One of the biggest concerns about merging I-70 and Memorial Drive through downtown into one at grade boulevard is what would happen with the trucks? The answer is simple. Trucks would either be allowed on the new boulevard, which is the way it is now, or the road would prohibit through truck traffic.
Today, as I was driving on Memorial Drive, I was next to a full size, semi tractor-trailer rig. It really was no big deal. The truck did not slow traffic. It wasn't particularly loud, and it moved right through the area without any problem. I'm no trucking expert, but from years living about a half mile from a highway, I remember that you could hear the trucks going by at 60-70 miles per hour, but not the ones driving at 25-30 miles per hour through town.
Standing above the depressed lanes, or along the elevated lanes of I-70 next to Laclede's Landing, what you hear are those trucks zooming by at high speed. Moving truck traffic to a new Memorial Drive would possibly make the area quieter than it is now.
In terms of driving times and convenience, trucks should have no problem getting through the 1.5 mile stretch of a new boulevard the same way cars would. Maybe a 3 or 4 minute longer trip would be about it.
Trucks on a new Memorial Drive? Why not?