The following highways are numbered 510:
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The following highways are numbered 510:
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Interstate 510 
Interstate 510 (Arizona) (cancelled proposal)
Florida State Road 510 
Maryland Route 510 
County Route 510 (New Jersey) 
Ohio State Route 510 
Washington State Route 510 | Preceded by 509 | Lists of highways 510 | Succeeded by 511 |
Arizona State Route 51 (SR 51), also known as the Piestewa Freeway, is a numbered state highway in Phoenix, Arizona. It connects Interstate 10 and Loop 202 just outside Downtown Phoenix with Loop 101 on the north side of Phoenix, making it one of the area's major freeways. It is a largely north–south route and is known for traversing the Piestewa Peak Recreation Area. The peak was named after Lori Piestewa, the first Native American woman to die in combat in the U.S. military. Prior to this time, the freeway was known as the Squaw Peak Parkway, a name considered offensive by Native Americans. Rapid growth and increased traffic demand on the east side of Metro Phoenix made the Piestewa Freeway necessary.
Interstate 510 (I-510) is a short spur route of I-10 within eastern New Orleans, Louisiana, United States. It runs south from I-10, intersects with U.S. Route 90, and ends at the Almonaster Boulevard interchange, near the NASA Michoud Assembly Facility. From this point, the highway continues south over the Gulf Intracoastal Waterway / Mississippi River Gulf Outlet on the Green Bridge.
Louisiana Highway 47 (LA 47) is a state highway located in southeastern Louisiana. It runs 15.91 miles (25.60 km) in a general southeast to northwest direction from the Mississippi River levee in Chalmette to the intersection of Hayne Boulevard and Downman Road in New Orleans.
