You can repeatedly add Board members to reduce corporate debt, and then kick them off the board. Kicking off the board takes an extra vote in the board meeting, but doesn’t seem to have any permanent consequences (honestly I expect this to get nerfed in the future). I’ve kicked the Widow off my board like four times.
You will need multiple Board meetings per station. But if you’ve decided what route to lay tracks, you should be able to start. Do you have the “Terrain Surveyed” quality? Look for a Storylet in Moloch Street named “The Next Stretch of Track.”