There has been much discussion recently about what to do with the Arch grounds, or more specifically, how to better connect it with downtown.
The concept that seems to get the most attention is the idea of adding a "lid," covering three blocks of the depressed section of I-70 directly across from the Arch.
The lid idea, in my opinion, does not go nearly far enough. I think the depressed section could use some Zoloft.
The complete removal of I-70 through the heart of downtown would not only make the Arch grounds more accessible to visitors, it would also have a stimulative, transformative effect on the areas surrounding the Arch grounds. Laclede's Landing, in particular, would have a much stronger cnnection to the rest of downtown. As Michael Allen points out in his excellent commentary, it could also help spur development on the land that was slated for the Bottle District and free up additional land where the highway currently is.
It just makes sense.
STL Rising has a great take on this topic as well, as does Urban Workshop. And here is the Landmarks Association's official statement, which also advocates for the removal of I-70.