Siefert Associates, LLC (SALLC) has been providing erection engineering services for SPS New England Inc. during the bridge replacement...

Siefert Associates' Geotechnical Engineering Department is growing, and with it is our range of services! We are happy to provide...

Siefert Associates, LLC provided crane plans for the erection of LIRR’s new signal huts in Ronkonkoma, NY. Due to the long radius...

Siefert Associates, LLC has been providing erection engineering services for Stonebridge Inc. as they erect a new high-rise building in...

Demolition of the existing southbound I-95 viaduct in Providence, Rhode Island has begun by J.R. Vinagro Corporation using plans prepared...

We are pleased to announce that our geotechnical engineer Sabato Dalia has successfully completed his PE Certification process and is now...