State Route 115 (US 129) Alcoa Highway Little River to Maloney Road

Knox County


The project along State Route 115 (US 129/Alcoa Highway), from north of Little River to south of Maloney Road in Knox County, includes widening the roadway for approximately 2.2 miles. Improvements follow the existing alignment and consist of widening the existing roadway to six lanes (three in each direction). New interchanges will also be constructed at Topside Road and State Route 168 (John Sevier Highway).

This project is part of a larger effort to reconstruct and widen Alcoa Highway from State Route 35 (Hall Road) to Cherokee Trail in Blount and Knox Counties. Due to the significant size of the overall project, the proposed improvements have been separated into seven smaller sections or phases. To read more about all improvements for the corridor, visit the Alcoa Highway project website.

Purpose and Need

Alcoa Highway is a major connection between the City of Knoxville and the Cities of Alcoa and Maryville, as well as providing a route to McGhee Tyson Airport and the Great Smoky Mountains National Park.

The proposed improvements for the heavily-traveled corridor are intended to increase capacity, correct roadway deficiencies, and reduce crashes in order to address transportation needs by improving the safety, efficiency, and operation of the roadway.


Alcoa Highway from north of Little River to south of Maloney Road is one of seven sections that will improve the corridor in Blount and Knox Counties. (See Alcoa Highway project website)

The section between Little River to Maloney Road will follow the existing alignment, widening the roadway to six lanes (three in each direction) with a concrete median barrier wall.

No left turn movements will be allowed along this section of Alcoa Highway. Interchanges and frontage roads will provide safe access to other local roads, local businesses, and neighborhoods.

The intersections at Topside Road and John Sevier Highway will be redesigned to provide access to Alcoa Highway via on- and off-ramps. Four new bridges will be constructed (at Topside Road, John Sevier Highway, Knox Creek, and CSX Railroad) to provide connections to either access ramps or frontage roads.

A greenway will be constructed to run the length of the project and will eventually provide a connection between the Knoxville and Blount County Greenways.

During construction, special measures will be taken to minimize impacts to utilities, the railroad, and lakes and streams in the area.

VIDEO: New traffic movements for Interchange
of Alcoa Highway & John Sevier Highway

VIDEO: New traffic movements for Interchange
of Alcoa Highway & Topside Road

Email Updates

To receive email updates on this project, including lane closure information, fill out and submit the form below.