MRCE Geotechnical and Foundation Engineering

Challenges Solved

The Second Avenue Subway is New York City’s first major expansion of the subway system in over 50 years. When fully completed, the line will stretch 8.5 miles along the length of Manhattan's East Side, from 125th Street in Harlem to Hanover Square in lower Manhattan. It is planned to be constructed in four phases, with the first phase below Second Avenue from 63rd to 96th streets expected to begin service in December of 2016.

MRCE performed geotechnical investigations of subsurface conditions, determined building foundation underpinning requirements, and designed deep support systems for excavations. MRCE designed multi-level bracing systems and temporary street decking and utility suspension for the 96th street "cut and cover" station, which stretches from 92nd Street to 99th Street, and above the rock cavern station at 86th Street.