Description: As Seattle continues to grow, there will be opportunities for continued expansion of the regional Link light rail system. Potential expansion corridors are based on STP analysis as well as a review of previous Sound Transit and regional plans. These concepts reflect Seattle’s interest in continued growth of the rail system and would require additional analysis and evaluation. No funding is identified for these conceptual expansion corridors; the committed ST3 program extends into the 2040s. Regional growth and changing employment patterns are likely to increase demand for all-day service and improved off-peak direction travel on Sounder, the Puget Sound region’s commuter rail service operated by Sound Transit. Future investments, such as midday service, higher frequencies all day, and electrification could be important investments to making Sounder a key part of the region’s high-capacity rail network. Additional stations located in key growth centers should be considered to improve access and network connectivity
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Description: Community and mobility hubs combine transportation options, community spaces, and travel information into a seamless, understandable, and on-demand travel experience. They are located along major transit routes where frequent transit services intersect to improve connectivity and facilitate local neighborhood connections, especially in historically underserved areas. They may feature People Streets and Public Spaces elements and goods delivery elements. As the regional Link light rail system expands in Seattle, we will continue to focus investment on multimodal access to station areas, making transit a safe, secure, pleasant, and reliable choice for travelers. Expansion of RapidRide and high-quality, high-frequency bus services offer opportunities for focused hub investments and other hub development at locations across Seattle away from the substantial improvements occurring at Link stations. As new mobility options are introduced into Seattle, community and mobility hubs can serve as important locations where these options are integrated into the larger transportation system.
Description: The updated FTN has two primary components: it establishes aspirational frequency targets alongside a transit corridor map illustrating how frequency targets are proposed to be distributed throughout the city. Transit corridors that are part of the updated FTN are classified into three categories: Frequent: Better than 10 minutes. 6-minute to 10-minute service from 6 AM–7 PM, 10-minute to 15-minute service from 7PM to midnight, and 30-minute service from midnight to 6AM, every day. This category captures a vision that the best transit service is even more frequent than 10-minutes and that SDOT is willing to invest in certain Metro RapidRide lines and other very high frequency routes. Frequent 10 minutes. 10-minute service from 6 AM–7 PM, 15-minute service from 7PM to midnight, and 30-minute to 60-minute service from midnight to 6AM, every day. This is a high frequency category for main transit corridors, including some RapidRide corridors. Frequent 15 minutes. 15-minute service from 6 AM–9 PM, 30-minute service from 9PM to midnight, and service as needed between midnight and 6AM, every day. This designation aligns with parking flexibility areas monitored by the Seattle Department of Construction and Inspections (SDCI), in which parking minimums for new housing development are reduced or removed near frequent transit operating at least every 15 minutes.
Description: The Transit Element Chapter identifies priority transit corridors for SDOT and its partners to consider for capital investment. Corridors are tiered by investment level based on the extent of identified transit priority needs and importance of supporting transit performance, climate, and equity goals. These corridors were identified because they: Support access and integration with regional investment, such as Link light rail Function as the most critical to support climate targets Support access to opportunity goals of the TEF Improve transit reliability on key corridors included in the Frequent Transit Network Address needs identified in the draft Transit Performance Policy6 Address needs heard from community in the STP engagement process Unlike previous SDOT transit master plans, priority transit corridors are not organized under an implementing program (e.g., RapidRide, Transit-Plus Multimodal Corridor Program, etc.). Rather, they are grouped by the level of transit priority aspired to and accounted for in STP network integration policy and mapping. This is intended to provide SDOT with flexibility to determine an implementation approach—including working with transit agency partners—that best match funding and implementation priorities. The corridors are classified into 3 tiers, with each serving a different role in the transit network. The STP Capital Investment Corridors Map is based on an analysis of transit needs and the future benefit of transit capital investment. The analysis focuses on Seattle’s arterial street network, including streets that carry transit today and that might in the future7. The STP Capital Investment Corridors Map does not imply end-to-end corridor projects (e.g., converting the KCM Routes 36 and 49 to a new RapidRide line), but rather recommends a level of investment for key segments of the current and future transit network. The three designations (see map legend) indicate the importance of and opportunity for capital improvements, particularly transit priority treatments such as bus lanes, queue jumps, Transit Signal Priority (TSP) and improvements for passengers accessing and waiting for transit.
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