Bridge, Highway & Rail Projects

Recycled Plastic Lumber Truss Bridge – Hudson River Interpretive Trail

RPL Truss Bridge – Hudson River Interpretive Trail.jpg
Project Overview: 
McLaren designed a single lane bridge at the Hudson River Interpretive Trail made entirely of recycled plastic lumber (RPL). The addition of this bridge at the park will permit improved access to the Hudson River side of the trail by hikers, visitors, and maintenance vehicles. The bridge has a 30-foot-long main span that crosses a tidal estuary.
McLaren's Role: 
McLaren engineers designed the RPL truss superstructure bridge. The structure is capable of supporting H-15 live load capacity. The recycled material used to construct the bridge is equivalent to 70,000 plastic one-gallon milk cartons. Design of a bowstring truss configuration represents an optimal use of the material. The bridge will be monitored over the next few years to evaluate the long-term behavior of the material and to confirm the algorithm used to prepare the design. McLaren was ultimately responsible for the design of bowstring truss bridge, construction supervision, and monitoring of the H-15 truckload deflection.
Service: 
Bridge Design
Service: 
Construction Administration
Service: 
Advanced Materials Application
Location: 
New Baltimore, New York
Client: 
New Baltimore Conservatory
Project Type: 
Bridge Design
Role: 
Prime
Contract Period: 
2000
Construction Cost: 
N/A
Image: 
13a RPL Truss Bridge.jpg

Rockland County Culverts

Rockland County Culverts
Project Overview: 
McLaren provided a detailed confined space inspection, load rating analysis, preliminary hydraulic analysis and structural evaluation of over 110 culverts located throughout Rockland County.
McLaren's Role: 
Ultrasonic Thickness Gauge measurements were taken to measure the deterioration of the culverts that ranged in size from 20 foot span steel stringer-type to 4 foot span corrugated metal type. A computerized program was developed and used to generate reports in spreadsheet format. The database incorporated rating criteria from the Federal Highway Administration (FHWA) and NYSDOT. Each culvert was evaluated based on specified rating criteria, which generated a “score” or ranking based on its overall condition. Various components of the culverts that required further rehabilitation or upgrading were noted. All of the culverts inspected were organized into a prioritized listing by overall ranking. This summary was provided to the County for aid in capital planning and scheduling of repairs. McLaren also performed the initial inspection in 1994.
Service: 
Culvert Inventory
Service: 
Load Rating Analysis
Service: 
Structural Evaluation
Service: 
Hydraulic Analysis
Location: 
Rockland County, New York
Client: 
Rockland County Highway Department
Project Type: 
Culvert Inspection
Role: 
Prime
Contract Period: 
1995, 1999
Construction Cost: 
N/A

Ritz Carlton Condominiums/Hotel

Ritz Carlton Rendering
Project Overview: 
The Ritz Carlton Condo/Hotel, which will sit on 230 acres, is a seven-story residence/resort located on Rose Island. The building will include a hotel, marina, estate homes, condominiums, town homes and amenities including a spa, restaurant and pools, bringing the its total size to approximately 496,674 square feet.
McLaren's Role: 
McLaren is providing structural and bridge engineering services that include design of concrete frame with post-tensioned slab for hotel; design of masonry columns and walls, concrete beams and hollow core roof planks for utility buildings; design of marina bridges; assessment of construction materials and methods; design of spread footing and pile foundations; and structural design of lightgauge metal framework for canopies and soffits. Project challenges include hotel foundation choice between piles or spread footings based on assessment of storm water surge and armored beaches; misaligned concrete shear walls and concrete columns in the hotel and the utility buildings to accommodate architectural design; and minimal use of structural steel due to the highly corrosive environment.
Service: 
Site/Civil Engineering
Service: 
Drainage Analysis
Service: 
Drainage Design
Location: 
Rose Island, Bahamas
Client: 
Garcia Stromberg/Ritz Carlton
Project Type: 
Site Planning & Design
Role: 
Prime
Contract Period: 
2006-Present
Construction Cost: 
N/A

Walkway Over the Hudson - Poughkeepsie-Highland Railroad Bridge Conversion

Walkway over the Hudson Poughkeepsie-Highland Railroad Bridge Conversion.JPG
Project Overview: 
McLaren was retained to provide bridge inspection services for the conversion of the Poughkeepsie-Highland Railroad Bridge into a park called the "Walkway over the Hudson". The bridge was originally built in 1889, and after 85 years of carrying commuter and freight traffic over the Hudson, a portion of the bridge burned down in 1974, seemingly condemning it to demolition. Walkway Over the Hudson seeks to preserve this historic bridge and hopes to open a new public park in time for the 400th anniversary of Henry Hudson sailing up the eponymous river in 2009.
McLaren's Role: 
McLaren performed an underwater inspection of the four piles of the bridge in the Hudson River as well as of the piers above the waterline. In addition, McLaren performed a full climbing inspection of the above water structural steel trusses, and will now assist in designing the conversion of the railroad bridge into one that accommodates pedestrian traffic. Elevators are also being designed to make the bridge (which stands over 200 feet above the river) accessible from the Hudson shoreline.
Service: 
Climbing Inspection
Service: 
Underwater Inspection
Service: 
Bridge Inspection and Evaluation
Service: 
Structural Analysis
Service: 
Bridge Repair Design
Service: 
Pier Repair Design
Location: 
Poughkeepsie, New York
Client: 
Walkway Over the Hudson / Bergmann Associates
Project Type: 
Bridge Design
Role: 
Subconsultant
Contract Period: 
2006-2009
Construction Cost: 
$25,000,000 (Est.)
Image: 
2a Poughkeepsie.jpg
Image: 
2b Poughkeepsie.jpg
Image: 
2c Poughkeepsie.jpg

NYSTA Canal Structure Inspections

NYSTA Canal Structure Inspection
Project Overview: 
McLaren is providing underwater inspection and assessment of 90 barge canal structures for the New York State Thruway Authority along the Albany to Buffalo segments of the historic New York State Waterway Canal System. Structures included locks, guard gates, fixed crest dams, moveable dams, tainter gates, spillways, terminals, docks, guide structures, and culverts.
McLaren's Role: 
McLaren was responsible for these underwater inspection and assessment services for three term contracts. For each contract, comprehensive reports were prepared including underwater photo documentation, sketches, and a summary of results of findings. Inspections were conducted in accordance with the NYSDOT Bridge Diving Inspection Manual, and the NYSTA Draft Specification for Bridge Diving Inspection and Fathometer Survey Manual.
Service: 
Underwater Inspection
Service: 
Structural Assessment
Location: 
Upstate, New York
Client: 
New York State Canal Corporation for the New York State Thruway Authority
Project Type: 
Canal Inspection
Role: 
Prime
Contract Period: 
1996-1997;1998-1999; 2003-2005
Construction Cost: 
N/A
Image: 
42a - NYSTA Canals.jpg
Image: 
42b - NYSTA Canals.jpg