U.S. Route 72 Alternate (Alabama)
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| Route information | ||||
| Alternate route of US 72 | ||||
| Maintained by ALDOT | ||||
| Length: | 67.526 mi (108.673 km) | |||
| Major junctions | ||||
| West end: |
  US 43 / US 72 at Muscle Shoals
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  I‑65 / I‑565 at Decatur
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| East end: |
I‑565 / US 72 at Huntsville
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| Highway system | ||||
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Alternate US-72 exists in Alabama on the mostly south side of the Tennessee River between Muscle Shoals and Decatur, while US-72 follows on the north side of the river between Florence and Athens. Alternate 72 crosses the Tennessee River at Decatur, Alabama along with U.S. Highway 31 and follows the entire route of Interstate 565. SR-20 was co-signed with Alt US-72 from Muscle Shoals to Huntsville. SR-20 has since been truncated to the junction of I-65 just east of Decatur.
Originally, Alt US-72 turned off SR-20 on to SR-53 / Jordan Lane in Huntsville and followed it north 1-mile (1.6 km) to rejoin with US-72. With the completion of I-565 in the early 1990s, Alt US-72 was routed along with I-565 to the termination of I-565 at US-72.
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