Coleman bridge
Double-swing-span
Unique building techniques
Bridges are interesting from all angles.
“The two center swing spans are 500 foot long cantilevered trusses, while the remaining portions are plate girder spans varying in height from 27 to 40 feet. The substructure contains six river piers, the longest of which is 100 ft. deep, that are founded on hollow caissons which spread loads across the soft marl of the riverbed.” – Scott M. Kozel