Project area updates

Click here to subscribe to Area 1 text and email notifications.

Area 1. past updates

• Preparation activities for final repaving on residential streets will begin as early as August 28, August, 2023
• Utility work and preparation for paving beginning as early as August 14, August, 2023
• Expect construction activities near North Mercer Pump Station for the next month, June 2023
• Work on temporary pump station continues; Temporary generator running the week of June 12, June 2023
• Update: 24-hour closure at 78th Ave SE and SE 24th St intersection extended, March 2023
• Pipe installation progresses to SE 24th St as early as March 1, February 2023
• Construction continues on temporary pump station, January 2023
• November 29 Neighborhood Meeting Canceled, November 29, 2022
• Please join us on Tuesday, November 29, for a neighborhood meeting about the North Mercer Pump Station. November 22, 2022
• Temporary pump station construction begins; Pipe installation on SE 22nd St continues, October 2022
• Saturday work will ramp up across the project corridor, September 2022
• Pipe installation on SE 22nd St is underway, September 2022
• Upcoming construction activities at the North Mercer Pump Station, August 17, 2022
• Sewer line construction beginning as early as July 14. Expect increased noise, vibrations, and some driveway access interruptions on SE 22nd St, 78th Ave SE, and SE 24th. July 8, 2022
• Construction staging to begin at the North Mercer Pump Station starting next week, June 24, 2022
• Schedule Update: Tree removal in Mercer Island begins soon, June 14, 2022
• Schedule Update: Tree removal near North Mercer Pump Station starting in June, May 18, 2022
• Surveying continues/utility locates beginning in May, May 4, 2022
• North Mercer Pump Station pre-construction StoryMap - What you need to know as construction gets started, April 19, 2022
  
  

Click here to subscribe to Area 2 text and email notifications.

Area 2. past updates

• North Mercer Way closed between 81st Avenue Southeast and Southeast 26th Street as early as September 25*, September 2023
• Preparation activities for final repaving on residential streets will begin as early as August 28, August, 2023
• North Mercer Way closed between 81st Avenue Southeast and Southeast 26th Street as early as August 21, August, 2023
• Utility work and preparation for paving beginning as early as August 14, August, 2023
• Grinding and permanent paving on 81st Avenue Southeast and North Mercer Way starting June 27, June 2023
• UPDATE: Changes to traffic control and planned detours for the North Mercer Way closure, June 2023
• Pipe installation on North Mercer Way moves toward Island Crest Way, June 2023
• Pipe installation on North Mercer Way continues; 81st Avenue Southeast at North Mercer Way will partially reopen as soon as June 7, June 5, 2023
• Construction on North Mercer Way starting May 15th; Expect closures and detours throughout this work, May 2023
• UPDATE: Construction on North Mercer Way starting as early as May 8th, April 2023
• Construction on North Mercer Way starting as early as May 1; Expect closures and detours throughout this work, April 2023
• UPDATE: 81st Avenue Southeast fully closed starting April 10th for pipe installation, April 2023
• Update: 24-hour closure at 78th Ave SE and SE 24th St intersection extended, March 2023
• Update: 78th Ave and SE 24th intersection closed 24-hours a day for pipe installation, March 2023
• Pipe installation progresses to SE 24th St as early as March 1, February 2023
• Repair completed for residential gas line on 78th Ave SE, December 28, 2022
• November 29 Neighborhood Meeting Canceled, November 29, 2022
• Pipe installation progresses to 78th Avenue Southeast, November 2022
• Temporary pump station construction begins; Pipe installation on SE 22nd St continues, October 2022
• Saturday work will ramp up across the project corridor, September 2022
• Pipe installation on SE 22nd St is underway, September 2022
• Sewer line construction beginning as early as July 14. Expect increased noise, vibrations, and some driveway access interruptions on SE 22nd St, 78th Ave SE, and SE 24th. July 8, 2022
• Surveying continues/utility locates beginning in May, May 4, 2022
• North Central Residential Streets pre-construction StoryMap - What you need to know as construction gets started, April 19, 2022

Click here to subscribe to Area 3 text and email notifications.

Area 3. past updates

• Construction equipment and material storage coming to South Parking Lot in Luther Burbank Park, September 2023
• Grinding and permanent paving on 81st Avenue Southeast and North Mercer Way starting June 27, June 2023
• UPDATE: Changes to traffic control and planned detours for the North Mercer Way closure, June 2023
• Pipe installation on North Mercer Way moves toward Island Crest Way, June 2023
• Pipe installation on North Mercer Way continues; 81st Avenue Southeast at North Mercer Way will partially reopen as soon as June 7, June 5, 2023
• UPDATE: Construction on North Mercer Way starting as early as May 8th, April 2023
• Construction on North Mercer Way starting as early as May 1; Expect closures and detours throughout this work, April 2023
• UPDATE: 81st Avenue Southeast fully closed starting April 10th for pipe installation, April 2023
• Temporary lane closure along North Mercer Way near Fortuna Drive as early as March 13, March 1, 2023
• Surveying continues/utility locates beginning in May, May 4, 2022
• North Mercer Way pre-construction StoryMap - What you need to know as construction gets started, April 19, 2022

Click here to subscribe to Area 4 text and email notifications.

Area 4. past updates

• Updated Pedestrian Detour Map available, September 2023
• I-90 Trail closing between 84th Avenue Southeast and Shorewood Drive as early as Aug 14, August 11, 2023
• Tree removal beginning along North Mercer Way and I-90 trail, August 8, 2023
• I-90 trail closed between Southeast 26th Street and Shorewood Drive as early as July 10*, July 7, 2023
• Temporary lane closure along North Mercer Way near Fortuna Drive as early as March 13, March 1, 2023
• Landscape restoration begins on the I-90 Trail, February 17, 2023
• Landscape restoration begins, October 14, 2022
• Saturday work will ramp up across the project corridor, September 2022
• Schedule Update: Tree removal in Mercer Island begins soon, June 14, 2022
• Construction work on the I-90 trail will begin as early as June 8, June 2, 2022
• Surveying continues/utility locates beginning in May, May 4, 2022
• I-90 Trail pre-construction StoryMap - What you need to know as construction gets started, April 19, 2022

Click here to subscribe to Area 5 text and email notifications.

Area 5. past updates

• SCHEDULE UPDATE: Paving now planned for October 5 and 6, October 2023
• Join us this Thursday, September 28 at 4:30 pm to learn about paving activities on 90th Place Southeast, September 2023
• Paving beginning on 90th Place Southeast, September 2023
• Crews begin installing pipe on Shorewood Drive as early as May 19, May 2023
• Pipe installation on 90th Place Southeast to be completed as early as mid-June, April 2023
• Upcoming water service interruptions on 90th PL SE, February 17, 2023
• Schedule update and work on 90th PL SE, October 28, 2022
• Saturday work will ramp up across the project corridor, September 2022
• Water and sewer line relocation starting on September 13, September 9, 2022
• Expect construction crews and activity starting on 90th Place Southeast as early as July 18, July 14, 2022
• Surveying continues/utility locates beginning in May, May 4, 2022
• 90th Place Southeast pre-construction StoryMap - What you need to know as construction gets started, April 19, 2022

Click here to subscribe to Area 6 text and email notifications.

Area 6. past updates

• Phase 4 detour and trenchless pipe installation coming to Southeast 35th Place as early as April 1
• Overnight equipment offloading at East Mercer Way onramp to I-90 Westbound, March 12th
• Join us for a neighborhood conversation on Thursday, March 14 at 4 p.m.
• Shoreline restoration begins near the Mercer Island Boat Launch, March 5, 2024
• Crews will be offloading equipment at the East Mercer Way onramp to I-90 Westbound on March 5, February 2024
• Pipe installation and structural upgrades coming to 97th Avenue Southeast and Lift Station 11 at Fruitland Landing, February 2024
• Frontage Road and Mercer Island Boat Launch closed for up to three Fridays and Saturdays as early as February 9, February 2024
• Trenchless pipe installation off 97th Avenue Southeast starts as early as February 12, February 2024
• Southeast 35th Street Neighborhood Conversation Event Summary, December 7, 2023
• Pipe installation on Southeast 35th Place mid-December, December 2023
• I-90 trail closing between North Mercer Way and Southeast 35th Place as early as October 23, October 2023
• Tree removal and pipe installation in Northeast Mercer Island to begin as early as October 23, October 2023
• Underwater pipe installation moves toward Mercer Island in October, September 2023
• Underwater pipe installation continues in Lake Washington’s East Channel, August 2023
• Work in Lake Washington’s East Channel will last through early 2024, June 2023
• Utility location around Enatai Beach Park as early as June 5, June 8, 2023
• Construction work on the I-90 trail will begin as early as June 8, June 2, 2023
• Weekend overflow parking for the Mercer Island Boat Launch at City Hall, May 26, 2023
• Work begins at North Mercer Way and Southeast 35th Street as early as May 31, May 25, 2023
• Preparation activities beginning at the Mercer Island Boat Launch, May 11, 2023
• Work begins at North Mercer Way and SE 35th St as early as April 10, March 24, 2023
• Construction on Southeast 35th Place begins November 28th, November 22, 2022
• Please join us on Monday, November 7, for a neighborhood walk on SE 35th Place, October 31, 2022
• Upcoming construction activities: King County to begin in-water work in Lake Washington’s East Channel, October 7, 2022
• Construction equipment and material storage coming to South Parking Lot in Luther Burbank Park, September 22, 2022
• Schedule Update: I-90 trail work begins today with closures starting as early as June 17, June 9, 2022
• Construction work on the I-90 trail will begin as early as June 8, June 2, 2022
• Surveying continues/utility locates beginning in May, May 4, 2022
• Construction equipment and activity coming to Mercer Island Boat Launch, April 22, 2022
• Northeast Mercer Island pre-construction StoryMap - What you need to know as construction gets started, April 19, 2022
• Construction equipment and activity coming to empty lot near E Mercer Way and Frontage Rd, April 13, 2022

Click here to subscribe to Area 7 text and email notifications.

Area 7. past updates

• Nighttime work in the East Channel begins as early as November 14, November 2023
• Underwater pipe installation moves toward Mercer Island in October, September 2023
• Construction in the public areas at Enatai Beach Park as early as September 11, September 2023
• Work in the East Channel beginning at 6 a.m. starting Aug. 8, August 7, 2023
• Underwater pipe installation continues in Lake Washington’s East Channel, August 2023
• Work in Lake Washington’s East Channel will last through early 2024, June 2023
• Updated Bike Detour Map available, February 2023
• Enatai Siphon pipe installation is complete! December 19, 2022
• Nightwork for the Enatai Siphon pipe installation begins December 16 at Enatai Beach Park, December 15, 2022
• Enatai siphon pipe installation planned to begin as early as December 15th. This will require work around the clock. December 2, 2022
• Extended work hours in Bellevue in preparation for Enatai siphon pipe installation. December 2022
• Upcoming construction activities: King County to begin in-water work in Lake Washington’s East Channel, October 7, 2022
• Crews continue to prepare for Horizontal Directional Drilling (HDD) at Enatai Beach Park and Sweyolocken Pump Station, September 12, 2022
• Saturday work will ramp up across the project corridor, September 2022
• Construction equipment and activity coming to Enatai Beach Park as early as July 1, June 17, 2022
• Construction equipment and activity coming to the Sweyolocken Boat Launch in June, May 18, 2022
• Surveying continues/utility locates beginning in May, May 4, 2022
• Enatai Beach Park pre-construction StoryMap - What you need to know as construction gets started, April 19, 2022

Click here to subscribe to Area 8 text and email notifications.

Area 8. past updates

• Enatai Siphon pipe installation is complete! December 19, 2023
• Updated Bike Detour Map available, February 2023
• Enatai siphon pipe installation planned to begin as early as December 15th. This will require work around the clock. December 2, 2022
• Extended work hours in Bellevue in preparation for Enatai siphon pipe installation. December 2022
• Construction on Southeast 35th Place begins November 28th, November 22, 2022
• Construction on Southeast 35th Place beginning next week, October 28, 2022
• Crews continue to prepare for Horizontal Directional Drilling (HDD) at Enatai Beach Park and Sweyolocken Pump Station, September 12, 2022
• Saturday work will ramp up across the project corridor, September 2022
• Construction update: Expect intermittent loud noises and/or vibrations. Hammering to begin near Sweyolocken Boat launch. August 18, 2022
• Mercer Slough Bike Trail will be closed while crews work at Sweyolocken Boat Launch, June 10, 2022
• Construction equipment and activity coming to the Sweyolocken Boat Launch in June, May 18, 2022
• Surveying continues/utility locates beginning in May, May 4, 2022
• Mercer Slough pre-construction StoryMap - What you need to know as construction gets started, April 19, 2022