For a couple of miles between Kalama and Woodland, WA (neither of which are station stops for Amtrak), Amtrak (and UP and BNSF freight) trains run in the I-5 median. This means you can look out the right window and watch cars traveling along the freeway a few feet away from the train. (This is easier to do going n/b, since I believe the track is closer to the freeway lanes on that side.) I believe the Pioneer used to run for a short distance in the I-84 median in the Columbia Gorge.
Are there other places on the Amtrak system (as opposed to subways or other rapid-transit or commuter-rail systems) where the train travels or used to travel on the median of a freeway?
Are there other places on the Amtrak system (as opposed to subways or other rapid-transit or commuter-rail systems) where the train travels or used to travel on the median of a freeway?