Interstate 40 Interchange at State Route 299

Cumberland County
Cumberland I-40 at SR 299

The Tennessee Department of Transportation (TDOT) plans to construct improvements to the Interstate 40 Interchange at State Route 299. The project will consist of intersection and operational improvements on SR 299 (Exit 338), including widening SR 299 within the interchange and improving sight distances to and from the interstate ramps. Other improvements, including turn lanes, intersection controls, modifications to entrance and exit ramps, and inclusion of Intelligent Transportation Systems (ITS) and lighting components, will be determined when the project is fully scoped.

Current Status: The project is under development. Preliminary engineering is underway.

Estimated construction start: This project is scheduled in TDOT’s 10-Year Project Plan to begin construction in Fiscal Year 2029.

Estimated completion*: TBD

Funding Type: TDOT anticipates that this project will be funded in part through the Transportation Modernization Fund.

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History and Background

This project is intended to modernize the interchange and improve operational characteristics in anticipation of growth in regional traffic volumes. 



Key Project Milestones


Concept Complete Fall 2024 (estimated)
Environmental Document Complete Fall 2025 (estimated)
Right-of-Way Acquisition
Spring 2026 (estimated)
Construction Fiscal Year 2029 (estimated)

Project Contacts

Rae Anne Bradley
TDOT Region 2 Regional Communications Officer (media)

Phone: 423.510.1164

Michael O’Donnell
TDOT Region 2 Project Management

Phone: 423-634-8622

*Subject to change