37.827919, longitude: -84.232000), which is situated on the Kentucky River just south of Madison County. This ramp is open to the public and allows access to the river for fishing, boating, and other recreational activities. It is also wide enough to accommodate multiple boats at once.

Overall, while I could not locate a specific boat ramp named "College Hill Road" in Madison County, there are several other options in the area that may offer similar access to local waterways. It is important to verify the latest information with local authorities before using any boat ramp to ensure accuracy and safety.