Getting ready for the 33 miles of Link extensions coming over the next few years involves a lot more than just construction on the projects themselves. It also means making sure that our existing operations are in top condition as we prepare to expand our transit system across the region.
As with any system that begins to age, the vehicles, tracks and facilities require maintenance so that our system can continue operating in a safe and reliable manner. This means that passengers will need to prepare for intermittent periods of less frequent service and replacement bus service when available.
Link light rail
Summer rail replacement
| Start date | End date | Stations affected | Impact | Alternate service |
| May 21 | July 31 | Systemwide | After 11 p.m. on some dates (May 21, May 28, June 4, June 11, June 25, July 9 and 10, July 16, July 23 and 24, and July 30 and 31), trains will arrive every 20 minutes until end of service. | View alternate service maps |
Columbia City tile repair
On Aug. 18, service will be disrupted on the 1 Line to repair tiles at Columbia City Station. During this disruption, trains will run every 10 minutes between Northgate and Stadium stations and every 20 minutes between Stadium and Angle Lake stations.
Southbound trains originating at Northgate will alternate between terminating at Stadium and continuing on to Angle Lake.
- Passengers traveling south of Stadium Station should read the head signs on the train before boarding to avoid having to transfer.
- Passengers on northbound trains will not need to transfer.
- The Angle Lake (southbound) platform for Columbia City will be closed. Trains going both directions will serve the Northgate (northbound) platform.
SeaTac/Airport platform tile replacement
From July 15 to Sept. 6, Sound Transit will replace platform edge tile at SeaTac/Airport Station.
Work will begin at 10 p.m. each weeknight and will stop before train service starts the following morning. During this time, southbound and northbound trains may arrive on the opposite platform. Passengers should pay attention to the destination of the train before boarding.
Sounder trains
There are no planned service disruptions for Sounder at this time.
ST Express buses
There are no planned service disruptions for ST Express buses at this time.