Loop 303 from Interstate 10 to Proposed State Route 30

The environmental study began in 2005 and was put on hold in 2007 because of economic conditions.  In 2013, ADOT and the Federal Highway Administration reinitiated the study of Loop 303 south of Van Buren Street to SR 30. Construction of Loop 303 south of Interstate 10 to Van Buren Street was completed in October 2017. The Environmental Assessment for the section of Loop 303 from Van Buren Street to MC 85 received a Finding of No Significant Impact in November 2018. View the Final Environmental Assessment and Design Concept Report.

Loop 303 has been planned to accommodate an ultimate configuration of four general-purpose lanes and one high-occupancy vehicle (HOV) lane in each direction. There is no date set for Loop 303 south of I-10 to be designed and constructed to its ultimate configuration.

Need more information?
Telephone: Call the ADOT Project Information Line at 855.712.8530
Online: Submit a question or comment online (select Projects from the drop-down menu)
Mail: ADOT Communications
1655 W. Jackson Street MD 126F
Phoenix, AZ 85007

Maps 

Alternative 2C South

Study Map

Documents - Loop 303 from I-10 to Proposed SR 30

• Final Approved Design Concept Report 2018
• Final EA FONSI
• Appendices
  • Appendix A - Alternatives Evaluation Matrix
  • Appendix B - Programmatic Agreement
  • Appendix C - Air Quality Report
  • Appendix D - Noise Analysis Technical Report
  • Appendix E - Biological Review and Update
  • Appendix F - NRCS CPA 106 Form
  • Appendix G - Public Involvement Summary
• Air Quality Technical Study (September 2018)

Videos

Virtual Tour

Flyover and Drive-through Videos