 Plans to construct the first segment of the W.A.T.S.freeway, the Sherbrook-McGregor Overpass, were continually delayed during the 1970s as the City studied the option of having the CP railyards moved.In 1979 it was estimated to cost about the same to relocate the CP railyards, C33.7 million, as it would be to construct three projects Sherbrook-McGregor Overpass, replace the Arlington Bridge, and upgrade the Salter Street Bridge at C$32.5 million.