US-77 (OK)
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| Route information | ||||
| Maintained by ODOT | ||||
| Length: | 267.21 mi (430.03 km) | |||
| Major junctions | ||||
| South end: |
  I-35 / US 77 at the Texas state line |
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| North end: |
US-77 at the Kansas state line |
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| Highway system | ||||
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Oklahoma State Highway System
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| Location: | Thackerville |
| Length: | 0.50 mi (0.80 km) |
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| Location: | Purcell |
| Length: | 0.47 mi (0.76 km) |
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| Location: | Murray County |
| Length: | 10.30 mi (16.58 km) |
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| Location: | Norman–Oklahoma City |
| Length: | 9.07 mi (14.60 km) |
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| Location: | Lake Murray State Park and vicinity |
| Length: | 30.04 mi (48.34 km) |
In Oklahoma, U.S. Highway 77 runs north–south, paralleling Interstate 35, connecting Texas to Kansas and running for 267.21 miles (430.03 km) through the central part of the state. It passes through many major cities, including Ardmore, Oklahoma City and its suburbs, Guthrie, and Ponca City. It has four lettered spur routes.
US-77 was the first highway in Oklahoma to be paved entirely across the state from border to border. It has been a paved roadway since 1930.
US-77 enters the state along with I-35 but splits off at the first exit in Oklahoma. Four miles later, it passes through Thackerville. It junctions with State Highway 32 on the west side of Marietta.
North of Marietta, US-77 passes to the west of Lake Murray and its state park. It then enters Carter County and Ardmore, where it is named Commerce Street through the city limits over a four-lane divided thoroughfare that includes frontage roads on each side from just south of SH-199 (West Broadway) to NW 12th Street much like a freeway or expressway, though all intersections on Commerce are at-grade.
North of Ardmore, US-77 continues as a four-lane divided highway to Springer. It crosses State Highway 53 south of Springer. North of Springer, US-77 reverts to a two-lane highway and enters the Arbuckle Mountains, providing access to Turner Falls and having some hairpin curves over a section of roadway paved and constructed in the 1920s using prison labor from the Oklahoma State Penitentiary in McAlester. It then passes through Davis (where it has a brief concurrency with State Highway 7. North of Davis, it passes through unincorporated Joy and passes through Wynnewood, where it carries State Highway 29. It then passes through Pauls Valley, Paoli, and Wayne. Next, it enters Purcell, where it concurs with State Highway 39 and 74.
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Wikipedia