Three Sisters (Pittsburgh, Pennsylvania)

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From Wikipedia:
The Three Sisters are three very similar self-anchored suspension bridges spanning the Allegheny River in Pittsburgh, Pennsylvania. Designed by the Allegheny County Department of Public Works, they were all built in a four year period, from 1924 to 1928, by the American Bridge Company, replacing earlier bridges of various designs at the same sites. Their construction was mandated by the War Department, citing navigable river clearance concerns. They are constructed of steel, and use steel eyebars in lieu of cables. They span the Allegheny at 6th, 7th, and 9th streets in downtown Pittsburgh, running generally north/south. The bridges have been given formal names to honor important Pittsburgh residents:

Roberto Clemente (Sixth Street Bridge)
Andy Warhol (Seventh Street Bridge)
Rachel Carson (Ninth Street Bridge)