Early type of rebar invented by Ernest L. Ransome, an early proponent of reinforced concrete structures.
This bar is usually indicative of a concrete structure being built prior to 1920.
See also category:
Alvord Lake Bridge
(San Francisco County, California)Built 1889 by Ernest L. RansomeReinforced concrete arch bridge over a pedestrian walkway at Golden Gate ParkOpen to traffic
Hammerquist Road Bridge
(Pennington County, South Dakota)Built 1916Concrete arch bridge over Rapid Creek on Hammerquist RoadOpen to traffic
Independence Street Bridge
(Cass County, Missouri)Built 1920Concrete tee beam bridge over Town Creek on Independence Street in HarrisonvilleOpen to traffic