Construction of the new Twinbrook Quarter development has made significant progress in the past couple of months on Rockville Pike. But the tenant everyone is waiting for — an 80,0000-square-foot Wegmans grocery store — still hasn’t begun its buildout. A spokesman tells us Wegmans is looking to start construction this spring, with a projected opening in 2025. The uber-popular grocery store will be the jewel of Twinbrook Quarter, a sprawling retail/residential/office project that will ultimately encompass 18 acres.