Long-term traffic impacts on SR 99: Lane closures as soon as March 7, for approx. 12 weeks

Alaskan Way Viaduct Replacement Program, WSDOT

Beginning as soon as March 7, crews building the future north portal of the SR 99 tunnel will close a single lane in both directions of SR 99/Aurora Avenue North between Valley Street and the Aurora Bridge. Two lanes will be open in each direction while crews install foundations for four large sign structures in the median and curb areas.

WSDOT understands that these closures will be inconvenient for those who use SR 99 on a regular basis. As such, this work is being completed in winter and early spring to take advantage of typically lower traffic volumes and to avoid conflicts with the recent football season and upcoming major summer events.

Closure details and schedule

Work is planned in two phases. View a map of the work locations.  

  • Phase 1 (approximately 8 weeks): one lane closed in both directions for median work
    • One lane in the northbound and southbound directions will be closed around-the-clock while crews install four sign foundations in the median
  • Phase 2 (approximately 4 weeks): one lane closed in southbound direction for curb work
    • One southbound lane will be closed around-the-clock while crews install two sign foundations in the southbound curb area

Construction schedules are inherently unpredictable due to weather and other factors. Durations shown for each phase are approximate and may change. We will keep the public informed as we prepare for Phase 2 work.

Bus rider information

Because northbound and southbound buses will travel – and stop – in the outside lanes with other vehicle traffic, trips may take longer than normal. During both phases the southbound bus-only lane restriction will be lifted.

Nighttime and weekend work

In an effort to balance the needs of drivers and residents, some work will occur during nighttime and weekend hours. An additional lane may close at night and during some weekend days. Some of the work is unavoidably noisy and may be disruptive. Residents with concerns related to nighttime noise may call 206-305-6967.

­Driver tips

The long-term lane closures are expected to cause additional backups on SR 99 for vehicles and buses, particularly during peak commute times. WSDOT is encouraging drivers and bus riders to:

Questions?

Contact us at viaduct@wsdot.wa.gov or 1-888-AWV-LINE (298-5463) or visit us at www.AlaskanWayViaduct.org.

As soon as March 7, crews building the future north portal of the SR 99 tunnel will close a single lane in both directions of SR 99/Aurora Avenue North between Valley Street and the Aurora Bridge. Two lanes will be open in each direction while crews install foundations for four large sign structures in the median and curb areas.

WSDOT understands that these closures will be inconvenient for those who use SR 99 on a regular basis. As such, this work is being completed in winter and early spring to take advantage of typically lower traffic volumes and to avoid conflicts with the recent football season and upcoming major summer events.

Closure details and schedule

Work is planned in two phases. View a map of the work locations.  

  • Phase 1 (approximately 8 weeks): one lane closed in both directions for median work
    • One lane in the northbound and southbound directions will be closed around-the-clock while crews install four sign foundations in the median
  • Phase 2 (approximately 4 weeks): one lane closed in southbound direction for curb work
    • One southbound lane will be closed around-the-clock while crews install two sign foundations in the southbound curb area

Construction schedules are inherently unpredictable due to weather and other factors. Durations shown for each phase are approximate and may change. We will keep the public informed as we prepare for Phase 2 work.

Bus rider information

Because northbound and southbound buses will travel – and stop – in the outside lanes with other vehicle traffic, trips may take longer than normal. During both phases the southbound bus-only lane restriction will be lifted.

Nighttime and weekend work

In an effort to balance the needs of drivers and residents, some work will occur during nighttime and weekend hours. An additional lane may close at night and during some weekend days. Some of the work is unavoidably noisy and may be disruptive. Residents with concerns related to nighttime noise may call 206-305-6967.

­Driver tips

The long-term lane closures are expected to cause additional backups on SR 99 for vehicles and buses, particularly during peak commute times. WSDOT is encouraging drivers and bus riders to:

Questions?

Contact us at viaduct@wsdot.wa.gov or 1-888-AWV-LINE (298-5463) or visit us at www.AlaskanWayViaduct.org.