In April 2019, Tappan Zee Constructors’ crews successfully installed the 200-foot super gantry at the Mario M. Cuomo Bridge over NY’s...

Siefert Associates continues to provide construction engineering services at LaGuardia Airport in Queens, NY for Skanska Walsh JV....

SPS New England is continuing to make progress on the I-495 bridge replacement in Haverhill, MA. Temporary support towers on the north...

At the Verrazzano-Narrows Bridge in New York, Siefert Associates provided plans to American Bridge Company for a temporary cable access...

Siefert Associates, LLC is providing construction engineering design services to facilitate new bridge construction in Waterbury, CT. ...

January 2018: Siefert Associates, LLC continues to provide on-site engineering support for Restani Construction Corporation at the Henry...

In February 2018, I-84 Constructors' crews successfully erected the girders of Hamilton Avenue over I-84 (site 1) in Waterbury, CT per...