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Tennessee State Route 400

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South end:  SR 91 in Johnson City
North end:  US 321 / SR 67 in Elizabethton
Counties  Washington County, Tennessee, Carter County, Tennessee

State Route 400 (SR 400) is a state highway in Washington and Carter counties in the U.S. state of Tennessee. It connects the cities of Johnson City, Watauga and Elizabethton.


Map of TN-400, Tennessee, USA

Route description

SR 400 begins as a pair of one way streets (Watauga and Unaka Avenues) at an intersection with SR 91 (which is also a pair of one way streets) in downtown Johnson City. It heads north to have an interchange with I-26/US 23/US 19W and continues northeast as a pair of one way streets. The northbound lanes then leave Watauga Avenue and turn northwest onto North Broadway Avenue and joins to the southbound lanes as Unaka Avenue and continues northeast to the city of Watauga where SR 400 crosses over the Watauga River at the Johnson City/ Watuaga city boundary. SR 400 passes through downtown Watauga and turns more southeasterly and leaves the city of Watauga and continues southeast until it comes to an intersection with Old U.S. Route 19E. It then turns south and crosses over the Watauga River again and enters the city of Elizabethton and continues south until its northern terminus at an intersection with U.S. Route 321/Tennessee State Route 67 in Elizabethton.


Tennessee State Route 400 Wikipedia

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