A sheet of steel is lowered into a trench for safety during excavation

This notice provides a construction update and a look ahead for what to expect in the areas where we are building four new stations along the alignment. You’ll find information about work activities, traffic and transportation impacts taking place over the next two weeks at SoMa, Yerba Buena|Moscone, Union Square and Chinatown.

Construction schedules, bus routes, and stop locations are subject to change due to unforeseen conditions. Signs will be posted at affected stops to advise of service changes.

Construction on the surface station to be located at 4th between Bryant and Brannan streets continues. Current activities include installation of utilities and domestic and high pressure water lines. Construction to install signal priority equipment and track improvements at the intersection of 4th and King will be performed Labor Day Weekend. Work will begin at 10p.m. Friday, September 4 through 5a.m. Tuesday, September 8.

Our thanks go out to the businesses, residents, shoppers, commuters, and all those who are touched by the Project, for their continued engagement as we work to extend the city’s public transportation system.

The Central Subway Team

Upcoming Labor Day Weekend (10 p.m., Friday, September 4 to 5 a.m., Tuesday, September 8) work at 4th & King includes installation of transit signal priority equipment as well as track improvements for the future Central Subway extension of the T Third Line.

Traffic will be impacted due to construction as well as weekend activities. Motorists travelling on I-280 are advised to use the 6th Street on and off ramps.

A temporary platform is being built for N and T Muni Metro riders to disembark and/or transfer to connecting trains at 4th & Berry in order to complete trips to the southern neighborhoods of the city.

Want to see more photos of project construction?  Check out our Flickr, updated weekly!

The drill rig is used to construct the dewatering wells

Construction on the Central Subway project continues in Chinatown.

We started installing dewatering wells along Stockton Street between Sacramento and Jackson.   This is in preparation for the Chinatown Station.  The purpose of the wells is to remove water from solid material when excavation is being performed in the near future.   The contractor will dig approximately 150 feet deep to install the wells.   This activity is being performed Monday through Friday from 9 p.m. to 5 a.m.    The well are anticipated to be completed in September when day time work hours are slated to resume.

The drill rig is parked in the metered spaces during the daytime and weekend hours.

Here are some pictures of the drill rig:

One of the rotary rigs used to excavate the dewatering wells

View of the rig parked on Stockton Street during the day

Infographic shows construction process, drilling the well, inserting pipe and installing pumps

Work to construct the station’s platform is now complete

Central Subway | Project Advancement

August 7 – August 17, 2015

This notice provides a construction update and a look ahead for what to expect in the areas where we are building four new stations along the alignment. You’ll find information about work activities, traffic and transportation impacts taking place over the next two weeks at SoMa, Yerba Buena|Moscone, Union Square and Chinatown.

Construction schedules, bus routes, and stop locations are subject to change due to unforeseen conditions. Signs will be posted at affected stops to advise of service changes.

Construction to build the Yerba Buena|Moscone Station continues along 4th between Howard and Folsom.  Activities include excavation, roof deck installation and utility relocation.

Our thanks go out to the businesses, residents, shoppers, commuters, and all those who are touched by the Project, for their continued engagement as we work to extend the city’s public transportation system.

The Central Subway Team

Utility relocation work is underway at the intersection of Washington and Stockton streets.

Workers move welding equipment for the construction of temporary supports in the station entrance structure.

Temporary supports, also known as walers, are installed prior to the construction of the finished walls.

Want to see more photos of project construction?  Check out our Flickr, updated weekly!

Heads up! Construction work at 4th & King is slated for Labor Day Weekend, September 4 through 7.

This will be a two-phase project for signal installation and track enhancement. Below is the area where work will take place.

Over the Labor Day Weekend, the T Third Line rail service will still run, but Muni Metro riders are advised that through-service will not be continuous at the intersection at 4th and King, so a transfer will be necessary. Motorists traveling on I-280 northbound are advised to take the 6th Street exit due to detour at 4th & King. Check here for future updates and details.

Want to see more photos of project construction?  Check out our Flickr, updated weekly!

Sheets of corrugated steel are used to construct the north concourse roof deck.

This notice provides a construction update and a look ahead for what to expect in the areas where we are building four new stations along the alignment. You’ll find information about work activities, traffic and transportation impacts taking place over the next two weeks at SoMa, Yerba Buena|Moscone, Union Square and Chinatown.

Construction schedules, bus routes, and stop locations are subject to change due to unforeseen conditions. Signs will be posted at affected stops to advise of service changes.

Construction to build the Union Square I Market Street Station continues along Stockton Street between Post and Ellis including the partial demolition of the Union Square Garage. Activities include roof deck installation, demolition of the northwest corner of the Union Square Garage, utility relocation, compensation, jet grouting and sheet pile installation.

Our thanks go out to the businesses, residents, shoppers, commuters, and all those who are touched by the Project, for their continued engagement as we work to extend the city’s public transportation system.

The Central Subway Team

Workers removing temporary forms used previously when pouring concrete for the roof slab

This notice provides a construction update and a look ahead for what to expect in the areas where we are building four new stations along the alignment. You’ll find information about work activities, traffic and transportation impacts taking place over the next two weeks at SoMa, Yerba Buena|Moscone, Union Square and Chinatown.

Construction schedules, bus routes, and stop locations are subject to change due to unforeseen conditions. Signs will be posted at affected stops to advise of service changes.

Dewatering wells installation on Stockton Street from Sacramento to Washington streets continues through October. During work hours the mid-block bus stop on the east side of Stockton Street between Sacramento and Clay streets will be relocated just north of Clay Street.

Our thanks go out to the businesses, residents, shoppers, commuters, and all those who are touched by the Project, for their continued engagement as we work to extend the city’s public transportation system.

The Central Subway Team

Installation of corrugated steel sheets is part of the roof building process for the north mezzanine at the Union Square | Market Street Station.

Demolition work of the floors at the southeast corner of the Union Square Garage is underway. This area will be the future north entrance of the Union Square | Market Street Station.

At the corner of Stockton and Geary, construction is in full swing as crews work to build a section of the north mezzanine roof. Businesses remain open during construction.

Want to see more photos of project construction?  Check out our Flickr, updated weekly!

At the intersection of Stockton and Geary work to construction portion of the station roof has begun

This notice provides a construction update and a look ahead for what to expect in the areas where we are building four new stations along the alignment. You’ll find information about work activities, traffic and transportation impacts taking place over the next two weeks at SoMa, Yerba Buena|Moscone, Union Square and Chinatown.

Construction schedules, bus routes, and stop locations are subject to change due to unforeseen conditions. Signs will be posted at affected stops to advise of service changes.

Now through August 14, the contractor is performing work on the 36′ sewer line and the removal of the existing high water pressure line at the 4th and King streets intersection between the hours of 9a.m. – 3p.m.  No through-traffic available on King Street to I-280.

Our thanks go out to the businesses, residents, shoppers, commuters, and all those who are touched by the Project, for their continued engagement as we work to extend the city’s public transportation system.

The Central Subway Team