This project involved the replacement of wooden catenary poles for approximately 22 miles along New Jersey Transit’s Gladstone Line. T.Y. Lin International (TYLI) was retained to carry out subsurface investigations and to design appropriate foundation types.
- Recommendations & Design Criteria for new pole foundations
- Geotechnical Engineering
The purpose of TYLI’s investigations was to obtain subsurface information via field exploration and laboratory testing programs, develop recommendations and design criteria for proposed new steel pole foundations, earthworks and other geotechnical aspects of the proposed construction. One hundred thirteen (113) shallow and deep borings were installed utilizing three (3) different types of drilling rigs.
Based on the subsurface information, drilled shafts with or without rock socket and driven shaft with or without rock socket were recommended as this foundation type for the proposed steel poles for this project.
With a construction cost estimated at $100 million, this project will construct a new station on Metro North’s Harlem Line.