If tough economic times test a company’s mettle, then Clark Construction Group can expect to remain a steadfast market leader for years to come. As the financial world breakdown continued and more new development opportunities eroded in 2009, the Bethesda, Md.-based contractor banked on a solid backlog of multi-year megaprojects and took in a record-setting $2.9 billion in regional revenue. Slide Show In the fall, Clark began construction on the $435-million 1.2-million-sq-ft U.S. Coast Guard Headquarters in Washington, which is partially funded through the American Recovery and Reinvestment Act. Related Links: Top Contractors Grunley Construction Co. Mid Eastern Builders Daniel