Arizona State Route 51
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| Overall length: | 16.70 mi / 26.88 km | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Opening: | 1987 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Starting point: |
 I-10 in Phoenix
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| End point: |
 AZ 101 in Phoenix
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| County: | Maricopa County | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Arizona State Highway 51 , also known as Piestewa Freeway , is a highway in the US state of Arizona in the metropolitan area of Phoenix , which runs in a north-south direction.
The highway runs from Interstate 10 to the Loop 101 ring road. He crosses the Piestewa Peak Recreation Area , where the name Piestewa Freeway comes from. In 1987 the State Route was rebuilt through Phoenix and extended by a few lanes.
The State Route was called the Squaw Peak Parkway, which referred to Native American women. On March 1, 2003, the street was renamed the Piestewa Freeway, because Lori Piestewa , the first woman of Indian descent to serve in the military, died in the Iraq war .
Arizona State Route 51 once had the lowest number of State Routes in Arizona, which is now Arizona State Route 48 . The State Route was planned as Interstate 510 but was only built as a State Route. The number 51 derives from the number of Interstate 510. Only the zero was left out.