3rd Track Constructors
Siefert Associates aided in the erection of the new Nassau 1 Interlocking east of Merillon Station Garden City as part of the third track...
LaGuardia Airport – Center Roadways
In April of 2020 Skanska-Walsh J.V. launched the first of two temporary bridges used during construction of the new LaGuardia Airport in...
GWB Barrier Replacement
Siefert Associates, LLC is continuing to work with Skanska USA Civil to provide construction engineering services related to the barrier...
New Arrival - Grayson James Orszulak!
Congratulations to Siefert Associates' Thomas Orszulak, geotechnical engineer extraordinaire, and his wife Krista on the birth of their...
Siefert Associates Works from Home!
Siefert Associates, LLC remains operational, delivering 110% efficiency working from home for the 5th week in a row! Everyone at Siefert...
Union Turnpike Demo - Bridge 6
Siefert Associates, LLC prepared working drawings for Halmar International, LLC for the demolition of Bridge 6 over the Union Turnpike in...