Pennsylvania Route 343 highway remained intact for another seven years, and in 1970, PA 343 was realigned for the final time, this time onto its current alignment. The northern terminus is now at a partial interchange with I-78. Pennsylvania Route 343 Pennsylvania Route 343 (PA 343) is an route between Lebanon and Fredericksburg in Lebanon County, Pennsylvania. It begins at PA 72 and ends at Exit 6 of Interstate 78 (I-78). PA 343 heads mostly through urbanized areas near Lebanon before continuing into rural areas further north. There is a concurrency with U.S. Route 22 (US 22) near the northern terminus. PA 343
Maryland Route 343 Highway in December 1935, MD 343's eastern terminus was changed to the intersection of Sunburst Highway and Maryland Avenue. Dorchester Avenue was redesignated MD 744 by 1950. By 1956, MD 343 was removed from downtown Cambridge and replaced MD 551 from High Street to its new eastern terminus at MD 16 at the corner of Washington and Race Streets. The drawbridge over Cambridge Creek remained under state maintenance and is today designated MD 795. Finally, MD 343 was extended east along Washington Street to its present eastern terminus at US 50 when MD 16 was moved to a new bypass