Monday, November 20, 2017


  


Scope of Work
Cianbro constructed new additions to the existing bascule span piers and erected two, 195 ft, 6 inch lift span towers and a 188 ft x 32 ft lift span over the Thames River.

Project Details
  • Installed 4,760 ft of sheet pile coffer dams
  • Installed 8 – 36 inch diameter end bearing pipe pile augured to rock 180 ft below sea level
  • Placed 77.5 tons of reinforcing steel in the pier extensions
  • Placed 2,382 cy of concrete in the pier extensions
  • Erected two, 980 ton, 195 ft, 6 inch lift span towers
  • Erected a 188 ft x 32 ft, 1,400 ton lift span
  • Constructed 1,250 tons of counterweight steel and concrete for the lift span
  • Fabricated and installed 166 tons of platforms and ladders
  • Installed two, 75 hp electric motors to drive the mechanical lift span
  • Installed four, 16 ft diameter sheaves 
  • Installed four, 7 ft, 6 inch diameter operating drums
  

Project Awards

Awarded the ABC/CT Excellence in Construction Best in Show

Unique Challenge



Cianbro erected a 1,250 ton lift span on a 100 ft x 140 ft assembly barge. During a 96 hour track outage in the spring of 2008, the existing bascule span was removed from the bridge and the new lift span was floated in and installed.

Project Information

Owner:
Amtrak®

Construction Manager:
The Washington Group, Inc.

Type of Project:
Transportation 

Construction Schedule:
Completed September 2008

Location:
New London, CT
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