Cimarron Turnpike
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| Route information | |
| Length: | 59.2 mi (95.3 km) |
| Existed: | 1975 – present |
| Component highways: |
 US-412 (entire length) |
| Major junctions | |
| West end: |
  I‑35 / US-64 near Perry, OK
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 US-77 near Perry, OK US-177 in Noble County
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| East end: |
 US-64 / SH-48 at Westport, OK
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| Location | |
| Counties: | Noble, Pawnee Payne |
| Highway system | |
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Oklahoma State Highway System
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The Cimarron Turnpike is a toll road in north-central Oklahoma. The route travels 67 miles (108 km), from an interchange with Interstate 35 (I-35) north of Perry, to Westport, just west of Tulsa. The route also consists of a 7.2-mile (11.6 km) spur which runs from the mainline southwest to an interchange with U.S. Route 177 (US-177) north of Stillwater.
The entirety of the Cimarron Turnpike is concurrent with US-412 except for the Stillwater spur. At either end of the Turnpike, US-412 begins (or ends, depending on direction) a concurrency with US-64; thus, it can be said that US-64 provides a free, but not controlled-access, alternative to the toll road.
The Cimarron Turnpike opened to traffic in 1975. The US-412 designation was applied to the Cimarron Turnpike in 1988.
The Cimarron Turnpike, carrying US-412, passes through Noble, Payne, and Pawnee Counties. The highway heads east from I-35 to its first interchange, Exit 3, which provides access to US-77. The first mainline toll plaza is just west of Exit 15, a cloverleaf interchange with no straight-line ramps (forcing all traffic getting on or off to pass through the toll plaza) connecting the turnpike to US-177. East of the US-177 interchange, the highway curves to the south, crossing Black Bear Creek. US-412 then meets US-64 once again, interchanging with it at Exit 23 east of Morrison. The turnpike then turns back east, with a spur route (accessible only from the westbound turnpike) branching off to the southwest toward Stillwater. The Lone Chimney service plaza, a twenty-four-hour concession area, is located in the median of the turnpike east of the interchange with the spur.
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Wikipedia