Shepard Pond Dam | Canton, MA

SA inspected and evaluated Shepard Pond Dam, including grouting to test embankment permeability, designed repairs and a labyrinth spillway to pass the 100-year flood, and oversaw dam reconstruction. The Dam was originally constructed in 1880.

Bridge over the Androscoggin River | Bethel, ME

SA evaluated geotechnical conditions and designed pile foundations subject to destructive scour and ice forces for this 3-span bicycle, pedestrian, snowmobile and emergency vehicle bridge crossing the Androscoggin River.

Wiswall Dam Repair and Fish Ladder | Durham, NH

The Town of Durham engaged SA to perform Dam Engineering for evaluation and design of repairs and improvements to this 22-foot high, 380-foot long, significant hazard, concrete gravity and embankment Dam providing water supply and recreation to the Town of Durham and the University of New Hampshire. The Dam was originally constructed in 1911.

Hill Bridge Restoration, Phillips Exeter Academy | Exeter, NH

SA performed structural condition assessment, geotechnical investigation, bridge load rating, and design of repairs for the 100-year old concrete bridge spanning about 100 ft. over the Exeter River at Phillips Exeter Academy.

Livingston Street Reconstruction with Tire Shreds | Tewksbury, MA

The Town of Tewksbury, Massachusetts has reconstructed an 800-foot-length of Livingston Street using about 200,000 shredded scrap tires as lightweight fill - the first application of its kind in Massachusetts, and one of a handful of similar projects nationally.

MVRTA Parking Garage | Haverhill, MA

SA performed geotechnical investigation, evaluation and design, monitored vibrations during construction, and observed driven H-pile installation for 7-story parking garage in urban environment with close proximity to existing multi-story structures.

Geofoam Load-Balanced Embankment | Seekonk, MA

SA performed geotechnical investigation, evaluation and design and observed construction, for a load-balanced geofoam embankment to support smart tool, pipeline inspection gauge launching and receiving structures, constructed over peat with a high groundwater table.

Water Treatment Plant, Lagoons, Pipelines and Storage Tanks | Franklin, NH

SA evaluated geotechnical conditions at a new water treatment facility downstream of Franklin Falls Dam, along with a pipeline crossing the Pemigewasset River, lagoons, and new water storage tanks.