Invitation to prequalified contractors to bid, opening date 11.03.2010, for construction of new 5.63 km-long, 2.7-3.3 m-ID Irvington tunnel, estimated value EUR184 million (USD251 million). Contract award April/May, 2010 for start June, 2010 and completion May, 2014. Visit tunnelbuilder archive us/49 for project background, and www.sfwater.org for update. 07/10.
