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Longest closure of SR 99 in four years set for late August; Construction and utility work require four day closure

information from WSDOT

In late August, crews building the future north portal of the SR 99 tunnel will close SR 99/Aurora Avenue North near South Lake Union for four days. During this closure, crews will demolish and replace the section of SR 99 that crosses above Broad Street.

To minimize the need for additional closures, separate crews will complete the following work elsewhere along the SR 99 corridor during this time:
· Utility work at Harrison Street
· Concrete panel replacement in SODO
· Expansion joint repairs on the Alaskan Way Viaduct near the Seneca Street off-ramp
· Ivy removal from the viaduct

Closure information

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