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JMA leveraged its teams extensive track design experience to solve complex problems for the at-grade segment replacements consisting of 18,000+ feet for A-Line, 7,000 feet for R-Line and 7000+ feet for C-Line, which together are one of the largest grouping of project that BART has released under Measure RR. In addition to completing over a dozen field investigation, JMA has also completed the Issued For Construction designs for all three projects and is handling the construction support of the segments currently in construction.