The Green Valley Ranch Resort, Spa and Casino located in Las Vegas, Nevada has been in operation for several years and is considered to be one of the premier resort destinations in Las Vegas. Its growing success led to a recent expansion to the casino which required additional parking. Part of the current parking was provided in a two-level structure adjacent to the casino. The lower level of the existing structure was used primarily for valet with the upper level (casino entry level) for self parking. It was concluded that an additional 521,521 s.f. and 1500 spaces for parking could be provided by adding three levels to a portion of the existing structure. Using the same poured-in-place, post-tensioned concrete beam and slab construction, the Mediterranean style structure emulates the architecture of the casino.