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Alcoa Highway: SR-115 (US-129) - Knox and Blount Counties

Project History

In 1989, the Tennessee Department of Transportation (TDOT) prepared a feasibility study for improvements to State Route 115 (US. 129/Alcoa Highway) between State Route 35 and the Cherokee Trail Interchange. After the study was completed in 1989, the City of Alcoa retained a consultant to review it, and to make recommendations with regard to the Blount County portion. The Metropolitan Knoxville Airport Authority was also involved in this process. The Knoxville/Knox County MPO also retained a consultant to review the study, and to make recommendations with regard to the Knox County portion.

The resulting functional design developed by consultants for the City of Alcoa and the Knoxville/Knox County MPO incorporates the following significant features:

  • No left turns and no median cuts on main line
  • No signals on main line (for 20-year study period)
  • One-way frontage roads where warranted
  • Three lanes of through traffic in each direction on main line
  • Liberal use of right-in and right-out turns
  • Moderate use of interchanges and crossovers
  • Knox County – four new grade separations
  • Blount County – six new grade separations

This plan was presented to TDOT in 1993.