I put a temporary change on https://www.openstreetmap.org/way/161767497
in changeset
https://www.openstreetmap.org/changeset/105064704#map=19/39.89511/-104.68210
to prohibit all traffic into the airport through this piece of road as an experiment to see if OSRM will simply use another sneak path or will it use Peña as it should...