Next week, sheet pile installation will continue along the waterfront. Sheet piles are thin, interlocking steel sheets that act like a retaining wall and protect Elliott Bay from construction of the new wall. Sheet pile will be installed during daytime hours and noise and vibration may be noticeable.
Sheet pile installation continues on the central waterfront
What you can expect on the central waterfront next week:
- Work will occur seven days a week. Weekday work will occur both day and night, with the noisiest work stopping each day by 10 pm and resuming at 7 am. Weekend work is planned as sheet pile installation continues. Ongoing under pier work is dependent on the tides and work hours will vary.
- Continued mobilization of large equipment and materials in and out of the work zone.
- Utility work will occur at Madison Street next week. Traffic will be safely detoured around the work zone during this daytime activity.
- Generators supporting systems to control groundwater are operational and running 24 hours a day.
- Continued removal of rip rap (rocks located along the existing seawall) to install sheet pile.
- Sheet pile will be installed along the waterfront. This activity will start on the north side of Pier 57 and head south. A second team plans to start sheet pile installation on the south side of Pier 56, working south towards Madison Street. Noise and vibration may be noticeable during this activity. Work hours for sheet pile driving are daylight hours, seven days a week.
- Water treatment facility installation will continue during the day from Pike to Pine streets adjacent to and east of the surface parking lot in this block. This work is planned to be complete next week.
- Excavation and demolition of the old seawall is scheduled begin next week at Waterfront Park.
- Jet grout activities will continue near Waterfront Park. Jet grout is a process by which a concrete mixture is injected into the ground and mixed with existing soils to form a solid foundation. Jet grout prep work, including coring and pre-drilling, have started and will continue next week to prepare for the continued installation of jet grout columns.
Pedestrian and bicyclists
- The multi-use path along the west side of the Alaskan Way Viaduct is now open between Pike and University streets. The section between University and Madison streets is planned to open next week. Please follow the direction of flaggers and signage to safely access your destination.
- Trenching work will occur across Alaskan Way at Seneca Street next week. Once the multi-use path on the west side of the viaduct is open from University to Seneca streets, pedestrians and bicyclists will be detoured around the work zone.
- Trenching work will occur across Alaskan Way at Seneca Street next week. Local detours will be in place to maintain two-way traffic during this daytime activity.
- Utility work at Madison Street next week will have temporary impacts to the roadway under the viaduct. Please follow the direction of flaggers and signage.
What you can expect south of Colman Dock next week:
- Working hours are six days a week, both day and night, with the noisiest work stopping each day by 10 pm and resuming at 7 am.
- Ongoing activities to prepare for utility restoration and backfilling of the excavated area.
For questions about Seawall construction, send us an email at email@example.com or call our 24-hour hotline at 206.618.8584.