WHO WE ARE
WHAT WE DO
February 21, 2018
Siefert Associates, LLC has designed a temporary trestle currently in use at the Tappan Zee Bridge. The trestle was designed to support large cranes and creatively utilizes the substructure of the previously demolished bridge.
Progress on Our New White Plains, NY Office
June 4, 2019
Farley – Skanska USA Civil
May 21, 2018
Long Island Rail Road Expansion (3rd Track)
Dale Carnegie Leadership Graduates
November 12, 2019
10/5/2019 3rd Track Constructors
Nardozzi Place Steel Erection
October 28, 2019
Siefert Attends Conferences!
Don’t forget to Save the Date!
LIRR Expansion Project - South Tyson Avenue Bridge, Floral Park, NY
George Washington Bridge Sidewalk Replacement