• Light rail vehicles for the T Third Line will be replaced by buses for the duration of this work.  These buses will not be loading passengers at the existing light rail platforms along the T Third alignment, but will instead be loading nearby.  Boarding near the Caltrain Station will be located on 3rd between King and Berry.  Please be aware of signage.  Community ambassadors will help communicate proper boarding areas.
• The E Line will be temporarily shut down.
• The N Judah will not be boarding at the Caltrain platform.  Instead, boarding for the N Judah will be located at a temporary platform constructed at 3rd and King.
• Bus shuttles will replace subway service every night after 9:30 pm

Motorists coming down the King Street offramp from I-280 will need to take a right turn at 5th and a left on Berry to travel through the area.  Once on Berry, drivers will be able to go through to 3rd Street, where they can make a right or left turn.  Vehicles traveling south on 4th Street will not be able to travel past King to Berry.  Both lanes on Berry will be converted to go eastbound between 5th and 3rd.  Motorists traveling west on King will not be affected.  Please take these temporary detours into consideration when traveling through the area.

Location of future track configuration work over the Labor Day weekend

The summer of 2015 is coming to a close with a brunch of activity! The San Francisco Municipal Transportation Agency (SFMTA) is focused on projects that will make transportation safer and more reliable. In addition, BART will be shutting down the Transbay Tube for weekend track repairs. And Billy Joel is in town for a concert on Saturday, September 5 at AT&T Park.

For the Central Subway project, crews will be installing track and making infrastructure upgrades at the intersection of 4^th and King Streets this Friday, Sept. 4 through Tuesday, Sept. 8. This is planned as a two phased project, with the second phase scheduled for early 2016.

Work will begin at 10p.m. Friday, September 4 and continue ‘round the clock through early morning Tuesday, September 8. Construction on Friday September 4 is anticipated to cause a significant amount of noise due to jack-hammering from 10 p.m. to 2 p.m. on Saturday as crews break into a 16-inch thick pavement at 4^th and King to prepare for replacing tracks and switches.

The road work will impact Muni travel as well as people driving, walking and biking in the area. Here’s what to expect:

Muni Metro

• Traveling Downtown from Sunnydale:
  • Daytime: Disembark from the T Third at 4th and Berry streets. Walk to the 4^th and King platform and board the N Judah outbound
  • After 9:30pm: Disembark from the T Third at 4th and Berry streets. Walk to the 4^th and King bus stop and board the early shutdowns bus shuttle
•  Traveling to Sunnydale:
  • Daytime: Customers board the N Judah toward the Caltrain station between Van Ness Station and Embarcadero Station:
    • Disembark at the temporary platform at the mid-block crosswalk on King Street between 3^rd and 4^th streets, then
    • Connect to the southbound T Third train toward Sunnydale at 4^th and Berry streets OR
    • Customers may be dropped off at the 4^th and King Platform; then
  • Connect to the southbound T Third train toward Sunnydale at 4^th and Berry streets

• Americans with Disabilities Act (ADA) passengers can always choose to disembark at 4th Street. However, there will also be an ADA ramp at the temporary platform.

• After 9:30pm: Customers board the early shutdowns bus shuttle toward the Caltrain station
  • Disembark at the 4^th and King bus stop, then
  • Walk to the southbound T Third train toward Sunnydale at 4^th and Berry streets
• Traveling to Balboa Park:
  • Daytime: Board the N Judah outbound at the 4^th and King Platform toward downtown:
  • Disembark between Embarcadero Station and Van Ness Station, then
  • Connect to the outbound K Ingleside toward Balboa Park
• Customers waiting for the T Third Line between the Embarcadero and the 4^th and King stations should board an N Judah train
• After 9:30pm: Board the early shutdowns bus shuttle stops and transfer at St. Francis Circle for the on-surface M-Ocean View or K-Ingleside trains

Detour map for Muni Riders

Traffic

• Southeast section of 4^th and King intersection will be closed to motorists. Delays are expected
• On-ramp and off ramp to 1-280 will remain open. Motorists are to take the 6^th Street off ramp and follow detour routes.
• Motorists exiting the 4^th Street off-ramp will be detoured to 5^th and Berry
• No left turn permitted from westbound King to southbound 4^th

Reroute Map

Pedestrians and Bicyclists

• No crossing at the intersection of 4^th and King

All this construction will have a great end result. When open in 2019, the Central Subway will connect neighborhoods and provide faster and safer transportation to BART and other Muni lines. To learn more about the project visit www.centralsubwaysf.com.

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!

The cutter head of tunnel boring machine (TBM) Mom Chung can be seen in the background as workers disassemble the shield of TBM Big Alma.

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. Until Monday, July 28, 4th Street from Howard to Folsom streets will have one traffic lane. This area will continue to have a lane reduction overnight from 7 p.m. to 5 a.m.

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. A section of the sidewalk at the northeast corner of the Washington and Stockton intersection will be demolished in order to install a new fire hydrant.

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 end of August. 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.

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.

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

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

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.

The tunneling contractor has begun installing below-ground walls to prepare for tunneling at this site on 4th Street between Howard and Folsom streets.

Since our last update, construction in Union Square and North Beach has paused for the holiday season, while work at two sites in SoMa has continued to move forward. In addition, work to install subsurface monitoring equipment has commenced in Chinatown.

Here’s what you can expect in the next three weeks as construction continues in SoMa and Chinatown:

• Tunnel Launch Box (4th Street between Harrison and Bryant streets): The contractor will install beams across the below-ground walls that have been constructed around the perimeter of this site. Excavation and construction of an access ramp is also planned to begin. To facilitate construction, this block of 4th Street will remain closed to all vehicle traffic. The on-ramp to westbound I-80 at 4th and Harrison streets may be closed on weeknights from 8 p.m. to 4 a.m. and all day Saturday and Sunday. The sidewalk on the east side of the block will remain open to pedestrians. Traffic and pedestrian controls are in place. For more information on current construction impacts at this site, please check out this construction notice.

• Yerba Buena/Moscone Station Tunnel Pre-Construction (4th Street between Howard and Folsom streets): The tunneling contractor has commenced installation of below-ground walls, called headwalls, at the site of the future Yerba Buena/Moscone Station. The walls will cross 4th Street at two points on this block. At least two lanes of traffic on 4th Street will remain open at most times; however, the block may be reduced to one lane for one night to facilitate work involving large cranes. The contractor will continue working on the western side of the block, with at least two lanes open on the east side of the street (left lanes for southbound traffic). Pedestrian controls will be in place during periods of sidewalk impact.

• Chinatown Subsurface Instrument Installation (Stockton Street between Sacramento Street and Broadway): Crews will continue installing subsurface instruments that will measure ground conditions related to the Central Subway tunnel. One lane of traffic on up to two approximately half-block sections of Stockton Street may be closed at a time during construction hours. Construction hours are Monday to Friday, 10 p.m. to 7 a.m. More information is available in this construction notice.

We also post construction, auto detour and Muni impact information on our project Google Map.

We appreciate your continued patience while construction is in progress.

Check out these photos of restoration in progress last week:

Stockton Street between Ellis and O’Farrell streets was paved and restriped last week.

Central Subway crews will continue building below-ground walls, called headwalls, at this location on Stockton Street early next year.

In North Beach, this lane was paved, and traffic has returned to normal on Columbus Avenue between Union and Powell streets.

During the holiday season, buses will stop as regularly scheduled at this bus stop, on Columbus Avenue at Union Street.

Construction will continue on this block of 4th Street (between Howard and Folsom streets). Last week crews restored the lanes shown here to prepare to begin work on the other side of the street.

For more information about Central Subway construction during the holiday season, check out this recent blog post.