17 September 2015 ~ 1 Comment

Union Square | Market Street Station Update

Rendering of theunderground Union Square | Market Street station.  This station will feature a concourse that will allow T Third passengers to easily access other Muni lines and BART

Rendering of the underground Union Square | Market Street station. This station will feature a concourse that will allow T Third passengers to easily access other Muni lines and BART

There is a lot of activity as construction moves forward in Union Square.  At the corner of Geary and Stockton, a small portion of the Union Square Garage is being demolished to allow for the construction of the north entrance to the Union Square. The entrance will open to the sidewalk of Geary and Stockton.

Construction on the roof of the north concourse is ongoing.  The work is being done in sections on Stockton near Maiden Lane and Geary.  Workers have excavated soil to the roof level, installed steel beams and corrugated steel sheets, and poured concrete.

Work on the south concourse to the Union Square | Market Street station is also underway.   At the intersection of Ellis and Stockton, crews are removing soil and reconstructing the currently closed Ellis Street entrance to Powell/BART/Muni station to also accommodate the Union Square | Market Street Station.

Throughout the construction area, drilling and compensation grouting are being performed.  In compensation grouting, a concrete-like solution is injected under pressure into a pre-drilled hole.  This helps to harden and stabilize the soil under surrounding buildings and structures.

All of the work has a great benefit.  Not only will the Union Square | Market Street Station give residents and tourists easy access to Union Square, it will also have a walk way connecting passengers easily to other Muni lines and BART.

Here are some photos of the construction:

A worker adds a section of drill shaft during compensation grouting operations south of Geary.

A worker adds a section of drill shaft during compensation grouting operations south of Geary

 

Looking south down the future south concourse, with the access shaft north of Ellis in the foreground.

Looking south down the future south concourse, with the access shaft north of Ellis in the foreground

 

Structural walls are being constructed inside the south concourse of the Union Square/Market Street Station.

Structural walls are being constructed inside the south concourse of the Union Square/Market Street Station

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One Response to “Union Square | Market Street Station Update”

  1. Janet Griggs 15 April 2016 at 4:30 am Permalink

    We have a small business located in Macy’s overlooking Union Square. The construction has severely impacted our sales negatively. I have been told by our Macy’s contacts that the construction disruption in Union Square will be over by Spring 2017 but I can’t find any specific information on your website concerning this or confirming this schedule. The only information I’ve found is that the subway will be operable toward the end of 2018. Any light you can shed on the condition of Union Square and when it will no longer be a construction site at least on the street level would be greatly appreciated.


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