PA 402 proceeds north along Resica Falls Road, leaving the village of Marshalls Creek after crossing the namesake tributary.

Passing the Country Club of the Poconos, the route turns northward through a residential area surrounded by woods.

This soon recedes to just woods, soon crossing over the Bush Kill, right next to Resica Falls, which drop less than a 0.25-mile (0.40 km) from the roadway.

[2] The route winds northward through woods in Porter Township for several miles, passing a small parking lot and a junction with Old Bushkill Road.

The route crosses into Blooming Grove Township, continuing northwest through the rural portions of Pike County.

[2] The route soon bends north, passing through woods east of Lake Scott, soon reaching an interchange with I-84 (exit 30; formerly 8[3]).

The route winds northward through Blooming Grove Township, passing White Deer Lake Access, soon bending northwest again.

[8] By 1961, PA 402 was realigned to use River Road between an interchange with I-80 and US 611 in Delaware Water Gap and north of the Brodhead Creek.

[10][11] A bypass of the southern terminus of PA 402 was proposed in 1991 to deter traffic off the congested intersection with US 209 and US 209 Bus.

The same year, the Pennsylvania Department of Transportation (PennDOT) got involved in the feasibility study, and preliminary engineering work was finished in 1995.

In 2000, after a Final Environmental Impact Statement had been completed, the route was approved by the Federal Highway Administration.

In 2004, a delay was created again, when pyrite was found in the area, which led to engineers finding a way to not harm the fish in Marshalls Creek.

Locals, some of whom who had been in the area for decades, started comparing the bypass shutdown as another version of the Tocks Island Dam project from 1956–1992, which led to numerous demonstrations to protect the Delaware River.

[15] Construction on the US 209 bypass was slated for Spring 2010, with a 2.5 year span of completion at the cost of $20 million (2009 USD).