2004 Hylebos Water Way Project
American Construction Company (ACC) performed upgrades to a site development project for the Hylebos Waterfront Property, LLC in Tacoma, Washington. This project involved multiple aspects of the company to include our marine construction and dredging divisions. ACC constructed a 350' long open cell sheet pile (35' to 50' long each) bulkhead with fender piling which had specifications of: 18" - 24" diameter, 0.375" - 0.500" wall thickness, and 60' - 61.5' in length. The bulkhead was constructed quickly under EPA authority and oversight in order to prevent landslides into the Hylebos Waterway. As a result, ACC placed protective rip rap rocks to stabilize the bank.
Additionally, ACC drove sixteen steel mooring piles and installed a 730 foot long by 10 foot wide float over depths of -10 feet MLLW and deeper. To maintain access, ACC installed grated-aluminum gangways for pedestrian traffic.
ACC dredged 59,856 cubic yards of contaminated material and placed it in Slip 1 of the Port of Tacoma. Since the material that was being dredged was contaminated, ACC took extra care to ensure no material was released back into the water column.