36 Pa. Stat. § 2391.8
For the purpose of constructing limited access highways, local service highways, or intersection streets or roads, the Secretary of Highways is hereby empowered to take property and pay damages therefor as herein provided. In townships such property shall be taken and damages paid therefor in the same manner as now or hereafter provided by law for the relocation or widening of State highways in townships. In boroughs and cities such property shall be taken and damages paid therefor in the same manner as now or hereafter provided by law for the relocation or widening of State highways in boroughs. The owner or owners of private property affected by the construction or designation of a limited access highway or local service highway or by a change of the width or lines of any intersecting streets or roads shall be entitled only to damages arising from an actual taking of property. The Commonwealth shall not be liable for consequential damages where no property is taken: Provided, however, That the Secretary of Highways shall have authority to enter into agreements for the sharing of the cost of property damages with the officials of any political subdivision of the Commonwealth, which assumes such responsibility by proper resolution or ordinance. The taking of private property and the payment of damages therefor by the authorities of any political subdivision of the Commonwealth shall be in the same manner as now or hereafter provided by law for the relocation or widening of highways by the political subdivision in which such highway is located.
36 P.S. § 2391.8