U.S. Route 25W (US 25W) is the western branch of U.S. Route 25 from Newport, Tennessee, where US 25 splits into US 25E and US 25W, to North Corbin, Kentucky, where the two highways rejoin. US 25W has been included in the U.S. Highway System since the system's inception in 1926. Route description Tennessee US 25W carries the unsigned designation of State Route 9 (SR 9) throughout the state. US 25 splits into US 25W and US 25E on the west side of downtown Newport. Here, SR 32 goes north on US 25E and US 70/SR 9/SR 35 continue on US 25W. The concurrency then has a full interchange with I-40 (Exit 432 A/B) before US 411/SR 35 separate and turn south. US 25W/US 70/SR 9 then leave Newport and cross into Jefferson County. Immediately after crossing the line, they intersect SR 363 in Reidtown. They then cross Douglas Lake, parallel to the I-40 bridge. Immediately after crossing the lake, they intersect SR 113. The highway now enters Dandridge and SR 66 joins the concurrency. US 25W/US 70/SR 9/SR 66 then intersect and become concurrent with SR 92, passing by downtown to the north and SR 66 becoming unsigned at this intersection. They then separate from SR 92 and have another interchange with I-40 (Exit 415), with SR 66 separating and having an unsigned concurrency with I-40 west before leaving Dandridge. US 25W/US 70/SR 9 continue west through rural Jefferson County before coming to an intersection with Snyder Road (which connects to SR 66 and Sevierville) and SR 139, becoming concurrent with SR 139 before crossing into Sevier County. Once across the line, SR 139 separates and turns south towards Kodak, and US 25W/US 70/SR 9 continue west to cross into Knox County. The highway then has an interchange with US 11E/SR 34 in Carter (also known as Trentville), with US 11E joining the concurrency as they enter Knoxville. US 11E/US 25W/US 70/SR 9 then intersect SR 168 (Governor John Sevier Highway) before crossing a bridge over the Holston River and having another interchange with I-40 (Exit 394), where SR 9 and US 25W run concurrent with the interstate for a short ways before concurrent with I-640 (Exit 385). They then have interchanges with Mall Road (which provides access to Knoxville Center, Exit 8), US 441/SR 33/SR 331 (Broadway, which provides access to Fountain City, Exit 6), and I-75/I-275 (Exit