Mann Theatres plans to build 76 new state-of-the-art screens over the next year in seven locations in the L.A., San Francisco and Denver areas. The new theaters, which are concentrated in markets where Mann already has a presence, will bring the circuit’s total screens to 475.After a four-year period of no growth, Mann has over the last two years embarked on an accelerated theater-building strategy. The circuit’s largest facility to date, a 16-screen megaplex at Parker and Arapahoe Roads in southeastern Denver, is slated to open in the spring of 1997. At the same time, Mann will add two screens to its existing eightplex at the Exchange in Glendale. In time for the 1997 holiday season, the company plans to open a new 16-screen complex in Van Nuys at the former site of the General Motors assembly plant on Van Nuys Boulevard and Arminta Street; a 16-plex in the Pleasant Hill area in the San Francisco Bay Area; and a 14-plex in Golden, Colo. Mann also will build two smaller complexes, an eightplex in Agoura Hills at the corner of Agoura and Kanan Roads and a fourplex in Glendale at the corner of Brand Boulevard and Broadway. Each of the new Glendale auditoriums will seat 500. The announcement comes on the heels of the opening last month of an eight-screen Mann theater in Westlake Village; a 12-plex in Visalia; and a 14-plex in Arvada, Colo. Last December, the company opened three multiplexes in Colorado and California. Before that, the chain had not built a new theater since 1991. All auditoriums in the new complexes will be built to THX specifications and will feature multichannel digital stereo sound and curved screens. The theaters also will feature rocking-chair seats, cup-holder armrests and computerized advanced ticketing. Mann Theatres, a limited partnership owned jointly by Viacom and Time Warner, operates theaters in California, Arizona, Colorado and Alaska.