Hi! Welcome...

SFMTA’s Central Subway will connect San Francisco’s southeast neighborhoods to downtown and Chinatown. Whether you’re a concerned citizen, business owner, Muni customer, or just stumbled onto our blog, we welcome your questions and encourage you to connect with us. Follow us for the latest Central Subway news and information.

18 July 2014 ~ 0 Comments

Project Advancements | July 19 – July 28, 2014

At the retrieval shaft in North Beach, portions of the body of the tunnel boring machines (TBMs) are awaiting removal from the site.

At the retrieval shaft in North Beach, portions of the body of the tunnel boring machines (TBMs) are awaiting removal from the site.

During the next 10 days, Central Subway work continues 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. You can also find construction, traffic detour, and Muni impact information on our project Google Map. For safety reasons, we encourage the public to follow all traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King/Berry): Potholing for utilities continues next week on 4th Street between Bryant and King. On Brannan between 4th and 5th Streets, work on utilities continues. Temporary walkways are in place around the construction zones.

Northern SoMa (Market to Harrison): At 4th and Folsom, work to build the Yerba Buena/Moscone Station continues. This includes construction of the station walls within the work site and water line replacement at the intersection of 4th and Folsom. One lane of traffic continues on 4th between Howard and Folsom streets from 7 p.m. to 5 a.m. through next week.

On Tuesday, July 22 from 2 p.m. to 5 p.m. 4th Street from Howard to Folsom streets will have one traffic lane.

Union Square: Stockton Street between Ellis and Geary is closed to vehicular traffic to allow for construction of the Union Square/Market Street Station. Work is underway for pile installation to construct the station walls. For the month of July, Stockton Street between Post and Geary will be closed to vehicular traffic. Please use alternate routes and follow construction signs.

Pile installation takes place at the southwest intersection of Stockton and O’Farrell Streets until August 18. One lane of travel will be open. Expect delays and please use alternative routes.

Muni service impact:
Until August 1, the bus stop at Geary and Stockton will be temporarily discontinued. Please board bus at Geary and Powell. Please check back on our weekly Construction Update for the most current information on the re-opening of this stop.

Chinatown:  The contractor started station wall construction at the future station site and on the adjacent section of Washington Street. Work to replace high pressure water pipeline and install new fire hydrant on Washington is ongoing. Installation of observation wells at the corner of Washington and Stockton Streets may take place July 24 and July 25 from 7 p.m. to 3 a.m.

North Beach: Work continues at 1731-1741 Powell. Sustainable Streets is constructing bulbs on Columbus Avenue between Filbert and Union Streets, and widening the sidewalk on both sides of the street for this block. Street restoration work is expected to be completed by the Fall of 2014. More information is available in this notice.

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system.

11 July 2014 ~ 0 Comments

Construction Update | July 12 – July 21, 2014

140708_1102_Chinatown

At the future Chinatown Station site, an excavator prepares to load a truck with materials excavated during underground station wall construction.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post 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. Hydrant relocation work to occur at 4th and Bryant. On Brannan between 4th and 5th Streets, sidewalk construction to occur. Temporary walkways are in place around the construction zones.

Northern SoMa (Market to Harrison): At 4th and Folsom, work to build the Yerba Buena/Moscone Station continues. This includes construction of the station walls within the work site and water line replacement at the intersection of 4th and Folsom.

Union Square: To allow for construction of the Union Square/Market Street Station, Stockton Street between Ellis and Geary is closed to vehicular traffic. Work is underway for pile installation to construct the station walls. For the month of July, Stockton Street between Post and Geary will be closed to vehicular traffic. Please use alternate route and follow construction signs.

Until July 30, the bus stop at Geary and Stockton will be temporarily discontinued. Please board bus at Geary and Powell. Service at this stop may be resumed Thursday, July 31 at 5 a.m.

Starting Friday night, July 11 until July 28, pile installation will take place at the southwest intersection of Stockton and O’Farrell Streets. One lane of travel will be open. Expect delays and please use alternative routes.

Chinatown:  The contractor has started station wall construction within the future station site and on the adjacent section of Washington Street. Work to replace high pressure water pipeline and install new fire hydrant on Washington is ongoing. Installation of observation wells at the corner of Washington and Stockton Streets may take place July 17 and July 18 from 7 p.m. to 3 a.m.

North Beach: Work will continue at 1731-1741 Powell. Sustainable Streets is constructing bulbs on Columbus Avenue between Filbert and Union Streets, and widening the sidewalk on both sides of the street for this block. Street restoration work is expected to be completed by the 3rd Quarter of 2014. More information is available in this notice.

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

-The Central Subway Team

03 July 2014 ~ 1 Comment

Construction Update | July 04 – July 14

Now that tunneling is complete, the TBM "Big Alma" is being prepped for removal.
Now that tunneling is complete, the TBM “Big Alma” is being prepped for removal.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post 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. Hydrant relocation work to occur at 4th and Bryant. On Brannan between 4th and 5th Streets, sidewalk construction to occur. Temporary walkways are in place around the construction zones.

Northern SoMa (Market to Harrison): At 4th and Folsom, work to build the Yerba Buena/Moscone Station continues. This includes construction of the station walls within the work site and water line replacement at the intersection of 4th and Folsom.

Union Square: To allow for construction of the Union Square/Market Street Station, Stockton Street between Ellis and Geary is closed to vehicular traffic. Work is underway for pile installation to construct the station walls. For the month of July, Stockton Street between Post and Geary will be closed to vehicular traffic. Please use alternate route and follow construction signs.

From July 7 to July 30, the bus stop at Geary and Stockton will be temporarily discontinued. Please board bus at Geary and Powell. Service at this stop may be resumed Thursday, July 31 at 5 a.m.

Starting Friday, July 11 through the weekend, pile installation will take place at the intersection of Stockton and O’Farrell Streets. Expect work 24 hours a day until Monday, July 14 at 5 a.m.

Chinatown:  The contractor has started station wall construction within the future station site and on the adjacent section of Washington Street. Work to replace high pressure water pipeline and install new fire hydrant on Washington is ongoing.

North Beach: At 1455 Stockton, the parking lot behind the Bank of America is now restored. The contractor has vacated this location. Work will continue at 1731-1741 Powell. Sustainable Streets is constructing bulbs on Columbus Avenue between Filbert and Union Streets, and widening the sidewalk on both sides of the street for this block. Street restoration work is expected to be completed by the 3rd Quarter of 2014. More information is available in this notice.

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

-The Central Subway Team

27 June 2014 ~ 0 Comments

Construction Update | June 28 – July 07

UMS detour color with direction 2

Union Square/Market Street Detours

Starting July 1, Stockton Street between Post and Geary will be closed for one month to vehicular traffic. Please use alternate route and follow construction signs.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post 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. Hydrant relocation work to occur at 4th and Bryant. On Brannan between 4th and 5th Streets, sidewalk construction to occur. Temporary walkways are in place around the construction zones.

Northern SoMa (Market to Harrison): At 4th and Folsom, work to build the Yerba Buena/Moscone Station continues. This includes construction of the station walls within the work site and water line replacement at the intersection of 4th and Folsom.

Union Square: To allow for construction of the Union Square/Market Street Station, Stockton Street between Ellis and Geary is closed to vehicular traffic. Work is underway for pile installation to construct the station walls. Beginning June 30 to July 31, every Monday through Thursday, the bus stop at Geary and Stockton will be temporarily relocated to mid-block between Stockton and Grant from 8 p.m. to 4 a.m. From July 11 to July 25, the bus stop at Geary and Stockton will be temporarily relocated every Friday at 10 p.m. through the weekend. Service will resume every Monday at 5 a.m. Signage will be posted.

Chinatown:  The contractor has started station wall construction within the future station site and on the adjacent section of Washington Street. Work to replace high pressure water pipeline and install new fire hydrant on Washington is ongoing.

North Beach: At 1455 Stockton, the restoration of the parking lot behind the Bank of America will be completed. Work will continue at 1731-1741 Powell. Sustainable Streets is constructing bulbs on Columbus Avenue between Filbert and Union Streets, and widening the sidewalk on both sides of the street for this block. Street restoration work is expected to be completed by the 3rd Quarter of 2014. More information is available in this notice.

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

20 June 2014 ~ 0 Comments

Construction Update | June 21 – June 30

The entrances to both subway tunnels can be seen here in the TBM launch box under 4th Street, near Harrison.

The entrances to both subway tunnels can be seen here in the TBM launch box under 4th Street, near Harrison.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post 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. Hydrant relocation work to occur at 4th and Bryant. A temporary walkway is in place around the construction zones. Street sweeping on June 23rd  (6am to 10am) on 4th Street from Bryant to Brannan along the west side of 4th Street and at the corner of Brannan.

Northern SoMa (Market to Harrison)At 4th and Folsom, work to build the Yerba Buena/Moscone Station continues. This includes construction of the station walls within the work site, water line replacement at the intersection of 4th and Folsom, and soil borings along 4th between Howard and Folsom.

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 for pile installation to construct the station walls. Construction hours will be Monday to Saturday from 7 a.m. to 11 p.m. Beginning May 30 to July 25, the bus stop at Geary and Stockton will be temporarily closed every Friday at 10 p.m. through the weekend. Service will resume every Monday at 4 a.m. One lane of traffic on O’Farrell Street at Stockton will start on Monday June 23rd. All travel lanes will be reopened by 4 a.m. on Wednesday, June 25th.

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. Sustainable Streets is constructing bulbs on Columbus Avenue between Filbert and Union Streets, and widening the sidewalk on both sides of the street for this block. Street restoration work is expected to be completed by the 3rd Quarter of 2014. More information is available in this notice.

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

13 June 2014 ~ 3 Comments

Construction Update | June 14 – June 23

On Wednesday, June 11, tunnel boring machine Big Alma joined her sister TBM Mom Chung to break through the concrete wall of the North Beach retrieval shaft.

On Wednesday, June 11, tunnel boring machine Big Alma joined her sister TBM Mom Chung to break through the concrete wall of the North Beach retrieval shaft.

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.

Northern SoMa (Market to Harrison)At 4th and Folsom, work to build the Yerba Buena/Moscone Station continues. This will include construction of the station walls within the work site and water line replacement at the intersection Fourth and Folsom. Night work is planned for these activities.

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 for pile installation to construct the station walls. Construction hours will be Monday to Saturday from 7 a.m. to 11 p.m. Beginning May 30 to July 25, the bus stop at Geary and Stockton will be temporarily be closed every Friday at 10 p.m. through the weekend. Service will resume every Monday at 4a.m. Muni service for this location will temporarily stop Mondays through Thursdays from 8 p.m. to 4 a.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. Roadway and sidewalk restoration on Columbus and Union will continue and is expected to be completed by the 3rd quarter of 2014.

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

-The Central Subway Team

06 June 2014 ~ 0 Comments

Construction Update | June 7 – June 16

On Monday, June 2, tunnel boring machine Mom Chung broke through the concrete wall of the retrieval shaft, ending excavation of the southbound tunnel. Staff were on hand to celebrate.

On Monday, June 2, tunnel boring machine Mom Chung broke through the concrete wall of the retrieval shaft, ending excavation of the southbound tunnel. Staff were on hand to celebrate.

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 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.

Northern SoMa (Market to Harrison)At 4th and Folsom, work to build the Yerba Buena/Moscone Station continues. This will include construction of the station walls within the work site and water line replacement at the intersection Fourth and Folsom. Night work is planned for these activities.

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 for pile installation to construct the station walls. Construction hours will be Monday to Saturday from 7 a.m. to 11 p.m. Beginning May 30 to June 23, the bus stop at Geary and Stockton will be temporarily be closed every Friday at 10 p.m. through the weekend. Service will resume every Monday at 4a.m. Muni service for this location will temporarily stop Mondays through Thursdays from 8 p.m. to 4 a.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 3rd quarter of 2014.

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

-The Central Subway Team

30 May 2014 ~ 0 Comments

Construction Update | May 31 – June 9

The first tunnel boring machine (TBM) will be arriving at the extraction pit soon.  The contractor has filled the retrieval shaft with water to balance pressure on the face of the machine.

The first tunnel boring machine (TBM) will be arriving at the extraction pit soon. The contractor has filled the retrieval shaft with water to balance pressure on the face of the machine.

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.

Northern SoMa (Market to Harrison)At 4th and Folsom, work to build the Yerba Buena/Moscone Station continues. This will include construction of the station walls within the work site and water line replacement at the intersection Fourth and Folsom. Night work is planned for these activities. At 4th and Jessie, crew will be drilling and installing casing underneath 4th Street.

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 for pile installation to construct the station walls. Construction hours will be Monday to Saturday from 7 a.m. to 11 p.m. Beginning May 30 to June 23, the bus stop at Geary and Stockton will be temporarily be closed every Friday at 10 p.m. through the weekend. Service will resume every Monday at 4a.m. Muni service for this location will temporarily stop Mondays through Thursdays from 8 p.m. to 4 a.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 3rd quarter of 2014.

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

23 May 2014 ~ 0 Comments

Construction Update | May 24 – June 2

We are installing inter-locking piles at the Union Square/Market Street Station site. Once finished, these will be the outer walls of the new station.

We are installing inter-locking piles at the Union Square/Market Street Station site. Once finished, these will be the outer walls of the new station.

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 weeknights from 12 a.m. to 5 a.m. One lane of the I-80 off-ramp at 4th and Bryant may be closed during the daytime 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 construction of the station walls within the work site and water line replacement at the intersection Fourth and Folsom. Night work is planned for these activities.

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 Saturday from 7 a.m. to 11 p.m. Starting Tuesday, May 28, one traffic lane will be closed on Geary between Stockton and Powell from 8 p.m. to 4 a.m. This closure will be on weeknights until June 30.

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.

16 May 2014 ~ 1 Comment

Construction Update | May 17 – May. 26

Work to prepare for surface track construction on 4th Street involves locating and moving underground utilities.

Work to prepare for surface track construction on 4th Street involves locating and moving underground utilities.

At 4th and Bryant I-80 off-ramp, three lanes may be closed on weeknights from 12 a.m. to 5 a.m. and one lane may be closed during the daytime from 10 a.m. to 3 p.m.

In Union Square, one traffic lane will be closed from Geary to Powell from 8p.m. to 4a.m. starting Tuesday, May 20.

At 1455 Stockton Street, the contractor will be demobilizing and delivering oversize equipment next Wednesday, May 21 to Friday, May 23 between the hours of 11 p.m. to 6 a.m.

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 weeknights from 12 a.m. to 5 a.m. One lane of the I-80 off-ramp at 4th and Bryant may be closed during the daytime 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 construction of the station walls within the work site and water line replacement at the intersection Fourth and Folsom. Night work is planned for these activities.

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 Saturday from 7 a.m. to 11 p.m. Starting Tuesday, May 20, one traffic lane will be closed on Geary between Stockton and Powell from 8 p.m. to 4 a.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.