
TriMet has continued to push for expansion of the Yellow Line, with plans to extend the line into Washington state across the proposed new I-5 bridge
Taylor Marks
Cascade Policy Institute
Over-promised and under-delivered.
Throughout its 18-year life, TriMet’s Yellow Line MAX has never met its promised ridership projections.
In fact, just before the pandemic hit, Yellow Line ridership was more than 25 percent lower than where it was projected to be for 2020. Following the COVID-19 drop-off in ridership, TriMet now doesn’t expect transit ridership to hit pre-pandemic levels until sometime after 2045.
Because of low ridership, TriMet is failing to abide by its commitments to service frequency. TriMet promised the Federal Transit Administration that Yellow Line trains would arrive every 10 minutes during peak hours and every 15 minutes off-peak. Instead, Yellow Line trains run every 15 minutes during peak periods and every 30 minutes during other parts of the day.
Despite this consistent underperformance, TriMet has continued to push for expansion of the Yellow Line, with plans to extend the line into Washington state across the proposed new I-5 bridge.
Is slow, low-ridership light rail really the best usage of lane space on the proposed I-5 bridge? Or, should the new bridge instead expand lane capacity for trucks and cars usage to reduce congestion on the region’s freeways?
Taylor Marks is a Research Associate at Cascade Policy Institute, Oregon’s free market public policy research organization.
Also read:
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- WA and OR scale back I-5 Bridge ambitions as cost balloonsA $14.4 billion price tag prompts Washington and Oregon leaders to delay portions of the I-5 bridge project and prioritize just the main spans.
- Letter: ‘Now we have Engineer Bob telling us the I-5 Bridge needs replacing because it is built on shifting sand with wooden structures’Amboy resident Thomas Schenk critiques Democrat leadership, tax policies, and the addition of light rail to the I-5 Bridge, while urging Republican voters to participate more in midterm elections.
- The I-5 Bridge is vulnerable to collapse, but apparently not that vulnerableState leaders and Vancouver’s mayor warn about bridge safety, but insist it’s safe enough for daily use as they focus on moving forward with a costly replacement including light rail—despite decades of public resistance.
- Opinion: ‘This is not the best and most efficient use of the taxpayers’ funds’Ken Vance critiques the announced $14.4 billion I-5 Bridge replacement, questioning funding gaps, the insistence on light rail, unaddressed congestion, and transparency from state officials.






