I-190 and NY 324 follow parallel routings across Grand Island, with both roads passing on opposite sides of Fantasy Island, a local amusement park, near the center of the island. At the northern edge of the island, NY 324, as signed, terminates at exit 20; however, officially, NY 324 rejoins I-190 across the Niagara River once again via the North Grand Island Bridge. Now in Niagara Falls, Niagara County, NY 324 ends at a complex interchange featuring NY 384, the Niagara Scenic Parkway, and the LaSalle Expressway on the eastern bank of the river. Farther north, I-190 meets U.S. Route 62 (US 62) at exit 22 and NY 182 at exit 23.