I-17 101 traffic interchange

I-10 Broadway Curve Improvement Project begins phase three of four phases

I-10 Broadway Curve Improvement Project begins phase three of four phases

December 3, 2023

ADOT’s largest-ever freeway reconstruction project enters  next phase

PHOENIX - December 2023 - It’s been two and a half years since active construction work began on the Interstate 10 Broadway Curve Improvement Project. The second of four phases is now complete and the project has officially begun phase three.

During phase two, some of the construction that crews with the I-10 Broadway Curve Improvement Project completed consisted of:

  • Beginning of construction of the new Collector Distributor (CD) roads
  • Removal of the former 48th Street and Broadway Road bridges and completed construction of the new ones
  • Reconstruction of 40th Street ramps
  • Construction of the US 60 to I-10 bridge
  • Construction of the Alameda Drive and Western Canal pedestrian bridges
  • Construction of new walls
  • Coordination of utility relocations

Phase three of the project is estimated to last through late Summer 2024. During phase three crews will work on the following:

  • Completing the CD roads
  • Completing the new SR 143 and I-10 direct connections
  • Completing bridge work
  • Reconstructing the 32nd street ramps
  • Making roadway improvements 
  • Drainage and signage work
  • Widening roadway and bridges

If you would like to schedule interviews and/or live shots on this important project milestone, please email [email protected] 

To view images of the ongoing construction progress of the I-10 Broadway Curve Improvement Project, visit the Flickr album here.


The I-10 Broadway Curve Improvement Project is identified in the Maricopa Association of Governments’ Regional Transportation Plan, funded by a half-cent sales tax approved by Maricopa County voters in 2004 through Proposition 400. MAG identified the need for this project to reduce travel times on I-10 during peak hours; improve airport access; support ridesharing and transit; and prepare the region for future growth projections. Learn more about the major improvements here