Job gains are widespread but still spotty. New research from the Associated General Contractors of America finds that construction employment gains have spread to more than two-thirds of the nation’s metro areas. Peppering the good news with cautious optimism, Ken Simonson, chief economist for the association, says there is growing risk that contractors in many regions will struggle to find qualified workers to complete the rising volume of projects. According to MDM.com, Houston-Sugar Land-Baytown, Texas added the largest number of construction jobs in the past year (13,500 jobs), followed by Los Angeles-Long Beach-Glendale, CA (10,100 jobs). Areas that sustained losses include Phoenix-Mesa-Glendale, AZ and Bethesda-Rockville-Frederick, Maryland.