Storrow Drive Connector Bridge

Construction of a new Storrow Drive/Leverette Connector Bridge, connecting Boston’s Storrow Drive with Interstate-93. Part of the Central Artery project, this bridge is one of the largest single-cell trapezoidal steel box girder bridges in North America.

Client:   MassDOT
Designer:  HNTB Corporation
Size:  830 FT

Project Features

  • Three‐span bridge structure with a main span of 830‐feet.
  • 76‐foot wide roadway carrying four lanes of traffic.
  • Dredging and cofferdams installed for pier foundations.
  • Four concrete pilings measuring 8‐feet in diameter drilled 100‐feet down into soil and bedrock.
  • Steel outer casing added to drilled shafts at the south end where liquefiable soil conditions were found.
  • The entire 830-foot long steel box girder was fabricated in Florida, disassembled into sections and shipped to Boston via ocean-going barge.
  • Barges maneuvered through the Charles River Dam locks with just inches of clearance.
  • Hydraulic jacking system used to lift the three center sections, 295 feet weighing 650 tons.
  • Splicing of the girders involved installing several thousand bolts.
  • Superstructure required 1,860 tons of structural steel.
  • Bridge opened to traffic eight days ahead of schedule.
  • Awards: National Steel Bridge Alliance Award – Medium Long Span Category 2001

Tags: , , , , ,