Saw the old station from the new road as we drove past. It is merely a drive-by photo opp these days... if you want to stop, you'll have to drive past a mile or so before you can turn down onto the old Route 66 road and back up to the station.
Just down the road is the replica station, complete with a restaurant that is dedicated to Route 66. We stopped here for breakfast and the place was totally packed with travelers. Definitely stop for the experience and check out all the memorabilia, a ton of effort has gone into preserving the spirit of the old mother road here... great to see and experience.