In 1955, the Baltimore and Ohio Station was demolished to make way for construction of the new freeway. In late 1956, it opened from the Boulevard of the Allies (then US 22/US 30) near the Birmingham Bridge east to Bates Street, with the eastbound lanes opening September 10 and westbound opening September 29. The other downtown sections opened in segments from January 17, 1958 to 1959, the total cost of the parkway at this time came to $112.107 million (1959 terms). The $6.305 million Fort Pitt Bridge opened June 19, 1959, followed by the $16 million Fort Pitt Tunnel on September 1, 1960, using the West End Bypass (PA 51) and Carson Street (PA 837) as detours until the Fort Pitt Tunnel opened. The Parkway East ended in Churchill, with eastbound traffic continuing ahead on the William Penn Highway, until the $11,124,763 extension east to the Pennsylvania Turnpike in Monroeville opened October 27, 1962. The final piece of Parkway West (the part which has never had an Interstate route number), from PA 60 west to the US 22/US 30 split at Imperial, opened in 1964. Early plans for that section would have instead taken it from PA 60 where it splits with PA 60 Bus. northwest to US 30 near Campmeeting Road at Clinton.