A2 Tower
Chicago, Illinois
A2 tower was built by the Milwaukee Road in 1938 and built to the Pennsylvania Railroad specifications. The tower houses a Union Switch and Signal Company Model 14 interlocking machine. The machine is a electro-pneumatic interlocking machine with 83 lever spaces though not all the levers remain today.
Union Switch & Signal Company Model 14, 83 Lever Electro-Pneumatic Interlocking Machine.
Union Switch & Signal Company Model 14, 83 Lever Electro-Pneumatic Interlocking Machine.
