David W. Flickwir

[2] An 1876 Philadelphia business directory lists Flickwir as a consulting civil engineer.

[2] In 1908, Flickwir's company received a contract from the Delaware, Lackawanna and Western Railroad (DL&W) to build Section 3 of the Lackawanna Cut-off, a rail line that would run from northwestern New Jersey to northeastern Pennsylvania.

The Flickwir company would build the line from mileposts 50.2 to 55.8, as measured from the DL&W's Hoboken Terminal, a stretch that required the construction of Wharton Fill, Roseville Tunnel, Colby Cut, and the eastern half of the mammoth Pequest Fill.

During this project, Flickwir worked with Lincoln Bush, the Lackawanna's chief engineer.

[4][5] From 1912 to 1915, Flickwir & Bush built the DL&W's Tunkhannock Viaduct, a concrete deck arch bridge that spans the Tunkhannock Creek in Nicholson, Pennsylvania, in the United States, as part of the Nicholson Cutoff project.

[7] In 1916, Flickwir was elected a director of the Norfolk and Western Railroad company succeeding Walter H. Taylor (1838-1916).