19 November 2015 ~ 0 Comments

4th and King Trackwork Installation

Work to upgrade the track interchange at 4th and King went through the week of Veteran's Day.

Work to upgrade the track interchange at 4th and King went through the week of Veteran’s Day

The Central Subway has achieved a major milestone:  the installation of the initial tracks at 4th and King, which will change the alignment of the T-Third to head North towards Chinatown.   This was a two phased project; the first part was completed over the Labor Day weekend and the second phase was performed from the evening of Friday, November 6 through Saturday, November 14.

The construction crew worked around the clock starting Friday evening, November 6.  The work started with drilling into pavement and removing old tracks to install a new track configuration.   The crew was successful in laying down the new tracks which is the foundation for the T line to go down4th street towards the new surface station at 4th and Brannan and will then extend to the tunnel located at 4th and Bryant.  The T-Line will then travel to Yerba Buena | Moscone, Union Square | Market Street and Chinatown.

The project had impacts on traffic, pedestrian activity and Muni transit.   Thank you to the public for your cooperation as we work to build a new subway for our City.   When the Central Subway begins revenue operation in 2019, the travel time from 4th and King to Chinatown will be under 8 minutes.   Passengers will have quicker access to other Muni lines and BART.  Thank you to our city Agency family and Regional Partners for collaborating with the Central Subway Team.

Here are some photographs of the activity:

 

Workers prepare to weld grounding copper to the tracks, using a rapidly-burning powder which burns at a high temperature.

Workers prepare to weld grounding copper to the tracks, using a rapidly-burning powder which burns at a high temperature

New tracks now join into the old configuration, approaching the 4th and Berry Metro platform.

New tracks now join into the old configuration, approaching the 4th and Berry Metro platform.

A worker makes markings at an X junction, where N Judah tracks cross the future T Line tracks going north on 4th Street.

A worker makes markings at an X junction, where N Judah tracks cross the future T Line tracks going north on 4th Street

Each section of track is specifically engineered to fit precisely with the next.

  Each section of track is specifically engineered to fit precisely with the next

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