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Arizona State Route 303

State Loop 303 marker

State Loop 303
Bob Stump Memorial Parkway
Route information
Maintained by ADOT
Length: 35.25 mi (56.73 km)
Existed: 1991 – present
History: Under construction until after 2023
Major junctions
Beltway around West Valley
CCW end: I-10 in Goodyear
  Northern Parkway in Waddell
US 60 in Surprise
CW end: I-17 in Phoenix
Highway system
SR 289 SR 347

State Loop 303 marker

Arizona State Route 303, also known as Loop 303 (spoken as three-oh-three) or Bob Stump Memorial Parkway formerly called Estrella Freeway, is a freeway that serves the northwestern portion of the Phoenix area. The freeway, originally a two-lane rural highway, was maintained by Maricopa County in central Arizona serving the far western suburbs of the Phoenix metropolitan area until 2004 when the Arizona Department of Transportation again took the control of upgrading the interim road to a freeway. As of 2004 it was renamed "Bob Stump Memorial Parkway" to honor former Arizona congressman Bob Stump.

Its route runs from Interstate 10 in Goodyear to Interstate 17 south of Carefree Highway. Loop 303 is a full freeway from I-17 to I-10.

Loop 303 currently begins at a stack interchange with I-10 in Goodyear as a six-lane freeway. It heads north under McDowell and Thomas Roads, then over an interchange with Indian School Road. The road heads through a farmland terrain and passes the Wildlife World Zoo near Northern Avenue. It over passes the BNSF Railway near Olive Avenue. At an interchange with Greenway Road, Route 303 enters a residential community and turns northeast, becoming a two lane highway past Clearview Boulevard. The route heads over a bridge above Grand Avenue (US 60) along with another BNSF railroad line. The route turns eastward and was recently upgraded to a six-lane freeway. It turns north near the Happy Valley Parkway interchange and then east again south of Lake Pleasant, passing through planned arterial interchanges. The freeway comes to an end at a temporary at-grade interchange (eventually to be a stack interchange with I-17 near Skunk Creek. East of this interchange, Route 303 becomes Sonoran Desert Drive. The south end from US 60 to I-10 is frequently used to bypass Grand Avenue.


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Wikipedia

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