Eric on 6/20/2019 11:32:05 PM:
As I said, we are considering something similar for 2020, but in my looking at maps (haven't ridden in the area), I was thinking about the following for the St. Louis connection:
Ride pretty much to the east end of the trail in Machens, then ride up to Portage Des Sioux, and then across on Portage Road over to Grafton Ferry Road, and take the Grafton Ferry to Grafton:
https://www.visitalton.com/business/detail/405/grafton-ferry
Once you're in Grafton, there is a buffered bike lane to Alton, where you can pick up the MCT Confluence trail which connects to the St. Louis Riverfront Trail, which leads to downtown. I'm not sure how easy it is to get from the riverfront to the Amtrak station, but in a pinch you could take the St. Louis Metro.
There also looks to be a bike lane on the 67 bridge across the Mississippi to Alton, but it doesn't look like there is a great way to get to that bike lane unless traffic is sufficiently light.
but PLEASE don't take any of this as a suggestion. Just thoughts of a similar-minded person looking at maps and not knowing anything about the situation on the ground, but trying to figure out a similar thing.