Materials: smaller bridges are concrete; larger bridges are
steel and concrete
Shape: usually massive, arch-shaped structures, especially
if made of reinforced concrete
Design features: pylons or obelisks decorating both ends of
the bridge and sometimes the middle. Many are art deco; some are Egyptian-inspired.
Another trademark is gothic or Romanesque arches, seen in handrails
or as part of the bridge foundation. Pedestrian walkways were often incorporated
into McCulloughs bridges. The largest bridges feature archways and stairways
leading from the road deck to the beach or pedestrian plazas.
