Dolores Park Works just published this map along with official details on the closures, which are mere weeks away. And some activity even starts this coming Monday:
Construction workers will be on-site between May 23rd and June 1st installing a new temporary access driveway into the park just south of the intersection of Dolores and 19th Street for use by service vehicles while the main driveway is closed for the playground construction project. This construction activity will result in the installation of a temporary safety barricade immediately around the area of work. Bauman Landscape Construction is expected to begin staging and performing pre-construction activities during the first week of June.