Trinity Avenue Pump Station, Grafton, MA

Tata & Howard is providing engineering services to the Grafton Water District for the Trinity Avenue Pump Station at the Trinity Avenue Wellfield. The project included permitting, design, and bidding of the pump station as well as providing assistance with permitting, design, and reporting to the Massachusetts Department of Environmental Protection (MassDEP) for the proposed Trinity Avenue Well site.  The property was owned by the Massachusetts Division of Fisheries and Wildlife (DFW).  The Grafton Water District swapped land with the DFW to obtain ownership and control of the Trinity Avenue site.  Test wells were installed and short term pump tests were completed on each of the wells.  Based on the results of the tests, it was recommended to install a three well configuration of 18 inch x 12 inch gravel packed wells resulting in approximately 800 gallons per minute (gpm).  The project included an evaluation of alternatives for the access road including installation of a bridge or an open bottomed culvert, and T&H assisted with the preparation of permanent easements for the installation of utilities and roadway to the well site. In addition, T&H prepared and submitted an NOI to the Grafton Conservation Commission. Design included double wythe block and interior concrete painted block with wood truss roof and asphaltic shingles; and security included chain link fence, gates, locks, intrusion alarms, and lighting. T&H also assisted with the coordination of the installation of three phase power to site. Chemical feed at the station includes KOH for pH adjustment and chlorine gas for disinfection. Standby power was included in an outdoor enclosure. The design also included a 24-inch transmission main for 4-log removal. Currently, T&H is providing construction administration and resident observation services.

 

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Historic Bridge Rehabilitation (circa 1865)

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Before rehabilitation
Before rehabilitation

CLIENT: Watertown, CT

PROJECT: Skilton Road Bridge Rehabilitation

THE CHALLENGE: Skilton Road Bridge was originally built in 1865 as a one lane, dry stone masonry arch bridge over the Skilton Gorge in Watertown, Connecticut. Rehabilitation in 1988 included strengthening of the stone masonry with reinforced concrete, and adding concrete guide rails to the bridge. On December 10, 1991, Skilton Road Bridge was added to the National List of Historic Places, and in 2013, the bridge was found to be structurally deficient.

After rehabilitation
After rehabilitation

THE SOLUTION: Tata & Howard’s design for the rehabilitation and repair of the bridge required careful consideration of the historical nature of the structure. The design was approved and construction took place in 2015. All structural deficiencies were addressed and the project included the following:

  • Removed existing guide rails
  • Installed prestressed concrete beams across the top of the existing bridge
  • Widened the bridge for two 9’ travel lanes and a sidewalk
  • Installed new aluminum bridge rails covered with wood
  • Repaired the stone masonry on the west abutment wall
  • Added new storm drainage
A ribbon cutting ceremony was held December 10, 2015
A ribbon cutting ceremony was held December 10, 2015

PROGRESS: Construction on the Skilton Road Bridge was completed in October of 2015, and a ribbon cutting ceremony was held on December 10, 2015. The bridge maintains its historic integrity.