Link light rail train heading to the SODO station (image: Lizz Giordano)

A year ago, we reported on future ridership maps that showed a 2040 ST3 system with ridership concentrated in and near Seattle. We subsequently got a closer look at the station (and segment) level detail behind those maps.

The tables below are the high-end estimates for boardings 2040, organized by rail segment. These estimates are from September 2016, and may have been modestly refined since. In particular, I-405 BRT estimates are now higher than in 2016, as project improvements have greatly improved travel time. Variations in future growth vs current plans will surely raise or lower ridership in some places. On current trends, that means more ridership in Seattle and less in some suburban cities, but growth patterns may be different in 20 years.

The busiest stations? All are in downtown, and the two Westlake stations are first and fourth in the rankings, with 48,800 and 28,900 boardings respectively, along with thousands of transfers. International District, Capitol Hill, University Street and UW will all top 20,000 riders per weekday.