Weekend night closure of northbound Interstate 5 lanes

Publish Date

Starting Saturday, March 14, a portion of the northbound Interstate 5 general purpose lanes will be closed while Sound Transit's contractor delivers the traction power substation (TPSS) to Northgate Station. TPSS units provide electricity to the overhead wires which power light rail vehicles. To safely complete this work, a portion of the northbound Interstate 5 lanes will be closed overnight as crews stage a crane on I-5 to lift the TPSS into place at the elevated station.


Weekend closure of northbound Interstate 5 lanes for traction power substation (TPSS) delivery at Northgate Station.


Saturday, March 14 - Sunday, March 15, 10 p.m. – 5:30 a.m. this is night-time work only.


Northbound Interstate 5 general purpose lanes closed from the Banner Way Northeast on ramp to just after the off ramp to 1st Avenue Northeast. The three right general purpose lanes northbound will be closed from 10 p.m. – 5:30 a.m. (see map). One northbound lane will remain open to traffic during this time.


  • Banner Way Northeast to northbound Interstate 5 on ramp will be closed. Drivers must proceed east to 5th Avenue Northeast, then north to Northeast Northgate Way for Interstate 5 north.
  • A crane will be used to lift the TPSS unit at the station.
  • A Temporary Noise Variance has been issued by the City of Seattle for this work for 9 p.m. to 7 a.m.
  • Northgate Mall and Northgate Transit Center will be accessible using the detour route from 5th Avenue Northeast.
Map showing weekend night closures of northbound Interstate 5 lanes.