sentences:  North of downtown Cortland, I-81 makes a 90-degree turn to the north, matching a similar curve in the course of the nearby river.This track brings the freeway to the suburban village of Homer, which I-81 connects to via exit 12.The trumpet interchange feeds into a long east–west ramp linking the highway to the parallel US 11, NY 41 and NY 281, another parallel road farther west.