MEMO TO: Members of the City Council
FROM: Mayor Angela Birney
SUBJECT:
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Approval of a Full Roadway Closure on 40th Street for seventeen (17) calendar days for Construction of the SR 520 Trail Grade Separation Project at NE 40th Street
I. RECOMMENDED ACTION
recommendation
Approve a full street closure on 40th Street generally between the 15200 Block and the westbound SR520 on/off ramps for seventeen (17) calendar days for the construction of the 520 Trail Grade Separation at 40th Street project.
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II. DEPARTMENT CONTACTS
Carol Helland, Interim Director, Planning & Community Development 425-556-2107
Donald Cairns, P.E., Manager 425-556-2834
Peter Dane, Senior Planner 435-556-2816
David Juarez, Director of Public Works 425-556-2733
Paul Cho, City Traffic Engineer 425-556-2751
Bassam Al-Ali , Senior Project Manager 425-556-2743
III. DESCRIPTION/BACKGROUND
40th Street Full Closure
A full-street closure requires approval by the City Council in accordance with RMC 10.24.047. Construction of the tunnel structure for the 40th Street Trail Grade Separation project requires a 17 calendar days full closure of 40th Street. This closure is currently scheduled for August 7th through August 24th. The closure would be located on 40th Street at the west side of the intersection of the westbound 520 on-/off-ramps. The 520 interchange at 40th Street would continue to function, with access to both eastbound and westbound 520, but drivers would only be able to access the interchange from the east via 156th Avenue. A street closure diagram is available in Attachment B.
Keeping the interchange in operation and providing access from the east helps serve the most significant vehicle volumes at the interchange. Daily traffic volumes on 40th Street immediately east of the eastbound 520 on-/off-ramp are approximately 27,000 per day while volumes immediately west of the westbound 520 on-/off-ramp are approximately 18,000 per day....
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