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John C. Walton, PE, cont’d. Resume
<br />Maser Consulting
<br />Hog Island Road
<br />Tinicum Township, Delaware County, PA
<br />Responsible for developing a geotechnical instrumentation program to monitor the surcharge loading of the existing
<br />service road prior to constructing new pavement. His associated obligations included direction and administration
<br />of vibrating wire piezometer installation and monitoring and real-time analysis of piezometer and settlement plate
<br />instrumentation data. He provided construction consultation with regard to settlement rates and impacts on the
<br />construction schedule based on interpretation of the data. Mr. Walton was also responsible for developing and
<br />managing a pile load testing program for a new bridge constructed over an environmentally sensitive wetland. Other
<br />duties associated with the bridge construction involved providing consultation during pile installation program
<br />including review of PDA results to verify installed capacity of driven pipe piles.
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<br />Relocation of WV Route 10
<br />Man to Rita Towns, Logan County, WV
<br />This $80 million project included several miles of limited access highway on new alignment and two major river
<br />crossings of more than 1,800 ft. each. As a geotechnical engineer on this project, Mr. Walton developed a test
<br />boring program, including layout, schedule, and direction of field work, for a 3.7-mile section of new highway to
<br />replace existing WV Route 10 between the towns of Man and Rita in Logan County, West Virginia. Design
<br />challenges included rock cut slopes over 350 feet high, embankments over 150 ft. high including reinforced soil
<br />slopes, stability of rock cut slopes, soil slopes, and rock wedge failures for 40 ft.+/- retaining structures founded on
<br />weathered rock. Additional responsibilities included design of cantilever soldier pile retaining walls and evaluation
<br />and design of foundation alternatives, utilizing AASHTO LRFD and LFD procedures, for 4 bridges on the project,
<br />one of which traverses the Guyandotte River.
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<br />Corridor H
<br />Grant County, WV
<br />Three miles of new highway construction, including two bridges, 300+ ft. high rock cut-slopes, and 100+ foot high
<br />fill embankments. Responsible for developing and directing subsurface program consisting of more than 200
<br />borings to depths of up to 200 feet, performing rock cut and fill slope design and stability analyses, and design of
<br />deep foundation systems, reinforced soil slopes, and MSE, cantilevered, and anchored retaining walls.
<br />
<br />Route 58 Widening
<br />Washington County, VA
<br />For this 3 mile+/- section of route 58, which was increased from two to four lanes, Mr. Walton was responsible for
<br />performing a value engineering study on various soil retention structures from a feasibility perspective, addressing
<br />key issues such as cost, constructability, and maintenance. Additional duties as a geotechnical engineer on this
<br />project included design of roadway undercut and soil stabilization programs utilizing geotextiles, as well as and
<br />slope stability analyses for rock cut slopes and embankments to be constructed for widening of the existing roadway.
<br />
<br />Route 9 Section 15-D
<br />Smithville, Galloway Township, Atlantic County, NJ
<br />Replacement of the existing bridge, including the construction of a 30+ foot high MSE wall embankment over soft
<br />bay silts. Responsibilities included directing the field work associated with installation of geotechnical
<br />instrumentation, including vibrating wire piezometers, inclinometers, magnetic probe extensometers, conventional
<br />monitoring wells, and geotextile strain gauges. Additional responsibilities included performing initial calibration of
<br />instruments, and training client representatives to maintain the instruments, obtain readings, and evaluate the
<br />acquired data.
<br />
<br />Lock Avenue Bridge Replacement
<br />Swedesboro, NJ
<br />Replacement of the existing bridge and widening of the approach embankments. His responsibilities for this project
<br />included the design of a geotechnical instrumentation program for surcharge loading of the embankment which
<br />overlies soft marsh land, including the use of vibrating wire piezometers, inclinometers, and vertical settlement
<br />platforms. Duties included Direction of the field work for the instrument installation, conducting training sessions to
<br />educate client representatives on taking readings of instruments, and providing consultation for instrumentation
<br />monitoring, including evaluation of instrumentation data during excessive vertical and lateral displacements.
<br />Section F, Page 29
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