Hydro Demolition
A Process was needed to reduce the time need to rehabilitate a bridge deck for a project in Bertie County. The project would take 18 months using standard methods forcing traffic to be detoured for 50 miles during the rehabilitation of the structure. A project in Columbia, SC was using the Hydro-Demolition process for dual three lane structures on I-77. Each structure was approximately 5500 feet long. The Bertie County structure is approximately 1 mile long. Both structures in SC were completed and open to traffic in 25 days. The Bridge Maintenance Unit set up a pilot project using the Hydro-Demolition in Greene County. The Greene County project, using our standard method of deck rehabilitation would have taken 14 weeks. Using Hydro-Demolition, the project was complete and open to traffic within 2 weeks. Using this project on the Bertie County project will reduce the time from 18 months to 30 days.

Results
For the Greene County project time was reduced from 14 weeks to 2 weeks saving 85.7% of required time. In addition the project, using the new process, saved $230,205.42.