I-93 FAST 14 PROJECT

Between June and August, 2011, the I93 Rapid Bridge Replacement Project—better known as Fast 14 -- replaced fourteen Medford bridges in just ten weekends. The 60-year-old bridges had deteriorated badly, but a traditional replacement project would have taken four years and caused ongoing traffic congestion. MassDOT completed the work quickly, safely, and economically with an inventive new project design. Instead of working in the roadway, the Fast 14 team built new bridge sections off site. Each weekend, the team closed one bridge, removed old structures, lifted the new sections into place by crane, and connected them with a rapid-drying cement. By Monday, the new bridge was ready for the morning commute.

Credits

Owner: 
Massachusetts DOT

Contractor:
JF WHITE

Fabricator:
JERSEY PRECAST, NJ

Hayyan Design's Scope:
Stress Analysis for lifting during fabrication and transport, Displacement checks and crack prevention from casting to Installation of all pre-cast units used for the project.