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SH-55: Pear Lane to Middleton Road

ITD is working toward improving State Highway 55 from Pear Lane to Middleton Road.

This project will achieve environmental clearance and the preliminary design of safety and capacity improvements on State Highway 55 from Pear Lane to Middleton Road in Canyon County.

ITD está trabajando en mejorar State Highway 55 de Pear Lane hasta Middleton Road. Para pedir información en español, contacte (208) 334-8002.

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Preliminary design plans

Click here for details

Designing for current and future needs

Following supportive community feedback, ITD is pursuing a comprehensive plan for improvements to this corridor. Key elements include:

  • Innovative intersection designs
  • Additional travel lanes and turn bays
  • Managed access

You can view the details, as presented to the public in February 2021 by clicking the link below.

ITD's SH-55 Recommended Plan

SH-55 in Canyon County

SH-55 is a primary transportation and freight corridor through Idaho.

The area around the highway in Canyon County is growing rapidly, causing traffic volumes to increase beyond what SH-55 was designed to handle. In many areas, the highway has not been widened since it was constructed in the 1930s.

The goal of this study is to meet mobility, safety and capacity needs on this corridor from now until 2045.

What this study includes

This project began in the summer of 2019 and is expected to last for two years. It includes:

  • Completing a traffic and safety analysis.
  • Gathering input from agencies, municipalities and members of the public who have a stake in SH-55.
  • Developing plans for managing access on and off SH-55.
  • Completing an environmental evaluation.
  • Developing preliminary design plans for future projects.

ITD will follow the National Environmental Policy Act (NEPA) process throughout this project. The NEPA process is required for ITD to use federal funding for future projects on SH-55.

Winter/Spring 2022
ITD is moving forward with a phased approach. Due to traffic volumes and available funding, ITD will begin final design for improvements between Farmway and Middleton Road.
December 2021
Environmental document sent to Federal Highway Administration for review, comment and approval.
Spring 2021
Submit recommendation for environmental clearance and design approval.
Early 2021
ITD hosted a public design review from Jan. 21-Feb. 10, 2021.
December 2019
ITD hosts community working group to gather input about issues and concerns regarding SH-55.
Fall 2019
ITD launches the SH-55, Pear Lane to Middleton Road study to build upon previous work on this corridor.
ITD completed a multi-year study of the entire SH-55 corridor in Idaho. The study identified a need for more extensive improvements between Pear Lane and Middleton Road
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