RK from St Louis on 4/25/2011 3:29:32 PM:
I didn't realize the trail was open to Machens. It would be easy enough to get to West Alton but I'm not aware of any trail that will get you across the Missouri River. You might be able to jump on 67 and cross the river on 67, work your way through Spanish Lake and then pick up the Riverfront Trail at the Chain of Rocks Bridge. Or as an alternative you could cross the Discovery Bridge into Alton(it has a bike lane), ride Route 3 to the McKinley Bridge, cross back over to Missouri and take the Riverfront Trail downtown. Just for kicks I might reverse route this on my bike in the next couple of weeks if we get a dry day. Its been nothing but rain lately.