High-Crash Corridors
I-25, SH 83 (Parker Road), SH 88 (Arapahoe Road), E-470, and C-470
Interstate 25 runs through and adjacent to Centennial with a major interchange at Arapahoe Road that CDOT and Arapahoe County have both documented as a historically high-accident corridor, with emergency-responder access difficulties noted in official feasibility studies. State Highway 83 (Parker Road) descends into Centennial where it interchanges with Arapahoe Road; a CDOT safety study identifies narrow shoulders, numerous access points, steep side slopes, wildlife crossings, and high traffic growth as documented crash-contributing factors. State Highway 88 (Arapahoe Road) crosses Centennial with three lanes in each direction. E-470, the toll road crossing Arapahoe County, and C-470 (SH 470), which terminates at I-25 near the Lone Tree and Centennial boundary, complete a road network where high speeds and dense commuter traffic turn a moment of distraction into a serious crash.