Originally Posted by MarketStEl

AFAIK, there are no track diagrams for the trolley tunnel, for no tracks ever led into it.

Early architects' drawings of the Ben Franklin Bridge, some of which I have seen but can't recall where right now, depict a cross-section at the anchorages with four tracks and five vehicluar travel lanes -- the two tracks outboard of the main deck were to carry rapid transit, as they do now, and the two on the edges of the road deck were to carry trolley tracks.

If you sit on the left side of a PATCO train and look to your left as the train passes through the anchorages, you will see a small platform and staircase opening between your train and the road deck. This was to have been the platform for the trolley stations in the anchorages -- each has one. The waiting room is located one level down inside the anchorage, and elevators on each side in each anchorage connect this waiting room to both the ground level and the pedestrian walkways two levels up. I've heard from people who have been inside them that the stations are very handsome and richly appointed. The last time any member of the general public saw the inside of them was on the bridge's 75th anniversary in 2001, when the bridge was closed to traffic for an entire Sunday morning for displays and tours, including tours of the anchorages. I got there too late to go on one.