RFK Bridge Rehabilitation
In March 2020, Siefert Associates, LLC was selected by American Structural Works to provide construction engineering services for the RFK...
LIRR Expansion Project – New Nassau 1 Interlocking Crossover Installation
Siefert Associates, LLC continues to provide construction engineering services to 3rd Track Constructors JV. The project involves...
Long Island Railroad Carle Place Station
For over a year Siefert Associates has been involved with the 3rd Track expansion of the Long Island Railroad. The project involves 9.8...
Lechmere Viaduct Repair and Rehabilitation
Siefert Associates has recently begun work with SPS New England, Inc. providing structural analysis of the existing Lechmere Viaduct. The...
ASCE’s CI Summit
As Siefert Associates, LLC celebrates its 20th Anniversary this year, three of our engineers attended the Construction Institute Summit...
CR16 Horseblock Road Bridge Replacement, Suffolk County, NY
Siefert Associates provided Bove Industries with temporary SOE design services to facilitate foundation replacement adjacent to the LIRR....