Lane changes coming on Seventh Avenue North as work zone expands

Posted on May 8 2019 8:54 AM

Work is progressing on the three blocks of Seventh Avenue North in the South Lake Union neighborhood between Denny Way and Harrison Street. (This stretch of road used to be called Aurora Avenue North.) The North Surface Streets Project will turn what had been highway ramps and the sunken approach to the Battery Street Tunnel into a surface street with north/south bus lanes and signalized intersections at John and Thomas streets.

Map of Seventh Avenue North showing work areas

The project is phased to keep vehicles moving on Seventh Avenue North during construction. Next week the work zones will shift to accommodate new areas of construction. These lane configurations will be in place 24/7 for about four weeks. Here are the changes coming May 13 – 14:

  • Overnight closure: Northbound Seventh Avenue North fully closed, 9 p.m. Monday – 5 a.m. Tuesday, so crews can establish new work areas.
  • Lane Shift: Beginning Tuesday, the northbound lane of Seventh Avenue North between John and Harrison streets will be shifted onto new concrete. No turn movements will be affected.
  • Lane reduction: Beginning Tuesday, Seventh Avenue North will be reduced to one northbound lane north of Denny Way.
  • Borealis Avenue narrowed: Borealis Avenue will be tapered down to one lane to accommodate Battery Street Tunnel filling operations and to align traffic with the single lane of Seventh Avenue North that begins north of Denny. The taper will change sides of the street depending on what work activity is being performed. The bus stop will remain open.

Removing the left lane north of Denny Way will give crews space to dismantle and fill the Battery Street Tunnel’s portal and raise the trench to ground level. Shifting the travel lane at John Street will provide space to work on Seventh Avenue North’s future outside lane between John and Harrison streets. See the map at right (click for larger version).

Future work

Later this month, Denny Way will be reduced to one lane in each direction for overnight utility work beneath the street. Later this summer, the contractor will move into the next major phase of the North Surface Streets Project, when Seventh Avenue North's travel lanes in both directions will be shifted into the center of the road so crews can work on the outside lanes.

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