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Organization
Date
Parking Mitigation Stakeholders Meeting
Feb. 20, 2014
1
Tunneling Machine’s Main Bearing and Seal System
Main bearing Seal system
2
Seal system gaps on the SR 99 tunneling machine
Inner-seal gap Outer-seal gap
Outer-seal gap Inner-seal gap
3
South Portal Construction
Photo from Jan. 24, 2014. 4
North Portal Receiving Pit Construction
Photo from Jan. 9, 2014. 5
Photo from Jan. 30, 2014.
South Atlantic Street Overpass Opened Jan. 27
6
Work Begins to Build Road Connections in the North End
Work includes:
• Connecting the tunnel’s north
portal and Aurora Avenue North.
• Building SR 99 on- and off-
ramps.
• Extending Sixth Avenue North
between Harrison and Mercer
streets.
• Relocating utilities, adding
stormwater control and new
signage. Shaded area indicates project area.
7