Updates

Introducing: the rock saw

In the coming weeks, the Seawall Project will be using a piece of equipment, called a rock saw, to cut through the existing seawall. This four-foot saw blade will aid removal of portions of the existing seawall concrete face panels to access the soil beneath so it can be stabilized with jet grout. It takes a large piece of equipment to complete this work and the Seawall Project construction team will ensure it is done in a safe and secure manner. This excavation at Waterfront Park will continue next week in preparation for sheet pile installation.

Over the next week, landside sheet pile installation will continue at the work zone south of Colman Dock. Once completed, the equipment used for the sheet pile installation will be transported to the work zone at Waterfront Park. This work is tentatively planned to start late next week. Increased noise and vibration are to be expected.

For more information about this work, please send us an email at seawall@waterfrontseattle.org or contact the project hotline at 206.618.8584.

 


Here’s a snapshot of construction activities occurring over the next week:

  • Landside sheet pile installation continues at the work zone south of Colman Dock next week. Continued noise and vibration are to be expected. Once complete, this work will move north to the work zone near Waterfront Park, anticipated to start later next week.
  • Excavation at Waterfront Park will continue next week in preparation for landside sheet pile installation.
  • Shoring wall installation starting at the work zone south of Colman Dock next week. This activity supports the surrounding soil during excavation.
  • Mobilization of jet grout equipment at the work zone south of Colman Dock. A jet grout test section is planned to begin late next week, once all the equipment is in place.
  • Puget Sound Energy (PSE) will continue to conduct field investigations on the east side of the Alaskan Way Viaduct between University and Madison streets. Work will include sawcutting and excavation to uncover PSE’s high pressure natural gas pipeline. This work is anticipated to last up to three weeks.
  • Seattle City Light will be conducting utility work at night beneath Pier 56 starting next week. This work is dictated by the tidal schedule and is subject to change. Once started, this work will take approximately one month to complete.
  • Sawcutting and access hatch installation at Pier 56 is planned to be complete on Friday, April 11.
  • Late next week, private utility companies will complete additional sawcutting activities on the western portion of the old Alaskan Way roadway at Pier 56 to relocate infrastructure. The sawcutting will occur over one morning, starting at 7 am. Once complete, crews will work over a couple of nights next week to complete the relocation work. During the day, steel plates will cover the excavated areas.
  • Installation of signage and pay stations at the parking spaces to the east of the viaduct at Madison Street. This work may take a few weeks to complete.
  • Occasional transport of equipment between Waterfront Park and Yesler Way.

What you can expect: 

  • Construction is scheduled to occur during the day and nighttime, Monday through Sunday, with the nosiest work stopping each day by 10 pm and resuming at 7 am.
  • Increased noise and vibration due to pile installation, sawcutting and jet grout equipment.
  • Intermittent pedestrian impacts on the east side of the Alaskan Way Viaduct between University and Madison streets to accommodate PSE’s investigative work and near Pier 56 to accommodate utility work.

For questions about Seawall construction, send us an email at seawall@waterfrontseattle.org or call our 24-hour hotline at 206.618.8584.