P3 Rapid Bridge Replacement Project



Statewide, PennDOT

AEG is providing Transportation, Structural, Surveying, Geotechnical, Hydrologic and Hydraulic, and Construction Inspection services for the Department’s P3 RBRP. The goal of the P3 RBRP is to replace 558 aging bridges during a three-year target period. The P3 RBRP project enables the Department to quickly construct the bridges with the use of standardized designs and ability to prefabricate many of the bridge components off-site. AEG has been involved with many disciplines that includes multiple tasks such as design reviews/submissions and construction consultation that were performed simultaneously. AEG provided services for hundreds of bridges across the Commonwealth of Pennsylvania located in PennDOT Districts 1-0, 2-0, 3-0, 5-0, 6-0, 8-0, 9-0, 10-0, 11-0, and 12-0.

Bridge design is upheld to State H&H requirements to ensure that designs meet PennDOT and DEP criteria for flood analysis and bridge design. AEG aided with the H&H development and review of 136 structures. During the H&H development portion of the project, AEG prepared or assisted in preparing more than 20 different H&H reports for bridges and culverts, performing GIS analysis and hydraulic modeling using HEC-GeoRAS software developed by the United States Army Corps of Engineers. Due to the nature of the RBRP project, a quick turnaround and dedication to timeframe deadlines was essential. AEG was also tasked with the quality check (QC) review of 116 H&H reports and interdisciplinary reviews of corresponding plans and reports.

AEG’s geotechnical responsibilities included the coordination of geotechnical design reviews and field inspections for over 60 structures. Our geotechnical department was also involved with boring preparation and inspection, Pilehammer reviews of 25 WEAP reports, and performing laboratory testing services in our AMRL-Certified Testing Laboratory. Additional services included GIS and CADD support.

AEG aided with the Survey and basemapping of 56 structures located in PennDOT Districts 3-0 and 8-0. Utility coordination was completed by AEG prior to field survey, as were deed researches for all properties within a minimum of 300 feet of the bridges. Surveying at the bridge locations included topo collection of bridge features, abutments, wingwalls, bridge openings, roadways, lanes, shoulders, edges, joints, inlets, manholes, drainage features, in-stream features including stream bottom thalweg, channel banks, and areas extending to top and toe of embankment slopes. As survey for each bridge was completed, data was processed and basemapping and DTM’s were created, holding to PennDOT DM3 level and symbology standards. Microstation was used to complete all data processing and mapping.

AEG conducted shop drawing reviews and plan checks for 301 bridge designs. Our team of professional engineers QC’ed structural plans, revising some designs as necessary. We have recently been working long and hard updating guide rail design to meet the latest criteria. Altogether, AEG has been involved with just over 400 PennDOT structures for the P3 RBRP alone.