Alabama State Route 20
|Maintained by ALDOT|
|Length:||73.978 mi (119.056 km)|
|West end:||SR 69 northwest of Florence|
| Natchez Trace Parkway northwest of Florence
US-43 / US-72 / SR-157 at Florence
US-72 Alt. / SR-157 at Muscle Shoals
SR-67 at Decatur
US-31 at Decatur
I‑65 / I‑565 / US-72 Alt. at Mooresville
|Counties:||Lauderdale, Colbert, Lawrence, Morgan, Limestone|
State Route 20 (SR-20) runs from the Tennessee state line (State Route 69) northwest of Florence, Alabama, east to I-65 east of Decatur in the northwestern Alabama. It crosses the Tennessee River at Florence (with US-43, US-72, SR-17, and SR-157) and also at Decatur (with US-31 and Alternate US-72)
|This section does not cite any references or sources. (December 2007)|
State Route 20 was created when Alabama renumbered State Route 41 with a statewide renumbering in 1929. The original route ran from US-72 at Muscle Shoals to US-31 at Decatur. This portion was named the Joe Wheeler Highway and markers commemorating this are still located on East (Decatur at ailroad/Church Streets) and West (Tuscumbia-Old Lee Highway) ends. In 1931, Highway 20 replaced State Route 2 following US-72 west to the Mississippi state line west of Margerum and in 1936 was extended east to Huntsville.
1957 saw many changes to SR-20. It was replaced again by SR-2 along US-72 to the Mississippi state line, and in turn SR-20 replaced SR-2 running north to Florence and northwest of Florence to the Tennessee state line (State Route 69), forming a route popularly known as New Savannah Highway. Highway 20 was also re-aligned to a much more direct route between Decatur and Huntsville, bypassing the town of Madison.
Beginning in the early 1980s, the eastern terminus of Highway 20 began retreating to the west. The original terminus was at Clinton Avenue and US-231/US-431 in downtown Huntsville. With the construction of I-565 in the early 1990s along the route of Highway 20 east of I-65, Highway 20 was slowly pulled back to its current terminus at the junction of I-65 and becomes I-565.
|Lauderdale||0.000||0.000||SR 69 north – Savannah||Tennessee state line|
|7.645||12.303||Natchez Trace Parkway||interchange|
|17.162||27.620||SR-133 south (Cox Creek Parkway) to US-43 north / US-72 east – Athens, Joe Wheeler State Park|
|Florence||22.048||35.483||US-43 north / US-72 east / SR-13 north / SR-17 north (SR-2 east) – Port of Florence||Western end of US-43 / US-72 / SR-2 / SR-13 / SR-17 concurrency; interchange|
|Tennessee River||22.795||36.685||O'Neal Bridge|
|24.475||39.389||SR-184 east (Second Street) – Muscle Shoals, Sheffield|
|Tuscumbia / Muscle Shoals||27.803||44.745||US-43 south / SR-13 south / SR-17 south / US-72 west (SR-2) – Russellville, Corinth, Tuscumbia||Eastern end of US-43 / US-72 concurrency; western end of US-72 Alt. concurrency|
|29.870||48.071||SR-133 north / SR-157 north (Wilson Dam Road) / CR-57 south – Airport||west end of SR-157 overlap|
|32.189||51.803||SR-157 south – Moulton, Cullman||Eastern end of SR-157 concurrency; no left turn westbound|
|Lawrence||Town Creek||43.103||69.368||SR-101 – Lexington, Hatton, Wheeler Dam, Joe Wheeler State Park|
|Courtland||50.609||81.447||SR-33 south – Moulton, Courtland Historic District|
|Morgan||65.780||105.863||SR-67 south (Beltline Road)|
|Decatur||69.147||111.281||US-31 south (6th Avenue / SR-3) – Hartselle||Western end of US-31 / SR-3 concurrency|
|68.484||110.214||Steamboat Bill Memorial Bridges over Tennessee River|
|Limestone||72.130||116.082||US-31 north (SR-3) – Athens, Calhoun Community College||Eastern end of US-31 / SR-3 concurrency; interchange|
|73.978||119.056|| I‑65 – Nashville, Birmingham
I‑565 east / US-72 Alt. east – Huntsville
|Eastern terminus and signed as exits 1A (south) and 1B (north); I-65 north exit 340, south exit 340A-B|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
Several sections of Old Highway 20 still exist:
- Lauderdale County Road 200 through Sullivans Crossroads, Central Heights, Lovelace and McGee Town, known as Old Savannah Highway.
- Lauderdale County Road 14 from McGee Town to Florence
- Colbert County Road 22 through Leighton.
- Jefferson Street through Courtland
- Old Trinity Road between Trinity and Decatur
- Old Highway 20 through Mooresville - The section east of Mooresville is part of the 1957 alignment.
- 1936 Alignment
- Mooresville Road north of Mooresville through Belle Mina to Old Highway 20.
- Old Highway 20 east through Greenbrier to County Line Road.
- County Line Road north to Palmer Road.
- Palmer Road east to Downtown Madison.
- Old Madison Pike from Madison to I-565 / Exit 15.
- 1957 Alignment
- Madison Boulevard from I-565 / Exit 5 to I-565 / Exit 13.
- Governors Drive in Huntsville from I-565 / Exit 17 to Clinton Avenue.
- Clinton Avenue in Huntsville to US-231/US-431, Memorial Parkway.
- Media related to Alabama State Route 20 at Wikimedia Commons