Main Page | See live article | Alphabetical index New Jersey State Highway 181 is a state highway in New Jersey, United States. It is an old section of New Jersey State Highway 15 that was bypassed in 1974. Its northern end is at an intersection with NJ 15 in Sparta, New Jersey; its southern end is at another intersection with NJ 15 in Jefferson, New Jersey. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.