If they repaired it and built a vehicle bridge they could use the tunnel exclusively for cable car service.

The grades were aligned for the cars to enter from a shallow subway just below street level.

[8] Both would be tied into another subway tunnel to be dug under Clinton Street, proposed in the interim.

[9] The only construction accomplished in advance of these plans was the pair of portals in the Eisenhower Expressway median, 200 feet east of Halsted Street, constructed in 1952 simultaneously with the pair of portals for the Blue Line,[10] and the double-wide station built at Peoria Street in 1964 to accommodate the anticipated platform north of the UIC-Halsted platform for the Blue Line.

[12] The plan was canceled in April 1962, although the design and placement of the Peoria Street station house went unchanged.