For those curious on the track construction going on at King Street Station in Seattle. The new tracks, which will be used for freight trains and Sounder Commuter trains will start it’s “cutover” in June of 2008. This date however has changed a few times since it was originally announced but tentatively speaking, it “should” be around the Summer time.
Once the track work is finished, work will start on extending the Sounder platform to allow for longer train sets or multiple train sets.
The current arrangement in the long term doesn’t support the expected growth slated for King Street Station, which also includes Amtrak. The furthest stud track – King Street 7, will get a passenger platform that could be used for Sounder trains for the Seahawks or Mariners. That is still up in the air though and still would be a few years out but it would prevent the walking up and over the Weller Street overpass to either stadium.
Looking at the second photo above, the 3 tracks (L-R, Main 2, Main 1, King Street 1) will continue straight to the new connection. The platform will extend about 80-160 feet. King Street 2 will be extended and connected to the stub switch (middle of photo) This will allow direct access to King Street for the commuter trains.
Speeds will increase from 20mph to 30 or 40mph but that is pending on the Lander Street Overpass project
More information on the project can be found here