26 May Mission Street Grate Replacement Traffic Control Plans (BART)
BART’s subway stations are now more than 40 years old, and the agency is in the process of replacing each of the street grates that allow for air circulation in the stations. Each underground station has two major ventilation shafts and a series of smaller maintenance shafts, each with its own street grate. W-Trans prepared traffic control plans for street grate replacements at nine locations along Mission Street (a very high traffic volume corridor). Because of the complex urban working environment, including buses, overhead electrical wires, bicyclists, pedestrians and vehicular traffic, full closure is not viable for many locations, so staged construction or time-limited activity is being employed. W-Trans also worked with BART as part of the outreach to stakeholders, including various San Francisco agencies, businesses and residents.