Regional transit leaders are facing a major financial challenge as Sound Transit works to address a projected $34.5 billion funding shortfall over the next two decades. This raises questions about the future of light rail expansion across the Puget Sound region, including Bellevue.
The gap is tied to the voter-approved Sound Transit 3 (ST3) plan, a long-term program designed to expand light rail, bus rapid transit, and commuter rail service. Updated financial projections show the plan may require tens of billions more than originally expected due to rising construction costs, inflation, and lower-than-anticipated revenues, according to Sound Transit.
At a recent board retreat, transit leaders discussed how to address the shortfall, emphasizing that the issue is long-term and not expected to impact current service. Officials say the most significant financial pressure would begin in the mid-2030s.
What It Means for Bellevue
For Bellevue, the short-term outlook remains stable. Existing and near-complete projects—including the Eastside’s 2 Line, are expected to move forward as planned.
However, the funding gap could affect future expansion projects that would further connect Bellevue to surrounding areas. One key project is the proposed South Kirkland-to-Issaquah light rail line, which runs through the Eastside and is part of the ST3 plan. Like other projects still in early planning phases, it could face delays or changes depending on how Sound Transit addresses its financial constraints.
Three Options Under Consideration
Sound Transit is currently evaluating three approaches to manage the funding gap:
- Advance current projects, delay future ones:
- Projects already under construction would continue, while those in earlier stages—such as some Eastside expansions—could be postponed.
- Prioritize regional connectivity:
- The agency could move forward with select high-impact projects, potentially including Eastside connections, while delaying others.
- Scale back the system:
- This option would reduce the scope of projects across the region, including shortening routes or eliminating planned stations.
Each scenario carries trade-offs and could shape how quickly additional light rail service reaches and expands within Bellevue.
Regional Impacts Could Still Be Felt Locally
Even if Bellevue projects are prioritized, changes elsewhere in the system could still affect local riders. Delays or reductions in Seattle or regional lines may impact overall connectivity, transfers, and commute times between the Eastside and other parts of the region.
Sound Transit has already taken steps to manage rising costs, including approving a 1% property tax increase as part of its funding strategy. 
Long-Term Outlook
The agency is expected to adopt an updated ST3 plan later this year, outlining how it will balance financial constraints with voter-approved projects.
