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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 better access to Metro-North Railroad’s Mount Vernon East Station, adjacent to Fulton Avenue.

As the Design-Builder, our team provided planning, design, and engineering services.

Bridge Repair

The scope of the design build project covers multiple engineering disciplines. McLaren’s geomatics team performed the topographic and right-of-way surveying for the project. McLaren’s civil team is performing roadway design, including grading, drainage, signing, striping, traffic signals, lighting, utility plans, and erosion control. Work Zone Traffic Control plans were developed to manage traffic during construction. A Geotechnical Exploration Program was conducted for both bridges and improvements to the existing substructures were designed. McLaren’s bridge team also designed the replacement superstructures and bearings for both bridges and retrofitted the abutments to provide an increase in service capacity. A new pier was also designed. The project also includes landscape architecture, utility coordination, field investigation, and permit application management. McLaren provided Construction Engineering for temporary works and SOE to support ECCOIII. McLaren is providing post-design construction support services.

This project complies with NYSDOT/AASHTO and AREMA specifications .

Fulton Avenue Bridge

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.

A continuous composite two-span steel multi-girder bridge was designed by McLaren for the Fulton Avenue bridge replacement. The new bridge features 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 to meet current seismic standards, was also included.

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.

Project Insights

Listen to our construction engineers share their firsthand experiences and insights into the complexities of this transformative project from the field.

South Street Bridge

The 130-year-old South Street through plate girder Bridge had fallen into disrepair. McLaren designed a single-span steel 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. The retaining wall at Pearl Street was also replaced.

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.