Ransome rebar

Early type of rebar invented by Ernest L. Ransome, an early proponent of reinforced concrete structures.

http://www.oldstructures.com/2015/01/21/ransome-bar/

https://en.wikipedia.org/wiki/Ernest_L._Ransome

https://archive.org/details/reinforcedconcr01saurgoog

This bar is usually indicative of a concrete structure being built prior to 1920.

See also category: http://bridgehunter.com/category/builder/ernest-l-ransome/

Alvord Lake Bridge (San Francisco County, California)
Built 1889 by Ernest L. Ransome
Reinforced concrete arch bridge over a pedestrian walkway at Golden Gate Park
Open to traffic

BNSF - Eagle Avenue Overpass (Carroll County, Iowa)
Built 1913
Concrete Slab Bridge over Eagle Avenue on BNSF Railway
Open

Hammerquist Road Bridge (Pennington County, South Dakota)
Built 1916
Concrete arch bridge over Rapid Creek on Hammerquist Road
Open to traffic

Independence Street Bridge (Cass County, Missouri)
Built 1920
Concrete tee beam bridge over Town Creek on Independence Street in Harrisonville
Open to traffic

West Farmersville Road Bridge (Lancaster County, Pennsylvania)
Built 1917
Concrete curved chord through girder bridge over Conestoga River on West Farmersville Road (PA-1010)
Demo started Feb, 2019. Replacement underconstruction.