New Mexico State Road 329
State Road 329 (NM 329) is a state highway in the US state of New Mexico. NM 329's southern terminus is at Interstate 25 Business (I-25 Bus.) in Las Vegas, and the northern terminus is a continuation as Mills Avenue at NM 65 in Las Vegas. History. The Mills Avenue portion of NM 329, from the junction of NM 65 (Hot Springs Boulevard) eastward to the junction of I-25 Bus., was transferred to the City of Las Vegas in a road exchange agreement dated August 11, 1992.