 Following this, the freeway passes through more rural areas with some nearby development and reaches a westbound exit and eastbound entrance with US 22 (William Penn Highway).At this point, US 22 becomes concurrent with I-78 and the median of the freeway narrows from a grassy median to a Jersey barrier.I-78/US 22 enters Bethel Township in Berks County and heads east-northeast through agricultural areas to the south of the Blue Mountain ridge, coming to a diamond interchange with PA 645 north of the community of Frystown.