SR 520 Construction Corner The go-to source for information on SR 520 construction and closures. Want to know about current or upcoming SR 520 construction closures and activities? You’ve come to the right place. Use the interactive map below to find detailed information on construction activities and closures as it is available. Visit the WSDOT travel map for travel conditions across the region. Closures Delmar Drive East between 11th Avenue East and Interlaken Boulevard closed nightly June 15-18 Eastbound SR 520 off-ramp to Montlake Blvd. closed overnight June 22 Long-term closures Boyer Ave. E. between E. Roanoke St. and Everett Ave. E. reduced to a single lane daily Feb. 18 – June 12 Activities Vibratory casing installation in Portage Bay schedule: Week of June 8-14 Note: This tool is presented for planning purposes only. Construction work is dependent on weather and other factors. Activities are subject to change.
