Interstate 70 / US Highway 6 (Silver Plume , Colorado)

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Interstate 70 runs for over 2200 miles from Cove Fort, UT to a park and ride lot east of I-695 in Baltimore, MD. The first interstate constructed was of I-70 in Missouri. In Breezewood, PA, there are traffic lights on I-70.

I-70 starts at I-15 near Cove Fort, UT, then treks east in Colorado and Kansas, through St. Louis, MO and through southern Pennsylvania. It ends at a park and ride lot in Baltimore, MD. It was supposed to continue to I-90, but strong neighborhood opposition stopped it.

US Highway 6 is the second longest US Highway behind US 20. It runs from Bishop, CA (US 395) to Provincetown, MA. From Bishop, it goes through Ely, NV and then Spanish Fork, UT and Denver, CO. It continues across Nebraska and northern Indiana. It bisects Connecticut and ends at the very end of Cape Cod in Provincetown, MA.