2020年2月14日 · The box-jacking system from Italy-based Petrucco uses hydraulic jacks and spreaders to move a cast-in-place concrete box carrying the entire underpass and rail bridge into place in a matter of hours, with limited disruption to railway traffic.

Box Jacking is a trenchless method of underpass construction that consists in pushing one or more prefabricated concrete boxes into the soil using high capacity hydraulic jacks, while excavating the soil.

LIRR service runs 24/7, with different schedules depending on destination and time of day. Our system includes over 700 miles of track on 11 different branches, stretching from Montauk on the eastern tip of Long Island to Penn Station in Manhattan, approximately 120 miles away.

2019年9月6日 · The team is using Italian engineering firm Petrucco’s box-jacking system which uses hydraulic jacks and spreaders to move the cast-in-place concrete box carrying the entire underpass and rail bridge into place in a matter of hours with limited disruption to railway traffic, according to Engineering News-Record (ENR).

2020年5月12日 · Thanks to a box-jacking method new to the U.S., a contractor “ambassador” program and flexibility allowed by design-build, the New York Metropolitan Transportation …

The Long Island Rail Road (reporting mark LI), or LIRR, is a railroad in the southeastern part of the U.S. state of New York, stretching from Manhattan to the eastern tip of Suffolk County on Long Island. The railroad currently operates a public commuter rail service, with its freight operations contracted to the New York and Atlantic Railway.

2 天之前 · Discussion of the past and present operations of the Long Island Rail Road. I've read that the LIRR had 2500 freight cars at one time. I can only recall just some m/w gondolas, railcars and a couple of box cars in yards. With all my books on the LIRR I've only seen photos of the old Brooklyn Ash cars and Milk cars.

2021年7月10日 · Once again utilizing box-jacking to push the second concrete U-structure and steel bridge into place at Willis Avenue. This technology advancement has helped to drastically reduce construction time and we cannot wait to see what the future of technology holds.

2019年9月1日 · We were jacking a culvert under the former Santa Fe surf line in Orange County when the box hit abandoned timber pilings (maybe 80 years old). That so disturbed the roadbed the only option was to hurridly dig out the embankment, pull the …

2020年7月15日 · Thanks to a box-jacking method new to the U.S., a contractor “ambassador” program and flexibility allowed by design-build, the New York Metropolitan Transportation Authority (MTA) is well underway with a $2.6-billion, 10-mile project to add a third track to the Long Island Rail Road (LIRR) commuter line.