Colorado State Highway 257 partially coincident with Colorado State Highway 392
At Greeley, SH 257 has two interchanges: one with U.S. Route 34 (US 34) and one with U.S. Route 34 Business (US 34 Bus.). Because the junction with US 34 Bus. is so close to its terminus, the two interchanges are just 0.3 miles (0.48 km) apart. Both are diamond interchanges, but only the US 34 intersection has complete access.SH 257 then heads northward, and begins to curve northwest over the Cache la Poudre River and into Windsor. It abruptly turns west and begins a concurrency with intersects Colorado State Highway 392 (SH 392) along Main Street. About one mile (1.6 km) later, SH 257 turns back northward at 7th Street and ends its concurrency with SH 392. SH then heads north to SH 14, where it terminates on the town limits of northwestern Severance.
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