There is a security gate and fence at this point for the Millipore building that blocks access to Atlantic Street, which is now just part of the shipping/receiving/parking area for the building, effectively removing it as a street. Google has removed the street from Google Maps: https://www.google.com/maps/@38.6267836,-90.22448,197m/data=!3m1!1e3
Either a gate needs to be added, or perhaps Atlantic Street needs to be changed to a service road.