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Infrastructure

I-405, SR 9 closures start Aug. 28

πŸ”Š Listen Β· narrated by Aiden

Multiple highway closures begin this week across the Olympic Peninsula. Southbound I-405 will close from milepost 14.25 to 12.5 overnight from 10 p.m. Friday, Aug. 28, to 8 a.m. Saturday, Aug. 29. Northbound I-405 will also close in two sections from 11 p.m. Friday, Aug. 28, to 5 a.m. Monday, Aug. 31.

State Route 9 will be reduced to a single lane near Kalloch Road (MP 59) with alternating traffic through a bypass road until Sept. 14 for fish passage construction. Another SR 9 section near Mount Vernon Big Lake Road will alternate traffic daily from 10 a.m. to 4 p.m. through Sept. 3. State Route 547 will have flagger-controlled alternating traffic weekdays from Aug. 24 to Sept. 4 for utility work.

πŸ“„ Source: WSDOT β€” Highway Construction & Closures β€” https://wsdot.wa.gov/travel/road-construction
Source receipts11 of 17 claims supported Β· 65%

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  • ⚠
    Multiple highway closures begin this week across the Olympic PeninsulaNo usable supporting receipt β€” unverified.
  • βœ“
    Southbound I-405 will close from milepost 14.25 to 12.5 overnightβ€œ405: Up to four lanes of southbound I-405 from milepost 14.25 to milepost 12.5 will be closed overnight, 10 p.m. Friday, Aug. 28 – 8 a.m. Saturday, Aug. 29.”
  • βœ“
    The closure of Southbound I-405 will start at 10 p.m. Friday, Aug. 28β€œ405: Up to four lanes of southbound I-405 from milepost 14.25 to milepost 12.5 will be closed overnight, 10 p.m. Friday, Aug. 28 – 8 a.m. Saturday, Aug. 29.”
  • βœ“
    The closure of Southbound I-405 will end at 8 a.m. Saturday, Aug. 29β€œ405: Up to four lanes of southbound I-405 from milepost 14.25 to milepost 12.5 will be closed overnight, 10 p.m. Friday, Aug. 28 – 8 a.m. Saturday, Aug. 29.”
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    Northbound I-405 will also close in two sectionsNo usable supporting receipt β€” unverified.
  • βœ“
    The closure of Northbound I-405 will start at 11 p.m. Friday, Aug. 28β€œ405: Up to three lanes of northbound I-405 will close from the Northeast 85th Street on-ramp to Northeast 100th Street from 11 p.m. Friday Aug. 28 to 5 a.m. Monday, Aug. 31. A signed detour will be in place.”
  • βœ“
    The closure of Northbound I-405 will end at 5 a.m. Monday, Aug. 31β€œ405: All lanes of northbound I-405 will close from Northeast 70th Place to Northeast 85th Street from 11 p.m. Friday Aug. 28 to 5 a.m. Monday, Aug. 31. A signed detour will be in place. Effective: Aug 21, 2026, 12:00 AM Expected end: Aug 31, 2026, 5:00 AM”
  • βœ“
    State Route 9 will be reduced to a single lane near Kalloch Road (MP 59)β€œ009: SR 9 is reduced to a single lane near Kalloch Road (MP 59) with a signal alternating northbound and southbound traffic through a bypass road for 42 days, until Sept. 14 for fish passage construction.”
  • ⚠
    The reduction of State Route 9 will be through a bypass roadNo usable supporting receipt β€” unverified.
  • βœ“
    The reduction of State Route 9 will last until Sept. 14 for fish passage constructionβ€œ009: SR 9 is reduced to a single lane near Kalloch Road (MP 59) with a signal alternating northbound and southbound traffic through a bypass road for 42 days, until Sept. 14 for fish passage construction.”
  • ⚠
    Another SR 9 section near Mount Vernon Big Lake Road will alternate traffic dailyNo usable supporting receipt β€” unverified.
  • ⚠
    The alternation of traffic on another SR 9 section will be from 10 a.m. to 4 p.m.No usable supporting receipt β€” unverified.
  • βœ“
    The alternation of traffic on another SR 9 section will last through Sept. 3β€œ009: Northbound and southbound traffic will alternate from 10 a.m. to 4 p.m. daily Mondays through Thursday through Thursday, Sept. 3, just south of Mount Vernon Big Lake Road (milepost 49) for fish passage construction. Expect delays in the area.”
  • βœ“
    State Route 547 will have flagger-controlled alternating traffic weekdaysβ€œ547: Weekdays from 9 a.m. to 3 p.m. beginning Monday, Aug. 24 until noon Friday, Sept. 4, State Route 547 traffic will alternate with flaggers from State Route 542 (milepost 0) to Frost Road (milepost 6) will close for PSE utilities work.”
  • βœ“
    The flagger-controlled alternating traffic on State Route 547 will start on Aug. 24β€œ547: Weekdays from 9 a.m. to 3 p.m. beginning Monday, Aug. 24 until noon Friday, Sept. 4, State Route 547 traffic will alternate with flaggers from State Route 542 (milepost 0) to Frost Road (milepost 6) will close for PSE utilities work.”
  • ⚠
    The flagger-controlled alternating traffic on State Route 547 will end on Sept. 4No usable supporting receipt β€” unverified.
  • βœ“
    The flagger-controlled alternating traffic on State Route 547 is for utility workβ€œ547: Weekdays from 9 a.m. to 3 p.m. beginning Monday, Aug. 24 until noon Friday, Sept. 4, State Route 547 traffic will alternate with flaggers from State Route 542 (milepost 0) to Frost Road (milepost 6) will close for PSE utilities work.”

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