Location: SR 315 and I-270, Worthington Old school Ohio freeway speed limit sign as the 315 freeway begins. Location: SR 315 and I-270, Worthington In 3/4 of a mile, we’ll approach 161. Location: SR 315 and Dublin-Granville Rd, Worthington Exit in a quarter mile for Ohio 161. Location: SR 315 and Dublin-Granville Rd, Worthington Exit … Continue reading Ohio State Route 315, I-270 to OH-161