Skip to main content

The South Mountain Freeway corridor of Arizona Loop 202


The South Mountain Freeway is a twenty-two-mile segment of Arizona Loop 202. The South Mountain Freeway begins at Interstate 10 in Ahwatukee Foothllls and loops back to it near 59th Avenue west of downtown Phoenix in the neighborhood of Estrella Village. The South Mountain Freeway opened to traffic during December 2019 as the newest segment of Arizona Loop 202. The South Mountain Freeway was officially designated the Congressman Ed Pastor Freeway during October 2019. The South Mountain Freeway name references the signature mountain of the same name south of downtown Phoenix. The South Mountain Freeway corridor functionally acts as a bypass of downtown Phoenix.




Part 1; the history of the South Mountain Freeway corridor

Conceptually what is now the South Mountain Freeway was first proposed as "Southern Loop Highway" in 1983.  The Southern Loop Highway was approved by Maricopa County voters by way of Proposition 300 in 1985.  The Maricopa Association of Governments in 1988 initially proposed the South Mountain Loop Highway following the general corridor of 55th Avenue south from Interstate 10 and turning east along Pecos Road.  

During 2001 a Federal Study required the Arizona Department of Transportation to examine the planned alignment of the Southern Loop Highway.   The study was deferred to a third party known as the "Citizen's Advisory Team."  A study was released by the group in April 2006 which recommended the Southern Loop Highway connect to the western terminus of the Arizona Loop 101 in Tolleson.  The group rejected the Pecos Road alignment in favor of pushing the Southern Loop Highway south into the Gila River Reservation.  During August 2006 the Arizona Department of Transportation rejected the Citizen's Advisory Team suggestions in favor of an alignment following 59th Avenue and Pecos Road.

During February 2012 the Gila River Reservation held a non-binding referendum favoring a "no build" option regarding South Mountain Freeway.  The Gila River Reservation attempted to hold another referendum which would have only a build on Gila River land option or no-build option.  This measure was made out of concerns that the South Mountain Freeway would not have any exits onto the Gila River Reservation.  This new referendum was rejected by the Gila River Reservation government during July 2013

During March 2015 despite continued objections the Federal Highway Administration issued a Record of Decision regarding the South Mountain Freeway.  The Federal Highway Administration approved the preferred South Mountain Freeway alignment and favored building the corridor.   During August 2015 the first houses in Ahwatukee Foothills along the path of the South Mountain Freeway began to be demolished.  During February 2016 the Arizona Department of Transportation awarded contracts to construct the South Mountain Freeway.  

On October 24, 2019, the South Mountain Freeway was officially designated as the "Congressman Ed Pastor Freeway."  The South Mountain Freeway would open as an extension of Arizona Loop 202 on December 21, 2019.  The finalization of construction on the South Mountain Freeway came during October 2020.  



Part 2; a drive on the South Mountain Freeway segment of Arizona Loop 202

Westbound Arizona Loop 202 in the city of Chandler transitions from the Santan Freeway onto the South Mountain Freeway at Interstate 10.  Interstate 10 serves as the boundary for the city limit of Phoenix and the neighborhood of Ahwatukee Foothills.






Arizona Loop 202 westbound Exit 56 accesses 40th Street. 




Westbound Arizona Loop 202 Exit 57 accesses 32nd Street. 




Westbound Arizona Loop 202 Exit 58 accesses 24th Street.


Westbound Arizona Loop 202 Exit 60 accesses Desert Foothills Parkway.




Westbound Arizona Loop 202 Exit 62 accesses 17th Avenue.  




Arizona Loop 202 turns north at the edge of Ahwatukee Foothills and enters an excavated pass on South Mountain.  At Exit 66 the Gila River Resorts & Casino Vee Quiva facility can be accessed.  












Northbound Arizona Loop 202 Exit 68 accesses Estrella Drive. 




Northbound Arizona Loop 202 Exit 69 accesses Elliot Road. 



Northbound Arizona Loop 202 Exit 70 accesses Dobbins Road.


Northbound Arizona Loop 202 Exit 71 accesses Baseline Road. 


Northbound Arizona Loop 202 Exit accesses Southern Avenue.


Northbound Arizona Loop 202 crosses the Salt River and accesses Broadway Road at Exit 73.  



Northbound Arizona Loop 202 Exit 74 accesses Lower Buckeye Road.  


Northbound Arizona Loop 202 Exit 76 accesses Buckeye Road whereas Exit 77 accesses Van Buren Street.  Arizona Loop 202 terminates at Interstate 10 which is accessible by way of Exit 78A and 78B. 









Part 3; the South Mountain Freeway from the air

The photo below was taken from an airplane approaching Sky Harbor International Airport.  The view depicts the South Mountain Freeway facing southward over the Salt River towards the Estrella Mountains.  

Comments

Popular posts from this blog

Did Caltrans just kill the G26 cutout US Route shields?

The US Route System was formally created by the American Association of State Highway Officials during November 1926.  Through the history of the system the only state to which has elected to maintain cutout US Route shields has been California.  The G26 series cutout US Route shields have become a favorite in the road enthusiast hobby and are generally considered to be much more visually pleasing than the standard Federal Highway Administration variant.  However, the G26 shield series appears to have been killed off on January 18, 2026, when Caltrans updated their Manual of Uniform Traffic Control Devices.  This blog will examine the history of the US Route shield specifications in California and what is happening with the 2026 changes.  The blog cover photo is facing towards the terminus of California State Route 136 and at a G26-2 specification US Route 395 shield.  In the background Mount Whitney can be seen in the Sierra Nevada range.   ...

May 2023 Ontario Trip (Part 3 of 3)

  Over the years, I have made plenty of trips to Ontario, crisscrossing the southern, central and eastern parts of the province. Living in Upstate New York, it's pretty easy to visit our neighbor to the north, or is that our neighbor to the west? Ottawa is one of my favorite cities to visit anywhere in the world, plus I've discovered the charm of Kingston, the waterfalls of Hamilton (which is on the same Niagara Escarpment that brings us Niagara Falls), the sheer beauty of the Bruce Peninsula, and more. But I hadn't explored much of Cottage Country. So I decided to change that, and what better time to go than over Memorial Day weekend, when the daylight is long and I have an extra day to explore. On the third and final day of my trip, I started in Huntsville and made my way through Muskoka District and Haliburton County, passing by many lakes along the way. I stopped in towns such as Dorset, Haliburton and Bancroft before making a beeline down to Belleville and then over th...

Ghost Town Tuesday; Nichols, FL

A couple years ago I spent a lot of spare time exploring phosphate mining ghost towns in the Bone Valley of Polk County, Florida.  One ghost town in particular called Nichols on Polk County Route 676 west of Mulberry caught my eye due to a relative lack of documentation on ghosttowns.com. Nichols was created in 1905 during the early phosphate mining boom in the Bone Valley region.  For the time Nichols was unusual since it had company housing in the Nichols Mine site and private residences outside the gate.  Nichols is only about two miles west of Mulberry which probably made it a somewhat reasonable commute even by the wonky standards of the early 20th Century.  Most of the Bone Valley region was relatively remote which made commuting or homesteading impractical which is why there are so many ghost towns in the area.  The company housing section of Nichols was phased out and abandoned by 1950. The Nichols town site is largely abandoned and could "possibl...