Crash Corridors
C-470, US-85, and I-25
Highlands Ranch funnels nearly all of its traffic onto a few high-volume routes. C-470 (State Highway 470) runs along the northern edge, with heavy merge and exit congestion at the Lucent Boulevard interchange near the Town Center, where commute-period bottlenecks drive rear-end and lane-change crashes. US-85 (Santa Fe Drive) runs along the western edge, and the South Broadway and C-470 interchange was ranked by the Douglas County Sheriff as the number-one most dangerous intersection in Douglas County. I-25 runs just east through Lone Tree, with the Lincoln Avenue and RidgeGate Parkway interchange a documented high-accident location. Stop-and-go on these corridors is where most Highlands Ranch rear-end crashes happen.