Box Jacking of an underpass with traffic interruption in Denton Avenue, NY, for the LIRR Third Track expansion project, . Very particular shape with open cross section, due to an existing culvert in the centerline of the trajectory. Instead of a common rectangular cross section underpass, the structure in this particular case consisted in 2 footings connected with an horizontal diaphragm.

LIRR Expansion Project
Denton Avenue, Long Island NY

Description

Portal frame jacking of an underpass with traffic interruption in Denton Avenue, NY, for the LIRR Third Track expansion project. Very particular shape with open cross section, due to an existing culvert in the centerline of the trajectory. Instead of a standard rectangular cross-section underpass, the structure in this particular case consisted of 2 footings connected with a horizontal diaphragm.

An existing old underpass from 1888 was demolished within the same weekend shutdown, prior to the jacking operations.

Box Jacking of an underpass with traffic interruption in Denton Avenue, NY, for the LIRR Third Track expansion project, . Very particular shape with open cross section, due to an existing culvert in the centerline of the trajectory. Instead of a common rectangular cross section underpass, the structure in this particular case consisted in 2 footings connected with an horizontal diaphragm.
Box Jacking of an underpass with traffic interruption in Denton Avenue, NY, for the LIRR Third Track expansion project, . Very particular shape with open cross section, due to an existing culvert in the centerline of the trajectory. Instead of a common rectangular cross section underpass, the structure in this particular case consisted in 2 footings connected with an horizontal diaphragm.
Job Sheet