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Justin L. Staker, PE (MN) <br />Senior Engineer <br />Education <br />Bachelor of Science in Civil Engineering <br />University of Minnesota Duluth <br />Professional Registrations <br />Professional Engineer, Minnesota No. <br />55534 <br />MnDOT Technical Certifications, No. <br />21187 (Aggregate Production, <br />Bituminous Street, Grading & Base I/II) <br />Contact <br />jstaker@teamAET.com <br />Office' 651-659-9001 <br />Justin has 11 years of experience in geotechnical and pavement <br />engineering and construction materials testing and observations, <br />including significant experience with construction and soils related <br />issues during construction. His project type experience ranges from <br />pavements, buildings, utility infrastructure, retaining walls, and bridges <br />throughout the public and private sectors. His recent focus has been <br />geotechnical and pavement engineering for city and county <br />transportation projects throughout the Twin Cities and surrounding <br />area. <br />Relevant Project Experience <br />Rice Street Capitol Area Reconstruction, St. Paul, MN 2025-Present <br />Lead geotechnical engineer for the reconstruction of Rice St (CSAH <br />49) from John Ireland Blvd to Pennsylvania Ave near the state capitol. <br />The project includes bituminous pavement, traffic signals, concrete <br />sidewalk, multiuse trail, storm sewer, watermain and sanitary services, <br />and stormwater treatment/infiltration basins. This corridor is part of <br />the future G Line BRT route. <br />TH 36 and CSAH 17, Lake Elmo & Grant, MN <br />2024-Present <br />Project manager and geotechnical engineer for materials design <br />recommendations (MDR), including grading and surfacing for roadway <br />reconstruction and new infiltration basins. Authored foundation <br />analysis and design recommendations (FADR) for two proposed <br />bridges with spread foundations, replacing an at -grade signalized <br />intersection. Also prepared FADRs for traffic signals, high-tension <br />cable barriers, and retaining walls. Field scope included 119 SPT <br />borings, 18 SCPTu soundings, and 2 piezometers. <br />Opus Bridges Phases 1 and 2, Minnetonka, MN 2021-2023 <br />Project manager for Quality Assurance (QA) testing. Oversaw <br />MnDOT-certified testers to ensure compliance with MnDOT State Aid <br />standards. Projects involved replacing six bridges with Geosynthetic <br />Reinforced Soil (GRS) abutments and cast -in -place concrete decks <br />and barrier walls. AET's responsibilities included compaction, <br />gradation, direct shear, concrete, and bituminous testing, as well as <br />final reporting. <br />CSAH 5 Improvements, Stillwater, MN 2023 <br />Lead geotechnical engineer for pavement rehabilitation of a four -lane <br />divided roadway. Exploration included of ground penetrating radar <br />(GPR), falling weight deflectometer (FWD), SPT borings, pavement <br />coring, and lab testing. Recommendations included mill and overlay <br />designs, bituminous trail sections, and loop detector depths using GPR <br />to aid county planning. <br />February, 2026��AET <br />