All Projects
Buildings/Facilities
CI / REI
Civil
Construction Mgmt
Lighting
Structural
Transportation
  • Condition Survey of Lincoln Tunnel Ventilation Buildings
    READ MORE
  • NYCT “A” Train Subway Infrastructure
    READ MORE
  • Traffic Circulation Study
    READ MORE
  • EWR Airtrain Guideway Inspection
    READ MORE
  • Bayonne Bridge Biennial Inspection
    READ MORE
  • REI Services for Reconstruction of Union Turnpike Retaining Wall
    READ MORE
  • Port Elizabeth & Port Newark Bridges Biennial Inspection
    READ MORE
  • Water Main Distribution Systems
    READ MORE
  • REI Servies for the Replacement of Distribution Watermain in 234th St
    READ MORE
  • Initial Tunnel Inspection and Condition Assessment of the Queens-Midtown Tunnel and Hugh L. Carey Tunnel
    READ MORE
  • Pedestrian Ramps at Historic Properties
    READ MORE
  • GWB Biennial Inspection
    READ MORE
  • East Side Access
    READ MORE
  • Pedestrian Ramps at NYCT Facilities
    READ MORE
  • PATH Stations Structural Inspection
    READ MORE
  • JFK International Airport – Multiple Projects
    READ MORE
  • Temporary Lighting Systems
    READ MORE
  • CM Services for the Nassau County Police Eighth Precinct
    READ MORE
  • Jerome Park Reservoir
    READ MORE
  • Replacement of West Street Bridge
    READ MORE
  • Construction Of New Grit Chamber
    READ MORE
  • Outerbridge Crossing Biennial Inspection
    READ MORE
  • Corrective Maintenance of Multiple Bridges in Bronx & Manhattan
    READ MORE
  • Newark Liberty International Airport
    READ MORE
  • REI Services for Reconstruction of Corona Plaza
    READ MORE
  • Construction Inspection of Reconstruction of Saw Mill River Parkway
    READ MORE
  • ITS System Preventive Maintenance
    READ MORE
  • Signage on GCP & LIE
    READ MORE
  • REI Services for Sanitary and Storm Sewers in Water Edge Drive
    READ MORE
  • CM Services for Phase I of the Second Avenue Subway
    READ MORE
  • NYCOMB Asset Management Program
    READ MORE
  • REI Services for the Reconstruction of South Ave
    READ MORE
  • Lincoln Tunnel HOT Lane Study
    READ MORE
  • Route 35 Bridge over Cheesequake Creek
    READ MORE
  • Staten Island Ferry Terminals
    READ MORE
  • Cross Bay Veterans Memorial Bridge
    READ MORE
  • REI Services for Storm Sewer Extensions at 61st Avenue
    READ MORE
  • MTA LIRR Inspection Program
    READ MORE
  • Tappan Zee Bridge
    READ MORE
  • Hugh L. Carey Tunnel
    READ MORE
  • Design and Construction Support Services for the Rehabilitation of Nine Stations and Line Structure on the Sea Beach Line
    READ MORE
  • NYCDEP Asset Management Program
    READ MORE
  • Marine Parkway Gil Hodges Memorial Bridge
    READ MORE
  • Staten Island Ferry Rack System
    READ MORE
  • Managed Use Lane (MUL) Study
    READ MORE
  • Kosciuszko Bridge Final Design Services
    READ MORE
  • JFK Airtrain Howard Beach Line
    READ MORE
  • PATH Tunnels Condition Survey
    READ MORE
  • Wards Island Wastewater Treatment Plant
    READ MORE
  • Bridge Deck Replacement
    READ MORE
  • Newark Marine Terminal Inspection
    READ MORE
  • Biennial Inspection of the Verrazano-Narrows Bridge
    READ MORE
  • Rehabilitation of Ramps at Staten Island Ferry Terminal
    READ MORE
  • Croton Water Filtration Plant
    READ MORE
  • West 125th Streetscape
    READ MORE
  • NYSDOT Term Contract
    READ MORE
  • REI Services for Sanitary Sewers in Twombly Avenue Restoration
    READ MORE
  • Reconstruction of Beekman Street
    READ MORE
  • MTA Building Annex at Marine Parkway
    READ MORE
  • Condition Survey of Multiple Buildings at JFK Airport
    READ MORE
  • Gowanus Expressway
    READ MORE
  • NYCSCA BCAS New York City
    READ MORE

About Us

Over the past decade, SI Engineering (SIE) has built a strong reputation in delivering a wide range of projects for our clients in the public and private sectors. Our diverse staff of over 45 talented engineers, inspectors, and technical and construction professionals have brought their expertise to local community improvement projects to large high profile mega million dollar infrastructure projects.

We strive to maintain the highest standards while exceeding client’s expectations at all levels.

READ MORE