This awful story is an indictment of both our healthcare and transportation systems. The design of Manchester through The Grove is undoubtedly a culprit in this hit-and-run. https://fox2now.com/news/missouri/gofundme-raises-thousands-after-healthcare-worker-critically-injured-in-hit-and-run-in-the-grove/
Even after a recently-completed "road diet," Manchester has supersized 15-foot lanes (and parking lanes that function like highway shoulders) that encourage speeding and minimize pedestrian visibility. This simply isn't appropriate for a highly walkable neighborhood.
This post really captures the disparity between what American engineers think passes for a walkable street and what actually does. Streets like Manchester put cars first. Pedestrians are an afterthought. https://twitter.com/modacitylife/status/1328984243540807682
Manchester is 50' wide curb-to-curb. You could easily fit this cross-section just by restriping—no heavy construction required. This isn't done because policy prioritizes moving speeding cars through the neighborhood above the lives of bicyclists and pedestrians.
The problem is that Manchester is a state highway (MO-100), so it's designed to accommodate heavy through traffic, including large trucks. That shouldn't be an excuse for its design, though—through traffic should be using I-64, which is less than half a mile to the north!