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Trimble County: U.S. 421 Turn Lanes into Trimble County High School Project - 05 8712

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Purpose
Improve safety along U.S. 421 by adding turn lanes into Trimble County High School.
​Type of Project
Construct a northbound left turn lane on US 421 to allow for turning vehicles into the Trimble County High School entrances.
A left turn lane is being added for northbound traffic to facilitate the turning movement into the school, but it is being extended all the way to the U.S. 421/KY 625 intersection.  That intersection provides a more logical terminus.

Based on traffic counts gathered during the preliminary design phase, a left turn lane is warranted for vehicles turning onto KY 625 from U.S. 421. 

Selected Alternative #2: Due to right of way and utility impacts, it was decided to widen to the west side of U.S. 421 only.  US 421 will taper from 2-11' through lanes to 2-11' through lanes and a 12' left turn lane within the project area. *From Alternatives below
​Project Timeline

As of Summer 2023 (SUBJECT TO CHANGE*):

  • Overhead utility relocations are set to begin in April 2023.
  • KYTC has acquired all necessary right-of-way for the project.
  • KYTC anticipates the pr​oject will be let in Fall 2023.
  • KYTC anticipates construction starting in late Fall 2023, with the majority of the road widening construction to be completed during Summer 2024, when school is not in session.
*The above project milestone dates are subject to change in the 2024 Highway Plan.

Non-selected alternatives

During the preliminary design process, KYTC reviewed three widening alternatives for adding a turn lane:

  1. Widen to the east side of US 421
  2. Widen to the west side of US421
  3. Widen to both sides of US 421
Selected Alternative #2: Due to right of way and utility impacts, the project team decided to widen to the west side only.  US 421 will taper from 2-11' through lanes to 2-11' through lanes and a 12' left turn lane within the project area.
​Project Manager
Kameryn Underwood
Email: kameryn.underwood@ky.gov
Phone: 502.764.0530 

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This page is maintained by KYTC District 5 Staff, who may be contacted to make corrections or changes.

​Page Last Updated: 04-21-2023

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