Tennessee State Route 20

Infobox road
state=TN
type=TN

route=20
alternate_name=
maint=TDOT
length_mi=143.04
length_round=2
length_ref= [http://www.tdot.state.tn.us/materials/pavement/Documents/Region3(All%20Counties)(PROTECTED).xls TDOT Region 3 Pavement Condition Data] ] [http://www.tdot.state.tn.us/materials/pavement/Documents/Region4(All%20Counties)(PROTECTED).xls TDOT Region 4 Pavement Condition Data] ]
established=1917
direction_a=West
starting_terminus=jct|state=TN|US|412|US|51 at Dyersburg
junction=jct|state=TN|US|70A|US|79 near Bells
jct|state=TN|I|40 at Jackson
direction_b=East
ending_terminus=jct|state=TN|US|43 at Summertown
cities=Dyersburg, Jackson, Lexington, Parsons, Linden, Hohenwald, Summertown
counties=Dyer, Crockett, Madison, Henderson, Decatur, Perry, Lewis, Lawrence, Maury
previous_type=Dual
previous_route=19
next_type=Dual
next_route=21
commons=

State Route 20 (abbreviated SR 20) is a 143.04 mile long west-east primary state route beginning in Dyersburg and ending near Summertown. SR 20 is unsigned and overlapped with US 412, except a short section between Hohenwald and Summertown.

Route description

SR 20 begins in Dyersburg at an expansive parclo interchange at the route's junction with US 51, SR 211, and hidden SR 3. SR 20 begins as a four-lane expressway with partial access control and continues east traversing mostly farmland through rural Dyer, Crockett, and Madison counties. At Jackson, Tennessee, SR 20 remains hidden and follows US 412 Business through the city while US 412 is overlapped with Interstate 40 between Exit 79 and Exit 87. SR 20 follows Hollywood Drive and North Parkway through the city of Jackson and is briefly overlapped with US 70 in east Jackson. The route is a two-lane highway on Hollywood Drive and US 70 and is a mix of four-lane divided or five-lane undivided on North Parkway inside Jackson. Beyond Jackson, SR 20 resumes its hidden overlap with US 412 and continues east toward Lexington as a two-lane highway. Construction is in progress to expand this route to a four-lane highway on a section between the Madison County Line and Crucifer. SR 20 between Chesterfield and Summertown is largely a narrow two-lane rural route carrying a 55-MPH speed limit. State Route 20 is designated as part of the "Delta Development Highway System" [http://www.dra.gov/pdfs/transportation/11.%20Tennessee.pdf Delta Regional Authority, State of Tennessee] ] throughout West Tennessee and carries a Tennessee Scenic Parkway designation from Lexington to Linden and again from Hohenwald to SummertownTennessee Department of Transportation [http://www.tdot.state.tn.us/Maps/county/default.htm County Maps] and [http://www.tdot.state.tn.us/Maps/city/ City Maps] ] .

Counties traversed

SR 20 traverses the following counties (west to east) shown in the table below.

**Counties traversed by State Route 20**
County	miles	kilometers
Dyer	12.36	19.89
Crockett	22.31	35.90
Madison	22.09	35.55
Henderson	24.96	40.17
Decatur	9.16	14.74
Perry	24.89	40.06
Lewis	22.20	35.73
Lawrence	4.52	7.27
Maury	0.55	0.89

History

Prior to 1981cite encyclopedia|year=1981-1982|title=1981 Tennessee Official Transportation Map|encyclopedia=|publisher=Tennessee Department of Transportation|location=Nashville, Tennessee] and dating back as far as 1958cite encyclopedia|year=1959|title=History of the Tennessee Highway Deparmement|encyclopedia=|publisher=Tennessee State Highway Department, Highway Survey Planning Division|location=Nashville, Tennessee|id=Page 54] , SR 20 at its western end extended beyond Dyersburg following what is now SR 210, US 51, SR 211 and SR 104 to Heloise, Tennessee on the Mississippi River in extreme western Dyer County.

Future

Tennessee Department of Transportation currently has plans to expand existing SR 20 from two-lane to four-lane or completely reconstruct the route on a new alignment from Interstate 40 in Madison County to the Tennessee River near Perryville. Construction is scheduled to begin in 2008 to widen a portion of SR 20 to four-lanes from the Madison County line to Crucifer Road [http://www.tdot.state.tn.us/roadprojects/2007/ 2008-2010 Transportation Improvement Program] ] .

Major intersections

ee also

*U.S. Route 412

External links

* [http://www.tdot.state.tn.us Tennessee Department of Transportation]
* [http://www.dra.gov Delta Regional Authority]

References

Wikimedia Foundation. 2010.

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Tennessee State Route 20

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