CO 66 Travel Info
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State Highway 66 is a 22.7 mi (36.5 km) long east-west state highway in Boulder and Weld counties in Colorado. The highway extends from the foothills of the Rocky Mountains at a junction with US Route 36 southeast of Lyons, proceeding east through the northern edge of Longmont, to Platteville where it ends at US Route 85.
Modern SH 66 begins as a continuation ... more
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