U.S. Route 42 (US 42) is an east–west United States highway that runs southwest–northeast for from Louisville, Kentucky to Cleveland, Ohio. The route has several names including Pearl Road from Cleveland to Medina in Northeast Ohio, Reading Road in Cincinnati, Cincinnati and Lebanon Pike in southwestern Ohio and Brownsboro Road in Louisville. Traveling northeast, the highway ends in downtown Cleveland and traveling southwest ends in Louisville. Interstate 71 (I-71) fully supplanted US 42 as an interurban highway in the early 1960s, relegating US 42 to its current role as an ordinary town-to-town surface road. Additionally, I-71 passes through Columbus, where US 42 avoids Columbus completely. It remains intact as a route; no part of it has ever been diverted to any Interstate highway. It is not the "parent" of any US route with a related number. In spite of its even number, US 42 is posted north–south in Ohio. Route description Kentucky U.S. Route 42 starts in Louisville, Kentucky, heading northeast through Prospect on the Oldham County and Jefferson County line. From here US 42 is a two lane road passing through the northern Kentucky hills paralleling between Interstate 71 and the Ohio River. Next, it passes through Goshen near North Oldham High School, situated on the north side. US 42 continues through Oldham County into Trimble County. In Bedford US 42 intersects with US 421 and is concurrent through downtown. The route still heading northeast crosses into Carroll County prior to crossing the Kentucky River and entering Carrollton. US 42 follows northeast along the south bank of the Ohio River passing Markland Lock and Dam and KY 1039 Markland Dam Bridge which connects between Kentucky Speedway and Indiana. Heading east US 42 parallels the Ohio River passing through Warsaw, Gallatin County about prior to intersecting with US 127 starting an extended concurrency. US 127 heads south toward Glencoe, Owenton, and eventually Frankfort. From the intersection with US 127, US 42 turns away from the Ohio River bank. US 42 enters Boone County about prior to intersecting with the western terminus of Kentucky Route 14 (KY 14). Continuing north US 42-127 in about intersects Beaver Road KY 338 creating a wrong-way concurrency between US 127 and KY 338: when going north, drivers are traveling east on US 42, north on US 127, and south on Kentucky 338. This continues for less than a mile until it intersects with Richwood Pike