Original sentence: Besides the difficulty of crossing this far south, Morison was required to provide at least 75 feet clearance, have a main span of more than 770 ft for the main river channel.He was also required to provide for vehicular and pedestrian traffic on the same level as the rail traffic
Edited sentence: Its 65 foot height above the water was the highest clearance of any U.The bridge is built entirely of open-hearth steel, a newly developed material at the time of construction.The construction of the piers went nearly 100 feet below the water's surface.The structure features a 790 foot main span and two additional 600 foot spans.They remained in use until the Memphis & Arkansas Bridge opened in the early 1950s.When automobiles became common in the 1930s, two cantilevered roadways were added to the bridge, one on each side.bridge of that era