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The TBM is on its way


the TBM blade head - photo courtesy of the MTA


According to a delivery notification that was went out today, the Second Avenue Subway Tunnel Boring Machine will be delivered to the UES over the next 3 weeks (April 12th-30th). The TBM blade head is 22 feet in diameter and together with its associated back-up equipment, excavation material haulage system and removal equipment is over 300 feet long and weighs all of 485 tons. Some of the individual heavier components of the TBM weigh between 60 to 125 tons. So basically this thing is huge! The TBM delivery looks to be the biggest (no pun intended) event Upper Yorkville has seen in quite sometime so make sure to bring the kiddies for a photo op.

Details from the official delivery notice:

“All lowering of the TBM and back-up components will take place at the deck opening between 92nd and 91st Streets. A large crane will be located south of this deck opening to perform the lowering operations

Due to the size of the machinery and DOT oversize load restrictions, the delivery of this equipment will need to occur at night between the hours of 11:00 pm and 6:00 am, on weekdays only. Lifting the equipment off the trucks and lowering into the launch Box will require up to three lanes of Second Avenue to be closed to traffic for two weeks (April 12 through April 23) and one lane for one week (April 26 through April 30) between the hours of 11:00 pm and 6:00 am. In addition, all lanes will be shut down during the actual pick of the equipment for safety reasons. Second Avenue will remain open to traffic during other times. Staging of the delivery trucks will be alongside the Launch Box and possibly at discrete locations north of 95th Street.

Please be advised that a safe work plan for this operation is in place. Due to the nature of this extended operation and safety precautions to be taken, the area will be lighted and some noise during its performance is unavoidable. MTACC will make every effort to minimize any impact to the community during these night-time hours. ”

More background on the TBM and the Launch Box:

- Details of the TBM blade on The Launch Box

- Video of the TBM being tested

- Some TBM love over on Second Ave Sagas

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