In 1953, US 611 was realigned between Portland and Delaware Water Gap to cross the Delaware River on the Portland-Columbia Toll Bridge into New Jersey, where it continued along a new multilane road on the east bank of the Delaware River before crossing back into Pennsylvania on the Delaware Water Gap Toll Bridge. The former alignment of the route in Pennsylvania between Portland and Delaware Water Gap was designated as US 611 Alt. By 1960, the alignment of US 611 across the Delaware Water Gap Toll Bridge became part of I-80. In 1963, the Pennsylvania Highways Department recommended replacing US 611 Alt. with US 611, with the US 611 designation to be removed from I-80. On March 25, 1965, approval was given to realign US 611 to follow the alignment of US 611 Alt. as opposed to crossing the Delaware River twice and running through New Jersey; signs were to be changed by April 1 of that year. US 611 was upgraded to a divided highway between County Line Road north of Horsham and Doylestown in the 1960s. The section of US 611 between Tobyhanna and Gouldsboro was upgraded to a freeway and became part of I-81E (now I-380) in the 1960s. In addition, US 611 was rerouted to follow a section of the I-81E freeway in Dunmore to end at an interchange with I-81.