Deer Creek Reservoir

A large crane on a floating barge is positioned on a river surrounded by hills under a partly cloudy sky.

Scope: Oversight of construction quality management for installation of a new water intake Installation of a soil nail wall Writing quality control management plan and a commissioning plan Design for a mechanically stabilized earth (MSE) wall Design for interior shoring of a concrete utility tunnel  

John Coffee Bridge Study

A long bridge with concrete supports across a wide body of water, with distant hills visible under a clear blue sky.

Owner: National Park Service   Scope of work: Concrete core sampling consisting of the extraction of a minimum of one core sample from the lower portion of each pier in the channel, below the waterline (36 piers anticipated to be in the water) Concrete core testing consisting of strength tests and concrete quality tests Engineering […]

MBTA Systemwide Bridge Inspection & Load Rating

A maroon and grey passenger train crosses the wooden trestle Chelsea Mill Creek bridge over water, with two workers standing near the tracks.

Collins continues to provide above and underwater bridge inspection and load rating services on MBTA’s Systemwide bridges to evaluate their condition and determine their live load carrying capacity. This important work supports MBTA to ensure the continued safe operation of their rail and transit network. All work has been completed in accordance with applicable MBTA, […]

MBTA Earth Retaining Structure Inspections

Two workers in reflective vests and helmets stand beside wet train tracks under an overpass, inspecting the concrete retaining wall.

One of the first state agencies in New England to initiate an earth retaining structure (ERS) program, the MBTA chose Collins to jumpstart this endeavor with compiling a systemwide ERS inventory. The scope of services involved developing program guidance, creating an inventory item list and data collection spreadsheet, and providing all associated project management, planning, […]