Bridge, Highway & Rail Projects

LIRR Bay Ridge-Bushwick Line Assessment

LIRR's line at East 83rd Street
Project Overview: 
McLaren was retained to provide an in-depth inspection and load rating analysis for this LIRR inspection contract, which included 23 undergrade bridges, 46 over grade bridges, the East Avenue Tunnel, and approximately 2,000 feet of retaining walls. Types of bridges inspected included steel deck girders, thru girders, concrete slab, and steel trusses.
McLaren's Role: 
Tasks included data collection, structural integrity evaluation, a materials testing program, and prioritization of structures. McLaren identified substandard conditions affecting the safety, serviceability and the life of the structures, ensured compliance with Article IX of the New York State Highway Law, and proposed solutions to eliminate heavy freight/speed restrictions. McLaren also rated live loads; obtained horizontal and vertical clearances; and identified constraints for double-stacked freight cars, identifying potential expansion and capabilities, identifying fatigue and seismic vulnerabilities.
Service: 
Structural Inspection
Service: 
Structural Analysis
Service: 
Load Rating
Service: 
Material Testing
Service: 
Underwater Inspection
Location: 
Brooklyn and Queens, New York
Client: 
Long Island Rail Road
Project Type: 
Bridge Line Assessment
Role: 
Prime
Contract Period: 
2003-2004
Construction Cost: 
N/A
Image: 
5a LIRR BR-Bush Cooper-Wyckoff Bridge.jpg
Image: 
5b LIRR BR-Bush East Avenue Tunnel.jpg
Image: 
5c LIRR BR-Bush Fresh Pond Yard.jpg

Croton Beach Road Extension

Road Extension at Brook Street
Project Overview: 
McLaren was retained by Metro-North Railroad to provide engineering services for the design of a road and tunnel extension to eliminate a grade crossing in a high-speed territory called Brook Street Grade Crossing. Brook Street crosses over three main tracks and two sidetracks of Metro-North’s Hudson Line in the Village of Croton-on-Hudson. The objective of this project was to eliminate the grade crossing by providing access to the waterfront from the Half Moon Bay Bridge. This required the design of an extension of Croton Beach Road from the tunnel to the Half Moon Bay Loop Bridge. With the elimination of the grade crossing, the new road is currently providing convenient and safer access to the waterfront.
McLaren's Role: 
McLaren performed a structural inspection of the tunnel and prepared contract documents for the extension of the tunnel and Croton Beach Road. Work included installation of a duct bank for a 13.2kv electric line, communication cable, water main, street lighting, pavement, guide rails, fencing, retaining walls, and landscaping.
Service: 
Tunnel Design
Service: 
Roadway Design
Service: 
Construction Inspection
Location: 
Croton-on-Hudson, New York
Client: 
Metro-North Railroad
Project Type: 
Roadway and Tunnel Design
Role: 
Prime
Contract Period: 
2002-2004
Construction Cost: 
N/A
Image: 
4a Croton Beach Rd. Ext..jpg
Image: 
4b Croton Beach Rd. Ext..jpg
Image: 
4c Croton Beach Rd. Ext..jpg
Image: 
4d Croton Beach Rd. Ext..jpg

ConnDOT Biennial Bridge Inspection

ConnDOT Biennial Bridge Inspection
Project Overview: 
McLaren was retained by the Connecticut Department of Transportation for a total of five cycles of its biennial bridge inspection program, which encompasses above and underwater inspection and assessment of bridges statewide. The first three cycles (1993-1994, 1995-1996 and 2001-2002) totaled 280 to 360 bridges. In its last two cycles (2005-2006 and 2007-2008), McLaren is providing engineering services for above and below water bridge inspections on 534 highway bridges and over 80 culverts statewide. Types of bridges inspected during all cycles include steel deck girders, thru girders, concrete slab, and steel trusses.
McLaren's Role: 
McLaren was responsible for supplying underwater inspection services, providing fathometric surveys, and preparing comprehensive reports (including database management, photographs, underwater video documentation, and assessment of data). All inspections conform to the National Bridge Inspection Standards (NBIS) and the ConnDOT’s Bridge Inspection Manual (BIM version 2.1, September 2001).
Service: 
Structural Inspection
Service: 
Structural Analysis
Service: 
Underwater Inspection
Service: 
Material Testing
Service: 
Fathometric Surveys
Location: 
Statewide, Connecticut
Client: 
Connecticut Department of Transportation
Project Type: 
Bridge Inspection
Role: 
Prime
Contract Period: 
2007-2008; 2005-2006; 2001-2002; 1995-1996; 1993-1994
Construction Cost: 
N/A
Image: 
10a ConnDOT Bridge Inspection.jpg
Image: 
10b ConnDOT Bridge Inspection.jpg
Image: 
10c ConnDOT Bridge Inspection.jpg

Amott Drainage Culvert Inspection and Rehabilitation

LIRR's Amott Drainage Culvert
Project Overview: 
For the Port Jefferson Branch of the LIRR, McLaren is providied site/civil engineering services for the rehabilitation of the Amott Drainage Culvert between mileposts 30.3 and 30.6. The culvert's drainage deficiencies resulted in a washout that undermined the supporting structure of the north track and caused a train derailment. The culvert system consists of a street level drainage easement and overflow catch basins, a concrete spillway, collection box, two 36-inch diameter pipes approximately 36-feet long parallel to each other and perpendicular to the railroad tracks, a discharge headwall and spillway outflow area.
McLaren's Role: 
Because the project required the construction of approximately 1,900 feet of trackside drainage adjacent to the railroad tracks, as well as a new or additional culvert at the existing Amott Culvert; McLaren conducted a geotechnical investigation to determine the bearing capacity and presence of weak soil strata. To minimize the occurrence of track outages, McLaren designed the construction to be completed in phases. The final drainage design required a minimum of maintenance, and extended the drainage system service life for at least 30 years.
Service: 
Site/Civil Engineering
Service: 
Drainage Analysis
Service: 
Drainage Design
Location: 
Woodbury, New York
Client: 
Long Island Rail Road
Project Type: 
Culvert Design Rehabilitation
Role: 
Prime
Contract Period: 
2006-2010
Construction Cost: 
$3,000,000 (Est.)
Image: 
27a - Amott Culvert.jpg