Hydro demolition bridge project in Florida
Midwest Mobile Waterjet recently completed a hydro demolition bridge project near Port St Lucie Florida. The general contractor, Lead Engineering, was looking for a solution to speed up the process of removing the bridge decks from several bridges on Interstate 95. The original process included manual chipping on top of each bridge girder then cut the deck rebar away from the girder steel reinforcing without damaging it. This proved to be a labor intensive and difficult process.
Lead Engineering project managers contacted MMW to find a better solution. MMW was able to utilize robotic hydro demolition to remove a specific depth of concrete (8.5”) and expose the deck rebar directly above each girder. A minimum of deck concrete (1 inch or less) was intentionally left in place above the girders to be removed by lightweight chipping tools. After the deck was free from the girders they were removed in large sections using a crane. The process proved to be significantly faster than the original manual method and Lead Engineering was able to finish the bridge work ahead of schedule.