Loop 303, Lake Pleasant Parkway to I-17 Improvements

Loop 303, Lake Pleasant Parkway to I-17 Improvements

Contents

Overview

The Arizona Department of Transportation, in coordination with the Maricopa Association of Governments and the cities of Phoenix and Peoria, is planning for improvements to Loop 303 between Lake Pleasant Parkway and Interstate 17 that will include an additional general purpose lane in each direction, bridges to accommodate a future interchange at 67th Avenue, and a new Loop 303/I-17 system-to-system interchange. The project seeks to address growing traffic demands on Loop 303.

L303 Lake Pleasant TI Map

Project Elements

Following the update to the 2006 Final Design Concept Report Estrella Freeway (Loop 303), Happy Valley Road to I-17 (Final DCR), this project entered the design phase for the remaining planned improvements of Loop 303 between Lake Pleasant Pkwy and I-17, as described in the Final DCR. Currently the segment of Loop 303 from Lake Pleasant Parkway to I-17 provides two lanes in each direction of travel. The project is designing an expansion of Loop 303 that will include the addition of a third general-purpose lane in each direction, bridges to accommodate a future traffic interchange at 67th Avenue and direct-connect ramps at the I-17/Loop 303 system interchange.

Schedule

  • Construction of the 51st and 43rd Avenue traffic interchanges began in September 2022 and was completed in September 2023.
  • The general-purpose lane widening and other improvements on Loop 303 between Lake Pleasant Parkway and I-17 began design in 2023. 
  • Construction of the Loop 303 widening improvements has not been scheduled at this time.

Documents

 

51st and 43rd avenues Traffic Interchanges - Loop 303, Lake Pleasant Parkway to I-17 Improvements

 

Project Overview

In September 2022, the Arizona Department of Transportation, in coordination with the Maricopa Association of Governments, the Federal Highway Administration and the city of Phoenix, began construction on new Loop 303 traffic interchanges at 51st and 43rd avenues. The new interchanges will address expected traffic growth prompted by current and planned development in the area. The interchanges were completed and opened in September 2023.

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 any of these roadways.

Loop 303 Lake Pleasant Parkway to I-17 Project Map

Public Meeting

Virtual Public Meeting Information

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.

Traffic Alerts

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No work is scheduled at this time.

 

 

Stay Informed

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Submit questions and comments or request information in any of the following ways:

  • Phone: ADOT Project Information Line: 855.712.8530
  • Email: [email protected]
  • Mail: ADOT Communications, 1655 W. Jackson St., MD 126F, Phoenix, AZ 85007