The Ames Street Bridge is a historical stone and concrete multi-arch structure that spans the Charles River in Dedham Massachusetts. Originally constructed in the mid 1800’s with several modifications in the early 1900’s the bridge was weight restricted and in dire need of rehabilitation when Mass Highway Department opened bids in December 2008. R. Zoppo Corp. was low bidder on the project and shortly thereafter set upon completing this complex project. The project requires extensive traffic management including the construction of a temporary pedestrian bridge in order to maintain two-way traffic throughout the life of the project. A major element of the work includes installation of the proprietary Cintec Bridge strengthening and monitoring system. Other critical components include installation of pipe piles and mini piles to support a new deck structure, substructure work including re-pointing stone masonry and installing new piers for superstructure support, and the maintenance and relocation of existing utilities. Working over the Charles River presents unique environmental and logistical challenges. To date, through thoughtful planning and skillful execution, R. Zoppo Corp. is able to meet these challenges and is on track to deliver this project a number of months ahead of schedule.