1958 CHAP. 0598. AN ACT PROVIDING FOR THE CONSTRUCTION, MAINTENANCE, REPAIR AND OPERATION OF AN ADDITIONAL VEHICULAR TUNNEL BETWEEN BOSTON PROPER AND EAST BOSTON; CONFERRING UPON THE MASSACHUSETTS TURNPIKE AUTHORITY THE POWER AND DUTY TO CONSTRUCT, MAINTAIN, REPAIR AND OPERATE THE SAME; PROVIDING FOR THE FINANCING OF SUCH ADDITIONAL TUNNEL AND THE REFINANCING OF THE EXISTING TUNNEL; PROVIDING FOR THE TRANSFER TO SAID AUTHORITY OF SAID EXISTING TUNNEL; AND REPEALING CERTAIN EXISTING PROVISIONS OF LAW PERTAINING THERETO.