28 December 2012 ~ 0 Comments

Introducing weekly Central Subway construction update emails

Today we are excited to announce the debut of our Central Subway construction update emails. These emails will provide information about Central Subway construction along the project alignment in SoMa, Union Square, Chinatown and North Beach. Starting today, we will email these updates weekly on Fridays to provide an overview of the Central Subway construction […]

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19 November 2012 ~ 1 Comment

Construction Update: Central Subway construction during the holiday season

This construction site near Union Square will be restored and reopened to traffic during the holiday season. During the holiday season, construction at some currently active Central Subway construction sites will pause, with roadways and pedestrian walkways restored to regular use. At other sites, construction will continue. This blog post provides a summary of construction […]

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27 September 2012 ~ 0 Comments

Traffic Alert: New traffic configuration starting Saturday in SoMa (4th Street between Harrison and Bryant)

The traffic configuration near this construction site in SoMa will be modified starting Saturday. Starting Saturday, September 29, a new traffic pattern will be established on 4th Street between Harrison and Bryant streets, at the site where tunneling will begin next year. To facilitate construction in the northwest and southeast sections of the block, vehicles […]

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07 September 2012 ~ 0 Comments

Construction Update: New traffic configurations in SoMa, North Beach as tunnel preparation progresses

This block of Columbus Avenue in North Beach is temporarily restored for traffic at the end of each work day. With autumn just around the corner, tunnel pre-construction continues to move forward in SoMa, Union Square and North Beach. As tunneling contractor Barnard Impregilo Healy JV completes work along the alignment, new traffic configurations are […]

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31 August 2012 ~ 1 Comment

Traffic Alert: New traffic configuration starting next week in SoMa

To avoid traffic congestion on this section of 4th Street, we suggest using the detours described below. As tunneling contractor Barnard Impregilo Healy Joint Venture continues to make progress on┬átunnel pre-construction work, traffic configurations at a construction site in SoMa will be modified next week, starting Tuesday, September 4. No Central Subway construction will occur […]

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17 August 2012 ~ 0 Comments

Construction Update: Tunnel preparation underway at four sites, Union Square utility relocation substantially complete

Tunnel pre-construction work is now underway on Ellis Street. The tall machine shown here on the right is used to perform ground stabilization work known as jet grouting. Tunnel pre-construction has continued to ramp up in recent weeks as tunneling contractor Barnard Impregilo Healy mobilized at two new sites along the project alignment: Around Union […]

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27 July 2012 ~ 0 Comments

Construction Update: Tunnel contract work starts next week in Union Square area

Construction of a major excavation known as a launch box is underway on 4th Street between Bryant and Harrison streets. At nearly 500 feet long, 50 feet wide and up to 40 feet deep, the launch box will take up most of the block. In the next three weeks, work to prepare for tunneling will […]

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25 July 2012 ~ 1 Comment

Traffic on Stockton Street and Grant Avenue to Be Modified to Accommodate Central Subway Construction Near Union Square

New Central Subway construction is beginning soon around Union Square. Beginning Monday, July 30, Stockton Street between Ellis and Geary streets will be closed to all vehicles except emergency vehicles to accommodate construction of the Central Subway tunnel and Union Square/Market Street Station. To facilitate local access to Union Square, Grant Avenue between Geary and […]

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27 June 2012 ~ 1 Comment

Launch box construction proceeds in SoMa with cranes and specialized excavators now in operation

This video shows the work currently underway on 4th Street between Bryant and Harrison streets in SoMa. The full HD video can be downloaded here. It may look like a lot of dirt and mud right now, but in just a few years, what you see in the video above will become the Central Subway […]

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21 June 2012 ~ 0 Comments

Traffic Alert: Nighttime closure of westbound I-80 onramp at 4th and Harrison starting Monday, June 25

Motorists traveling south on 4th Street will be directed to access westbound I-80 as shown above while the onramp at 4th and Harrison streets is closed. (Click on the map to enlarge.) Starting next Monday, June 25, the onramp to westbound I-80 at 4th and Harrison streets will be closed between the hours of 8 […]

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