PA 830 begins at an interchange with I-80 in Washington Township, Jefferson County, heading northwest on two-lane undivided Sensor Road.

PA 830 heads east-southeast through a mix of farmland and woodland with some homes, continuing east into more wooded areas of residential development and passing through Rockdale.

The route passes through Red Mill and turns southeast into more forested areas with some residences, crossing into the borough of Falls Creek and becoming Washington Avenue.

The route continues to the north of the railroad tracks, running through wooded areas with some commercial development as it comes to its eastern terminus at US 219.

As it approached the village of Allens Mills, the former routing of PA 310 met its northern terminus here where it ran south to I-80 at Exit 86 and came to an intersection with US 322 near Emerickville and turned southeast to form a concurrency with US 322 towards Reynoldsville.