Oklahoma State Highway 4
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| State Highway 4 | |||||||
| Section 1 | |||||||
| Length: | 41.7 mi (67.11 km) | ||||||
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| South end: |  I-44/H.E. Bailey Turnpike south of Bridge Creek |
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| North end: |  OK-66 in Yukon |
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| Section 2 | |||||||
| Length: | 12.2 mi (19.63 km) | ||||||
| West end: |  U.S. 259 |
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| East end: |  AR-4, Arkansas state line |
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State Highway 4, abbreviated as SH-4 or OK-4, is a designation for two distinct highways maintained by the U.S. state of Oklahoma. One of them serves as an important route through the suburbs west of Oklahoma City, while the other connects U.S. 259 to the Arkansas state line west of Cove, Arkansas.
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[edit] Central Oklahoma
The western Highway 4 is 41.7 miles (66.7 kilometers) long. It begins at the western terminus of the H.E. Bailey Turnpike Spur south of Bridge Creek, Oklahoma, and immediately curves due north. It is a two-lane road until it reaches OK-37, where it expands to four lanes. Seven miles (11.2 km) later, it begins a duplex with OK-152 in the town of Mustang. One mile (1.66 km) later, OK-4 continues northward along Mustang Road toward Interstate 40 and Yukon.
After crossing I-40, OK-4 becomes a two-lane road once again until entering Yukon, at which point it becomes a four-lane road again. It meets OK-66, once Route 66, in Yukon. Seven miles (11.2 km) later, it meets the Northwest Expressway (OK-3). It lasts for just three miles (4.8 km) longer until ending at Edmond Road in Piedmont.
[edit] History
Historically, the western Highway 4 ended at Route 66 in Yukon. It was later extended to OK-152 in Mustang, later OK-37, and most recently to Interstate 44.
[edit] Notes
- Just after crossing OK-3, there is a standard distance sign listing Piedmont and "END OF ROUTE", giving the distance to the terminus of OK-4. This is a relative rarity on Oklahoma highways.
[edit] Eastern Oklahoma
The eastern Highway 4 is 12.2 miles (19.6 km) long. It begins at U.S. 259 and goes generally east-west, passing through the unincorporated communities of Smithville and Watson. After crossing the Arkansas state line, it becomes Highway 4.
