Solutions From Concept To Completion
Structural Engineering
Site Solutions From Concept To Completion
Civil Engineering
Solutions Where Land Meets Water
Marine + Coastal
Solutions From Procurement To Completion
Construction Engineering
Structural + Mechanical Specialists
Entertainment Engineering
Consultation, Design + Inspection
Facade + Building Envelope
Soil + Foundation
Geotechnical Engineering
Investigation + Litigation Support
Forensic Engineering
Arts + Entertainment
Live Performances
Museums + Art Displays
Pop-Ups
Signage
Studios + Sound Stages
TV + Film Production
Theaters
Theme Parks + Playplaces
discover
Education
Colleges + Universities
Private + Specialty Schools
Public K-12
discover
Energy
Solar Energy
Transmission Infrastructure
Wind Energy
Oil + Gas
discover
Government
Municipal
State
Federal
discover
Healthcare
Senior Care
Hospitals
Outpatient Facilities
discover
Industrial
Heavy Industrial
Warehouse + Distribution Centers
Industrial Ports + Terminals
discover
Ports + Coastal
Berths, Piers + Wharves
Bulkheads
Esplanades
Ferry Landings, Ship Terminals
Floating Structures
Ports + Terminals
Marinas + Breakwaters
Transfer Stations
discover
Public Infrastructure
Bikeways + Trails
Garage + Parking Facilities
Park + Recreational Spaces
Streetscapes
Utility Infrastructure
Water + Wastewater
discover
Real Estate Development
Commercial
Community Facilities
Mixed-Use
Multifamily Residential
discover
Transportation
Airports
Bridges
Ports + Terminals
Rail Transportation
Roads + Highways
Ropeway + Linear Infrastructure
discover
Floating Harbor Wetland
Multimodal Processing Plant
416 + 420 Kent Dynamic Highrise
Wittpenn Bridge
Tiffany Crane
LaGuardia Airport Terminal B
NYC Ferry
Orlando Airport LED Displays
A leading full-service engineering firm renowned for our trusted, high quality, and innovative approach to solving complex challenges.

Five Arches Bridge Replacement Construction

Our team is working with ECCO III on the replacement of the now structurally deficient Five Arches Bridge built in 1913, which carried Route 28A over Esopus Creek. The replacement bridge, currently under construction, spans 384-feet and sits atop two new piers driven directly into the bed of the creek.

Bridge Replacement Cofferdams

To support construction activities and facilitate installation of the bridge piles, our team first needed to design watertight cofferdams with pier footings built in dry concrete to shield the creek from the work area and protect the surrounding water quality. Hydrologic and hydraulic analysis based on the FEMA models were examined to ensure the design allowed water to flow through the foundations during ordinary flow conditions and avoid severe restriction to the channel.

Erection

For erection of the precast arch bridge segments, McLaren provided crane checks and rigging design, considering critical pick capacity, minimum radius picking conditions, auxiliary boom point line capacity, and geometry for construction access and constructability.

Crane Engineering

Our design eliminated the need for two cranes by utilizing the auxiliary line (aka whip line) in addition to the main boom line. This allowed us to use two rigging setups on one crane. This was important because the load had to be slowly transferred from one rigging setup to the other to allow the precast arch segment to rotate in the air into the upright setting position.

Five Arches Bridge Replacement Progress

The video was taken during a recent site inspection where one of our construction engineers was on hand to ensure a successful installation.

The Esopus Creek project is expected to be completed by 2025 (announcement from the NYCDEP).

Location
Orange County, NY
Year Completed
Ongoing
Submarkets
Client
ECCO III