Colorado Preservation, Inc. is a 501(c)3 nonprofit charitable organization, Federal Tax number 74-2403583
The Plum Bush Creek Bridge in Washington County is a 1938 concrete rigid frame bridge carrying US 36 over Plum Bush Creek. It is a preservation-priority historic bridge associated with rural highway development on Colorado’s eastern plains.
The West Plum Bush Creek Bridge near Last Chance is a 1938 concrete rigid frame bridge carrying US 36 over West Plum Bush Creek. Listed in the National Register of Historic Places, it is a rare rural example of its bridge type and a preservation-priority historic bridge.