Oklahoma State Highway 20
From Wikipedia, the free encyclopedia
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| State Highway 20 | |||||||
| Length: | 144 mi (231.7 km) | ||||||
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| West end: |  OK-18 near Ralston |
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| East end: |  MO-43 at the Missouri state line |
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State Highway 20 (abbreviated OK-20 or SH-20) is a highway in northeastern Oklahoma. Its eastern terminus is at the corner of Oklahoma, Arkansas, and Missouri near Southwest City, Missouri; its western terminus is at State Highway 18 near Ralston.
The easternmost miles run north/south along the Oklahoma/Arkansas state line, and along this stretch the highway is duplexed with Arkansas's Highway 43. This is the only place where two state highways from different states are duplexed. In fact, the northernmost mile of OK-20/AR-43 jogs slightly to the west, meaning that in this mile, AR-43 is entirely located in Oklahoma. The highway continues northward into Missouri at the point where the Oklahoma, Arkansas and Missouri borders meet, and thereafter becomes Route 43. This unique feature has led many roadgeeks to mention OK-20/AR-43 on their websites.
List of cities and towns on OK-20:
