 The bridge was originally envisioned as a curved bridge with a 1°30" curve that would have allowed speeds of 80 mph (129 km/hr).But the design was altered to include a tangent (straight) stretch of track across the bridge, a 1°30" curve on the New Jersey side and a 3°30" curve on the Pennsylvania side of the bridge.This tighter curve required trains to slow to 50 mph (80 km/hr).