09 May 2014 ~ 2 Comments

Construction Update | May 10 – May. 19

Chinatown Construction Update North Beach Project Overview SoMa Union Square Utility Relocation
At the intersection of Ellis and Stockton, the tunneling contractor has restored this work zone and handed it over to the station contractor.

At the intersection of Ellis and Stockton, the tunneling contractor has restored this work zone and handed it over to the station contractor.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This section contains brief updates about what is happening in each neighborhood. For more detailed information, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry): Potholing for utilities will continue next week on 4th Street between Bryant and King. A temporary walkway is in place around the construction zone. At the tunnel launch box on 4th Street between Harrison and Bryant, tunneling continues with both TBMs. Three lanes of the I-80 off-ramp at 4th and Bryant may be closed Tuesday and Wednesday from 12 a.m. to 5 a.m. One lane of the I-80 off-ramp at 4th and Bryant may be closed Monday from 10 a.m. to 3 p.m.

Northern SoMa (Market to Harrison): At 4th and Folsom, work to prepare for the Yerba Buena/Moscone Station continues. This will include demolishing the roadway within the construction zone to prepare to construct underground station walls at 4th and Folsom at night. At 4th and Jessie, crews are potholing for utilities and will be installing a manhole in the next few weeks.

Union Square: Stockton Street between Ellis and Geary is closed to vehicular traffic and partial closure to vehicular traffic between Geary to Post to allow for construction of the Union Square/Market Street Station. Work is underway to excavate material before constructing station walls. Construction hours will be Monday to Friday from 7 a.m. to 11 p.m.

Chinatown:  The contractor has started station wall construction within the future station site and on the adjacent section of Washington Street.

North Beach: Work will continue at 1455 Stockton and 1731-1741 Powell. Sewer, roadway and sidewalk restoration on Columbus and Union will continue and is expected to be completed by the 3nd quarter of 2014.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

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  • Birdie

    Noise levels: The generators at the construction site on 420 4th Street have been running 24/7 for the past few months. The noise levels at this site average at 95dB throughout the day and night.

    According to CDC – NIOSH, exposure to noise levels over 85dB for continued periods of time may cause hearing loss. At 95dB, that exposure needs to be as little as 45 minutes. (http://www.cdc.gov/niosh/docs/98-126/pdfs/98-126.pdf Table 1-1)

    By the Occupational Safety Act of 1970 (Public Law 91-596), the employer is liable for any hearing loss that result from noise levels that exceed these recommended levels.

    If you’re living in the 94107 zip code, and develop hearing loss within the next five years, these noise levels may well be the cause.

    • Islam El-Ashi

      I second my concern regarding noise levels. The generators are very loud and are causing me sleeping problems. How long are they expected to continue?