Roadway Above Central Subway Gives Way in SoMa

A stretch of roadway above the under-construction Central Subway in San Francisco’s South of Market neighborhood gave way over the weekend, a San Francisco Municipal Transit Agency spokesman said today.

The asphalt on Fourth Street between Market and Mission streets was seen dipping at about 2 p.m. Saturday, SFMTA spokesman Paul Rose said.

Rose said the incident was unexpected and that the cause of the “void in the street,” as crews are calling it, has not yet been determined.

Rose said no damage to buildings in the area has been reported.

He said crews have filled below the road with concrete to stabilize the area and are working on repairing a water line.

According to Rose, the underground Central Subway, which will connect the South of Market neighborhood to Chinatown, has been installed beneath that section of roadway.

Rose said crews are working to determine what made the surface of the street give way and do not yet know how long the repairs will take.

Hannah Albarazi, Bay City News

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  • mx

    Remember when these liars promised us that the tunnel would be dug deep beneath the street so there would be no disruption? Compare that to the years of closed streets around Union Square and Moscone, the rats, the noise the massive flood, and now the street caving in. These people blatantly lied about the scope of the project to sell it to taxpayers, but nobody seems to care.

    • I don’t remember ever being told there would be no disruption, only that a deep bore tunnel would be less disruptive than a cut-and-cover tunnel. Where did you hear there would be no disruption?

      In the case of a cut-and-cover tunnel – which is how the Market Street Subway was built – a trench is dug in the middle of the street, but that would completely shut down roads to traffic for many years.

      Because the Central Subway was dug with tunnel boring machines, Stockton Street remained open North of Union Square during the tunnel digging.

      • sfparkripoff

        From http://www.huffingtonpost.com/2012/06/12/san-francisco-central-subway-tunnel-construction-begins_n_1587406.html

        The massive tunnel boring machines are reportedly undetectable while operating underground. “There’s no vibration, no surface disruption,” Central Subway Project Manager John Funghi told the Chronicle earlier this year. “You could be walking on top of it and not even feel it.”

        BHAH HA HA HA HA! Yea, you wont even even feel it…………Until the the surface of the street gives way and the whole friggin street collapses under you. The incompetent and corrupt MTA (money taking agency) gets caught in another lie. Lets take a minute to thank Mayor Mustache for this $1.6 Billion Dollar DEATHTRAP!

        (clap clap clap clap clap)

        • Central Subway Project Manager John Funghi told the Chronicle earlier this year. “You could be walking on top of it and not even feel it.”

          BHAH HA HA HA HA! Yea, you wont even even feel it…………Until the the surface of the street gives way and the whole friggin street collapses under you.

          Millions of pedestrians walked above the tunneling without even noticing and the most definitive evidence deep bore tunneling won’t cause the street collapse is the fact deep bore tunneling completed last year without the street collapsing.

  • sebra leaves

    Have they come up with any answers yet?