High-Risk Roads
U.S. 36, U.S. 287, and the Diagonal Highway
The high-speed corridors around Boulder are where the most serious head injuries happen. Boulder County's Vision Zero program documents repeated fatalities on the U.S. 36 Denver-Boulder Turnpike from head-on and single-vehicle crashes, head-on and speed-related crashes on U.S. 287, and curve-related crashes and motorcyclist fatalities on Colorado 119, the Diagonal Highway between Boulder and Longmont. Inside the city, the 28th Street and Arapahoe Avenue intersection saw roughly 30 crashes at or near it in 2022 through early December. A crash at highway speed is exactly the kind of force that causes a traumatic brain injury.