Interstate 590 forms part of the Rochester Outer Loop in Monroe County, New York. The commuter route arcs northeast through the town of Brighton from I-390 (Genesee Expressway) to the Can of Worms Interchange with I-490 along the Rochester city line. New York State Route 590 extends north from the exchange joining I-490/590 along a freeway to NY 104 and Sea Breeze Drive in the town of Irondequoit.
The west leg of the Rochester Outer Loop at Gates and the east leg through Brighton were originally designated as New York Route 47. Interstate 390 was proposed northward from Henrietta and Brighton along the Genesee Expressway to I-490 and the Inner Loop at Downtown. Interstate 590 was approved by the American Association of State Highway and Transportation Officials (AASHTO) on November 10, 1973 from I-490 by Gates Center to I-490 in southeast Rochester.
The Genesee Expressway was canceled north of the Outer Loop due to both high costs and community opposition. This resulted in the replacing I-590 with a northern extension of I-390 over the western half of the Outer Loop. The switch was approved at the AASHTO meeting on June 25, 1979, but subject to Federal Highway Administration (FHWA) concurrence. The redesignation also included extensions of both I-390 north to Lake Ontario State Parkway and I-590 north to NY 104. However both expressways north of I-490 were never signed as Interstates and instead posted as NY 390 and NY 590 respectively.