Sound Transit is looking at a cheaper option for a tunnel through Bellevue.
The new tunnel would go under 110th instead of 108th, meaning the main station would be one “superblock” away from the Bellevue Transit Center, at 110th and 4th. This tunnel would also be about half the length of the preferred tunnel alternative – cutting costs significantly.
This alternative also appears to avoid cutting off access to Meydenbauer Center and the adjacent buildings’ loading dock, as the C2T option had before. It would turn east underground and run through the northern half of the City Hall site before crossing 405.
There’s an additional upside and downside here. The upside is that it’s likely the next station could be on the other side of 405 – where Bellevue City Council wants more development. The downside is that the Bellevue Transit Center station would be farther from the residential development north of NE 8th.
Overall, it cuts the length of tunneling from 5000′ to about 2000′.