The Miami-Dade County commissioners discuss on Wednesday the future of the 836 extension proposal. It’s a hotly debated topic, as traffic issues tend to be in South Florida. The Miami-Dade Expressway Authority (MDX), the organization behind the construction of the extension, argue it's necessary for alleviating congestion on major roadways from Kendall to Miami. But environmental groups are raising concerns that the freeway runs too close to the Urban Boundary Development line, established a few