High-Risk Roads
C-470, US-85, and I-25
C-470 (State Highway 470) runs along the northern edge of Highlands Ranch connecting US-85 and I-25 in Lone Tree, with the Lucent Boulevard interchange anchoring the Highlands Ranch Town Center. US-85 (Santa Fe Drive) runs along the western edge, and the South Broadway and C-470 interchange was identified by the Douglas County Sheriff as the number-one most dangerous intersection in Douglas County. SH-177 (Broadway) meets C-470 at the southern terminus. The high-speed merges where these corridors meet residential collectors are where the worst Highlands Ranch crashes, and the most catastrophic injuries, tend to happen.