Interstate 579

Interstate 579 is a north-south interstate highway spur route and is the shortest designated Interstate, at just over a quarter-mile in length. It lies entirely within Pittsburgh, Pennsylvania.

The northern terminus of I-579 is at Interstate 279 on the Veterans Bridge, while the southern terminus splits into the Liberty Bridge and Boulevard of the Allies, which continues to eastbound Interstate 376. The intersection of I-579 and I-279 is in one direction only; northbound traffic on I-579 can proceed only northbound on I-279, while only southbound traffic on I-279 can exit onto I-579.

I-579 allows Liberty Bridge traffic easy access to I-279, and I-279 southbound traffic easier access to Mellon Arena, downtown, and eastern regions of the city, while I-279 southbound continues to Heinz Field, PNC Park, and Pittsburgh International Airport.