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A leading full-service engineering firm renowned for our trusted, high quality, and innovative approach to solving complex challenges.

Fulton Avenue Bridge and South Street Design Build Bridge Replacement

Teaming with ECCO III, McLaren’s Bridge, Highway + Rail group was awarded MTA Construction & Development Contract 68632 to deliver design-build services for replacing the Fulton Avenue and South Street bridges in Mt. Vernon, NY. These structures carry vehicular and pedestrian traffic over the Metro-North Railroad.

The project replaced both bridges with modern structures designed to improve traffic flow, enhance pedestrian circulation, and provide improved access to Metro-North Railroad’s Mount Vernon East Station.

Multidisciplinary Design-Build Services for Bridge + Infrastructure Upgrades

As the Design-Builder, our team delivered comprehensive planning, design, and engineering services across multiple disciplines:

  • Geomatics – Performed topographic and right-of-way surveying.
  • Civil – Designed Roadway grading, drainage, signing, striping, traffic signals, lighting, utility plans, and erosion control measures. Developed Work Zone Traffic Control plans maintain safe traffic flow during construction.
  • Geotechnical – Conducted a Geotechnical Exploration Program and designed improvements to the existing substructures
  • Bridge – Designed the replacement superstructures and bearings and retrofitted the abutments to increase service capacity.
  • Construction Engineering – Provided temporary works and SOE design to support ECCOIII.
  • Additional Services – Delivered landscape architecture, utility coordination, field investigation, and permit application management. Also provided post-design construction support services.

All work met rigorous NYSDOT, AASHTO, and AREMA standards for safety, performance, and longevity.

Fulton Avenue Bridge Replacement

The 130-year-old Fulton Avenue Pratt truss bridge aged past repair. Safety reports conducted by the Department of Transportation had previously uncovered serious issues compromising Fulton Avenue Bridge’s structural integrity. This resulted in a forced closure to vehicular traffic in 2022.

McLaren designed a continuous composite two-span steel multi-girder bridge featuring new decks, sidewalks, and parapets. To strengthen and reuse the existing masonry abutments the team incorporated micropiles and tiebacks into the design. A new pier at Fulton Avenue, anchored with rock supports was also designed to meet current seismic standards.

Construction Engineering Details

As our bridge team designed a modern replacement structure, our construction engineers provided crucial support for the methodical removal of the original bridge. Using innovative techniques such as a self-propelled modular transporter (SPMT), the team slid the bridge span 150 feet from its original location, allowing for its safe disassembly and demolition.

Join our construction engineers on-site at the Fulton Avenue Bridge as they walk you through the precision engineering, innovative temporary works, and intricate planning behind moving a 127-year-old structure for demolition.

South Street Bridge Replacement

The 130-year-old South Street plate girder Bridge had fallen into disrepair. McLaren designed a new single-span steel girder structure with upgraded decks, sidewalks, and parapets. To reinforce and retain the existing masonry abutments, the design incorporated micropiles and tiebacks. The project also included replacing the retaining wall along Pearl Street.

We’re excited to share that McLaren Engineering Group is now part of KCI Technologies Inc., a 100% employee-owned engineering, consulting, and construction firm.

Our commitment to excellence continues with the added strength of KCI’s full range of engineering and consulting services.