The local San Diego Trolley (http://www.sdmts.com/Trol...) light rail system serves La Mesa with two lines: the Orange Line travels through much of La Mesa, heading south through Lemon Grove and on to Downtown San Diego. The Green Line travels through the northern part of La Mesa, going west past SDSU and through Mission Valley to San Diego's Old Town. La Mesa has four trolley stations: Spring Street Orange Line only, La Mesa Blvd Orange Line only, Grossmont Transit Center Orange and Green Lines and Amaya Drive Orange and Green Lines.
