The forum will run from 6 to 8 p.m. at the National Nordic Museum in Ballard. Sound Transit CEO Dow Constantine and Seattle City Councilmember Dan Strauss, who represents the neighborhood, are expected to take part. Organizers say the discussion will cover the project’s timeline, efforts to reduce costs and what comes next.

Voters approved the extension a decade ago, but it is now not expected to be completed until 2042. The delay has frustrated some Ballard residents and transit advocates, who are pressing Sound Transit to produce a workable plan.

“We’re seeing how much Sound Transit is ready to fix their problems, and how much we’ll be needing to fix it for them through activism and working with the state legislature,” said Carl Aslund of Save Ballard Rail. He said he hopes the agency’s board is sincere about finding a solution, but added, “we don’t have it yet.”

Other major expansions have also been pushed back. The Everett extension, previously expected in 2036, is now projected for 2041. The West Seattle extension is now slated for 2035, five years later than its former target of 2030; construction is expected to start next year.

The delays and cost increases have raised broader questions about whether Sound Transit can deliver its planned network on schedule. Monday’s meeting will give residents an opportunity to hear the agency’s latest outlook and how it intends to address the project’s financial and timeline challenges.