United States Truck Route 19 and Pennsylvania Route 51 join for two
miles through southwestern Pittsburgh in Allegheny County.

Denny Pine 2003
Northbound on Truck US 19 at the interchange with PA 51/Saw Mill
Run Boulevard. Truck US 19 turns left to join PA 51 toward I-279.
This junction was upgraded from an at-grade intersection to an interchange
in 1999.

Denny Pine 2003
The same interchnage as seen from PA 51 northbound.

Denny Pine 2003
Two miles to the north, Truck US 19/51 meets I-279/US 22/US 30 and
US 19. Truck US 19 north splits from PA 51 north here by joining I-279
south, creates a complicated
multiplex with I-279/US 19/Truck US 19 south/US 22/US 30, and
loops around back to the north. US 19
joins PA 51 here toward West End.

Denny Pine 2003
The same interchange as seen from US 19/PA 51 south. US 19 exists
PA 51, and Truck US 19 joins it straight ahead.

Denny Pine 2003
Oversized reassurance shields southbound.

Douglas Kerr 12/7/03
Southbound on Truck US 19/PA 51 approaching the southern split. Truck
US 19 soon turns south onto Liberty Avenue, while the second lane
from the right can usually be used for both PA 51 or to access the
Liberty Tunnel into downtown Pittsburgh.