25G - ENGINEERING SRVS GRADE SEPARATION

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,o~ Dr. Mohan Char has many years of experience working with Caltrans, local agen- Structures Lead cies, and land developers, and developing contract documents for bridge plans, 'i'~ II' 'ii ~~~II i~~ specifications, and construction cost estimates (PS&E) projects. He is specialized III ~ i in seismic nonlinear time-history and nonlinear time dependent creep/shrinkage PhD/1993/Structural Engineering analyses. He has an intimate knowledge of the Caltrans procedures for develop- BE/1986/Civil Engineering ment ofproject-specific standard special provisions. He has been involved in sev- ME/1988/Structural Engineering eral challenging structural projects for interchanges, grade separations, freeway PE/1998/California, No: 57894 overcrossings and undercrossings, railroad overheads and underpasses, majortoll bridges, and bridge widenings. ~ i, i ~ ~ i~ ~ Project manager. AECOM was retained to provide preliminary and final engineering design and construction management for the Monte Vista grade separation over the UPRR. AECOM was selected based on its in-depth understanding of grade separation design and construction management gained from the completion of numerous complex projects, including similar significant projects on the Alameda Corridor such as the Redondo Junction and Pacific Coast Highway grade separationslll °°~°~w ~~w ~ ' I °°Structural iii task manager. Mohan Char is responsible for responsible for developing PS&E for structural portions of this project which included a number of MSE walls. The Auto Center Drive overhead is athree-span cast-in-place concrete box superstructure that carries four vehicular traffic lanes and a median over the BNSF ROW. The bridge has a high skew and design features have adapted to the many utility lines present in the area. The structure is a 353-ft long, 76-ft wide CIP/PS box girder bridge supported on high cantilever seat type abutments and drilled shaft bents. II ~1~~~~ ~ ~ ~ ~~liia~: Structural task manager responsible for developing plans, specifications and estimates for structural portions of this project which included a number of MSE walls. The structure is atwo-span, 296 foot long, 62 foot wide cast-in-place/prestressed box girder bridge supported on high cantilever seat type abutments and athree- columnbent. ~~~~m~~~~ ~ ~ u ~ . Submittals/RFI engineer. Grade separation at the UPRR and Metrolink crossings of Ramona Boulevard. Ramona Boulevard was lowered to cross under the two existing tracks, as well as to accommodate the construction of a future third track. The project consists of the construction of two railroad bridge structures and a substructure for a future bridge to the north. Also, a temporary shoofly track for both Metrolink and UPRR, a pump station and various retaining walls, a water line and several storm drain lines. .Structural task manager. The project straddles the City of San Bernardino and the County of San Bernardino border. University Parkway changes its name to State Street at the city/county boundary. The City of San Bernardino was the lead agency with regards to environmental work. University Parkway/ State Street runs north/south. Immediately south of the railroad, University Parkway/State Street is intersected by Cajon Boulevard, running southeast to northwest, parallel to the railroad. I I i ~ I I Bridge engineer. Civil engineering design for bridge type selection, preliminary engineering design, utility design and relocation, channel hydraulic modeling and studies, final design, and preparation of the construction documents (plans, specifications and estimates) for the Compton Creek bridge, which also included a parallel utility bridge. a . i , II II ~ ~ II x „N~~~ ~~~~~~~W ~ ~ ~ ~ III II I I ~ir~ ~ ~ .