 When the federal government approved the Federal Aid Highway Act of 1956, Ziegler and the MSHD announced plans for a full freeway to run north through the Lower Peninsula and continue across to the Upper Peninsula.This announcement undermined the efforts to build the Michigan Turnpike.By August 1956, the MTA voted to reduce its operations to a skeleton staff, but moved forward in May 1957 on a bond sale to finance construction of the roadway.