There is a heavily used unofficial underpass here. It is a large (8ft diameter) concrete culvert that seldom has water in it. I have contacted the transportation authority for this trail and they claimed it would cost approx $1 million to put in a proper underpass. I am not holding my breath for that, but in the meantime, it would be very beneficial to have it added to the map. This underpass avoids a long, steep uphill bypass to either Ken Caryl or Chatfield. 