The crosswalk in question has one serious flaw for drivers and walkers, it's not at an intersection. It's there because they discontinued the sidewalk on the west side of the street and the crosswalk simply directs the walker to the sidewalk on the east side of the street with two lines outlining a walkway. Not the usual crosswalk marking of hash lines seen below.
Not far away is a similar sidewalk in Wildwood. Driving west on 466A a block before US 301 there is a sidwalk in the middle of the street. It's there because school parking is on the other side of the road. In this situation there is a sign that indicates drivers are to stop when pedestrians are present. No such sign is present at the crosswalk on St. Charles.