 SR 9B crosses under the Maine Turnpike without an interchange (the nearest entrance is at Exit 19, accessible from SR 9/SR 109).SR 9B continues eastward until it intersects and ends at US 1.SR 9B used to be co-signed with US 1 from Charles Chase Corner (its current terminus) north to US 1's intersection with SR 9 in Wells, connecting SR 9B to its parent at both ends and making it a loop.