By Meg Muckenhoupt Since aggressively upzoning the Alewife area a decade ago, Cambridge has permitted hundreds of thousands of square feet of new development in the Quadrangle neighborhood adjacent to Belmont, and bordered by Fresh Pond Parkway, Fitchburg line railroad tracks—and Concord Avenue. Now, even more development could solve some long-standing transportation issues, or it could make getting out of Belmont or traveling around the entire Fresh Pond area even more difficult. Why build in the Quadrangle now? Unlike the rest of Cambridge, the Quadrangle has a history of sparse development. Originally one of the lowest-lying areas of the Mystic [READ MORE]