Pfingsten/Kates Road over Metra Tracks

Ciorba Group developed the final design engineering for the replacement of a precast prestressed concrete (PPC) deck beam bridge over the Metra tracks. After an in-depth bridge inspection t was determined that the existing superstructure and abutment cap would be removed and replaced with a 104’-6” single span PPC I-beam bridge supported by a new abutment cap on the existing piles. Due to a thicker proposed superstructure depth, the roadway vertical profile would need to be raised to meet the required 23’-0” vertical clearance over the Metra tracks. This profile raise required that the existing moment slabs and top row of MSE wall panels be removed and replaced adjacent to the bridge to accommodate new approach slabs and roadway profile. The proposed abutments were designed as semi-integral abutments to eliminate the expansion joints, reducing long term future maintenance