NCM is responsible for development of final design and PS&E to grade separate Monte Vista Avenue in the City of Montclair from the UPRR main line and State Street. The project will construct a two span overhead structure to carry Monte Avenue over the railroad and State Street and improve safety by eliminating vehicle and train conflict. A spliced precast concrete girder structure is being utilized to avoid the use of falsework and minimize ground-level construction within the busy UPRR three track corridor.
The project originally consisted of a 3-span structure to carry Monte Vista Avenue over State Street and the UPRR and was slated for construction but was put on hold due to the loss of Redevelopment Agency (RDA) funds. During the delay, UPRR updated future track and right of way use plans which made the use of a 3-span structure infeasible. As new funding became available, NCM principals assisted the City with development of a strategy and supported the City’s efforts to procure federal funding through Caltrans/SANBAG. Project responsibilities and features include the following:
• Project management and oversight of an aggressive schedule to complete PS&E
• Civil, roadway and structures design and development of PS&E
• Utility conflict identification and relocation coordination
• Design of a spliced girder bridge system that avoids the use of falsework, minimizes work at grade within the railroad right of way and avoids impacts to railroad operations
• Design of short seat abutment/MSE wall systems that significantly reduce construction cost compared to other abutment/fill methods