South Lake Union Transit Stop to Expand in Unusual Fashion


When the South Lake Union streetcar’s station platforms were designed in the early 2000s, it was not imagined that streetcar stops along Westlake Avenue would also end up accommodating several other very frequent bus routes. But as demand for transit in South Lake Union grew, that’s exactly what happened. In 2016, the C Line was extended to run up Westlake on newly created transit-only lanes and the Route 40 was moved there as well.

Accomplishing this wasn’t just about moving the buses; the stations had to be enlarged so that a streetcar and a 60-foot articulated bus could stop at the same platform. But not every platform could be enlarged due to where it was located. The southbound streetcar stop at 9th Avenue and Westlake Avenue sits on a relatively short block sandwiched between Blanchard Street. So it remains about half of the size of the stop across the street, which was beefed up to accommodate more buses.

The current Seattle streetcar stop on Westlake on the south side of 9th Avenue will be expanded across 9th to provide more space. (Google Maps)
The current Seattle streetcar stop on Westlake on the south side of 9th Avenue will be expanded across 9th Avenue to provide more space. (Google Maps)

That means any time two transit vehicles arrive at the stop, the second in line has to wait for the first to clear the platform before it’s able to access it, adding dwell time and delaying the entire route.

Now the Seattle Department of Transportation (SDOT) is planning a fix to alleviate this bottleneck for the Seattle Streetcar, the Route 40, and the C Line. As part of its 2020 transit spot improvements, the department plans to extend the transit stop north, adding a loading platform on the opposite side of Westlake Avenue’s intersection with 9th Avenue. This will be the first time that a transit stop will exist on either side of an active intersection.

A design plan for the improved transit stop including raised crosswalk cross 9th Avenue. (City of Seattle)

9th Avenue is a one-way street in this area, with a direct connection between Denny Way and Westlake Avenue in front of the 2201 Westlake building. Many drivers use the short stub of a street to cut around the crowded Denny and Westlake intersection, despite the fact that the street functions almost entirely as a driveway for the office building. In order to better communicate to people driving through there that there is a extended transit stop, SDOT plans to add a raised crosswalk parallel to Westlake Avenue, connecting the two sections of the new transit stop.

An extended transit stop would bridge either sides of 9th Avenue with a raised crosswalk to communicate the space as for pedestrians. (Photo by the author)
An extended transit stop would bridge either sides of 9th Avenue with a raised crosswalk to communicate the space as for pedestrians. (Photo by the author)

Another option here would have been closing 9th Avenue to through car traffic entirely. Creating a 9th Avenue pedestrian corridor where traffic currently flies through was a missed opportunity when the 2201 Westlake building was constructed. Now, with buses unloading and loading all day on either side of 9th Avenue, opportunities for conflicts between drivers and people walking and rolling will increase.

A pedestrianized 9th Avenue would also be essential if Westlake Avenue was converted into a car-free corridor, an idea that is as unacknowledged by city leaders as it is appealing to urbanists. Former Mayor Mike McGinn has proposed the idea of removing Westlake from the city’s Car Master Plan as a way of making way for transit, walking, and biking. While we’re making spot improvements that have a huge impact on thousands of transit riders per day, as this streetcar stop expansion will, we should step back and look at the bigger picture. It’s the only way to keep the status quo from claiming another day.

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Ryan Packer lives in the Summit Slope neighborhood of Capitol Hill and has been writing for the blog since 2015. They report on multimodal transportation issues, #VisionZero, preservation, and local politics. They believe in using Seattle's history to help attain the vibrant, diverse city that we all wish to inhabit. In December 2020, Ryan started a three-month stint as editor of Seattle Bike Blog.

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Derek C

What is the best way as a private citizen to engage the city about pedestrianizing these corridors?


Is there a way to comment on these plans or suggest other spot improvements?

I ride the bus through here almost every day and actually rarely get held up at this point. IMO more of a problem than the southbound Westlake and 9th stop is the northbound Westlake and 9th. Busses are constantly held up trying to turn north onto Westlake (from Blanchard) by cars trying to turn north onto Westlake from 9th (on the other side of the street from where this article is about). Usually these cars are coming directly out of the parking garage at 9th and westlake.

I’ve always thought a great spot improvement would be to make that section of 9th a one-way street so that less cars can block busses trying to turn. Beyond busses it’s also a bad pedestrian experience as you frequently have these cars encroaching on the crosswalk in both directions.


On second thought it wouldn’t even need to be made a one-way, they could simply block the right-turn lane with a curb. Cars could still drive down 9th in either direction to get to the parking garage, they just wouldn’t be able to leave the garage and directly turn right onto Westlake.