Loop 303, Lake Pleasant Parkway to I-17 Improvements

ADOT held a virtual public meeting on April 17, 2024 to provide details the design of Loop 303 improvements to address growing traffic demands.

Meeting Recording and Presentation

Virtual Public Meeting Presentation

Virtual Public Meeting Presentation Script

Public Meeting Summary

On October 20, 2021, ADOT held a virtual public meeting to provide information about the proposed near-term and long-term improvement plans to Loop 303 between Lake Pleasant Parkway and Interstate 17.

• Meeting Summary
• Meeting Slides - English Script
• Meeting Slides - Spanish Script

Draft Air Quality Report (2025)

Draft Noise Report (2024)

Loop 303, Lake Pleasant Parkway to I-17 Final Design Concept Report

Appendices

• Appendix A - Summary of AASHTO Controlling Design Criteria
• Appendix F - Final Drainage Report
• Appendix B - Estimated Engineering Construction Cost
• Appendix G - Roadway Distress Assessment
• Appendix C - Design Roll Plots
• Appendix H - Initial Design Concept Report Summary of Comments
• Appendix D - Construction Sequencing
• Appendix I - October 20, 2021 Public Meeting Summary
• Appendix E - Final Project Assessment

In addition to the new traffic interchanges, the project also included:

• New bridges on Loop 303 over 51st and 43rd avenues
• The extension of the southbound frontage road from 43rd to 51st avenues
• Drainage improvements at 51st and 43rd avenues
• New signals at ramp and crossroad intersections
• New signs, pavement markings and lighting
• The 51st Avenue interchange was shifted slightly to the west to accommodate the realignment of 51st Avenue.

Note: While the city of Phoenix’s long-range transportation plan identifies the planned extension of 43rd, 51st and 67th Avenue/Pyramid Peak Parkway south of Loop 303 based on future development, the city has no immediate plans to extend these roadways