PROJECT OVERVIEW
Phoenix Project #2303
One of the oldest operating swing bridges in the state of Massachusetts was in need of some upgrades. The utility bridge that was supplying the bridge with its main power was in poor condition, and a majority of its timber framing had deteriorated over time. To ensure that the bridge was able to remain functional for many years to come, an economical solution using helical piles was developed and implemented. The piles materials would need to be galvanized to help fight the harsh condition of the surrounding salt water.
There were plenty of logistical challenges for this project, including difficult access, weather, and schedule constraints. Most notably, all helical pile installations needed to be performed from a spudded barge, influenced by an 8’ tide. All of the issues were overcome with detailed planning and numerous meetings with the project team prior to mobilization.
Overall, Phoenix installed a total of 10 helical piles to a design depth of 50 feet. Half of the piles were installed at a 1:4 batter through templates provided off the barge deck. Phoenix was able to complete its work on time, despite battling through several days of severe winter weather.
