At long last, another new leg of the BART system is about to see the light of day, this time on the Fremont line. The Warm Springs extension project, which will extend BART through the Irvington district of Fremont, under Stevenson Blvd. and the city's Central Park, to the Warm Springs district. As early as this Friday, traffic on Stevenson Blvd. will be reduced to one lane in each direction as digging begins on a 40-foot-wide trench that will eventually accommodate the train tunnel. See the full map below.

A second portion of the dig will start this summer, when part of Lake Elizabeth in Fremont's Central Park will be damned dammed and another trench dug there. Construction of the underground portions of the train line are expected to be complete by 2012, with the line operational by 2014. An optional Irvington Station stop, mid-way along the extension, is still dependent on further funding from the City of Fremont.