The impending transformation of Doyle Drive into the Presidio Parkway has generated a fair amount of local press. Earth-moving and tree-cutting began this month. Starting in early 2010 and lasting for a year, a detour will affect the traffic shown in the center of this picture, where the small, green railing is visible: the direct connection from northbound Hwy 1 to eastbound Doyle Drive. That connection is to be closed, and motorists wanting to make that connection will leave Hwy 1 closer to the bridge and circle around in that area to get back onto Doyle Drive southbound. Marin motorists and Golden Gate Bridge officials are freaking out. This is a $1 billion dollar CalTrans project, and Ghilotti Brothers received a contract for work during the first phase.