Similar to my answer to your other question, it would depend on what type of road association you have, what your bylaws say, and what the deeds say.  It may also depend on whether the road up to the dead end was originally built by a developer as a private road, with the limits shown on a subdivision plan, or if it was originally a town or county way that has been discontinued, and that once continued beyond the "dead end."  Again, contact Maine ROADWays for help with the research.