extents of the county, the surroundings become more residential and commercial in nature. The freeway meets NY 15 and NY 251 in Rush ahead of an interchange with both the New York State Thruway (I-90) and NY 253 in southern Henrietta. Past the thruway, the transition from the rural landscapes of the Southern Tier and Finger Lakes to residential and commercial areas is completed as I-390 continues into the suburbs of Rochester and the commercial center of Henrietta. Roughly from NY 253, I-390 has an exit leading to Hylan Drive, a through street leading to The Marketplace Mall. Farther north, I-390 meets both NY 15A and NY 252 in equally commercialized areas before entering Brighton. Shortly after entering Brighton, I-390 crosses over the Erie Canal and meets the southern terminus of I-590 at a large semi-directional T interchange located adjacent to the canal and South Clinton Avenue. The latter of the two passes through the eastern half of the junction, crossing over I-590 but passing under the ramps connecting I-590 south to I-390 south and I-390 north to I-590 north. Past the exit, I-390 turns to the west, joining the Rochester Outer Loop and crossing back over the canal ahead of an interchange with NY 15 and NY 15A. After passing under NY 15, the freeway begins to run along the southern edge of the Erie Canal, here delimiting the southern city limits of Rochester. The canal and I-390 run side by side for just over to the Genesee River, where I-390 veers slightly to the west as it meets NY 383 at a partial cloverleaf interchange. For the next mile (), I-390 follows a more northwesterly alignment along the northeastern edge of the Greater Rochester International Airport grounds. It meets Brooks Avenue (NY 204) at the northern edge of the grounds before leaving the airport area and curving more to the north, matching changes in the Erie Canal's alignment as both entities proceed around the southwestern edge of the city. Now in Gates, I-390 crosses over the Rochester and Southern Railroad just south of another partial cloverleaf interchange with NY 33A. The freeway continues on, passing under the CSX Transportation-owned Rochester Subdivision and NY 33 before connecting to I-490 at a complex interchange roughly west of the canal and the Rochester city limits. I-390 ends here; however, the freeway continues northward toward Greece as NY 390. History Construction on