Pennsylvania Route 343

Pennsylvania Route 343
Route information
Maintained by PennDOT and City of Lebanon
Length	8.159 mi[1] (13.131 km)
Existed	1928–present
Major junctions
South end	PA 72 in Lebanon
Major intersections	US 22 in Fredericksburg
North end	I-78 in Fredericksburg
Location
Country	United States
State	Pennsylvania
Counties	Lebanon
Highway system
Pennsylvania State Route System Interstate US State Scenic Legislative
← PA 342 → PA 344

Pennsylvania Route 343 (PA 343) is an 8.16-mile (13.13 km) route running from Lebanon north to 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 has had a number of different realignments, most of them relating to the northern terminus of the highway. The highway originally terminated at an intersection with PA 443 in Lickdale, moved to end in the 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.