Route 73 Rochester Bridges 15 & 16

Town of Rochester, VT

When officials at the Vermont Department of Transportation decided to replace two bridges on State Route 73 due to their deteriorated shape, they wanted the work done as quickly as possible. The construction team used Accelerated Bridge Construction methods and precast concrete beams to not only meet the deadlines but maximize the incentive bonus for finishing early.

The two bridges, both single-span, 20-foot-wide structures, were deemed functionally obsolete due to their deterioration and small width. Bridge 15, which crosses Brandon Brook, was constructed in 1929 in an historic district and was considered historic, but Tropical Storm Irene caused heavy bank erosion in 2011. Bridge 16, which crosses Corporation Brook, was constructed in 1929 of cast-in-place concrete T-beams.

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Projects details

  • PrecasterJ.P. Carrara & Sons, Inc., Middlebury, VT

  • Owner/DesignerVermont Department of Transportation (VTrans), Montpelier, VT.

  • EngineerVTrans/VHB

  • ContractorW.M. Schultz Construction, Inc., Ballston Spa, NY

Key Project Attributes

  • Seven NEXT 28D beams w-CW (4 for Bridge 15: 74’3” long and 12’2” wide and 3 for Bridge 16: 72’1” long and 11’3” wide).

  • 13 approach slabs (7 for Bridge 15 and 6 for Bridge 16).

  • Eight precast concrete wingwalls (four apiece).

  • Four precast concrete abutments (two apiece).