Specialized in civil, structural, and transportation projects
We are extensively familiar with roadway design including the design of two-lane arterials, realignments, service and access roads, park trails, and bicycle paths. Our continuous work has contributed to the development of experienced transportation design personnel ready to meet the requirements in NYSDOT Highway Design Manual, NJDOT Roadway Design Manual, and the AASHTO Geometric Design Manual. In addition to geometric design of highways, we also perform pavement evaluations and designs.
Restoration of Long Island City Yard

This project represents the last phase of mitigations and improvements to the Long Island City (LIC) Yard, which originally began in the mid-1990’s. After experiencing significant damage during Super Storm Sandy, the LIRR elected to add mitigation measures in addition to the previously p... MORE >>

Design Services on an As-Needed Basis


The storm surge from Hurricane Sandy caused tremendous damage to MTA Bridges and Tunnels, including the flooding of the Queens – Midtown Tunnel (QMT) and the Hugh L. Carey Tunnel (Brooklyn Battery Tunnel, BBT). This project involves the design of flood mitigation measur... MORE >>

On-Call General A & E Services

Under this five year term contract., SJH is providing design services as a DBE subconsultant on the GFP team on an as-needed basis to support WMATA’s capital improvements program.  Services to date have involved the design of new facilities as well as upgrades and expansions.  ... MORE >>

Route 18 Northbound Resurfacing Project Milepost 5.5 to 11.3

For this $3.7 million federally funded pavement resurfacing project, SJH is providing engineering services for the pavement evaluation and final design of Route 18 NB, from North of Route 138 to South of Deal Road between Milepost 5.5 to 11.3, which consist of two 12-foot travel lanes, a 3-foo... MORE >>

Hudson Bergen Light Rail Transit System Design-Build Project Retaining Wall and Viaduct Pier Design

This $55 million design-build project involved the design and construction of a viaduct to support two tracks for the Hudson Bergen Light Rail System, a station building, a retaining wall at the end of the viaduct, emergency stairs for NJ Transit personnel to access the tracks from the street ... MORE >>