After conducting research, I was unable to find any reliable information about a boat ramp named Nitschke Road in Lincoln County, Washington. It is possible that the boat ramp may be a local or lesser-known facility, but without more information, it is difficult to determine its characteristics, such as width and permitted watercraft.

It is important to note that accurate and up-to-date information about boat ramps is crucial for boaters' safety and the protection of the environment. Boaters should always research and verify information about boat ramps before using them to ensure that they are suitable for their needs and comply with any local regulations.