Pennsylvania Route 343 community of Bordnersville soon after. The highway was then extended along the local continuation to end at US 22 in Harper Tavern. In 1963, PA 343 was moved back to Lickdale, and seven years after, moved to its northern terminus, thirteen years after the construction of I-78. PA 343 begins at an intersection with PA 72, near the Northwest Elementary School, in the city of Lebanon in Lebanon County. PA 343 heads eastward along Maple Street, a two-lane undivided street maintained by the city, past urbanized homes and businesses. The route turns north onto North 7th Street and passes more
Maryland Route 343 Street to Race Street, where it ended at MD 16. Finally, MD 343 was extended to its present terminus when MD 16 bypassed Cambridge in the late 1960s. MD 343 begins where state maintenance commences on Hudson Road a short distance west of Cook Point Road near the hamlet of Hudson. The state highway heads east through a mix of farmland and forest, collecting roads that serve the peninsulas split by creeks that flow into the Choptank River to the north and the Little Choptank River to the south. MD 343 also passes through the hamlets of Cornersville and Lloyds.