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Scope of Work:
· The I-87 project consisted of the rehabilitation of 12 miles of interstate highway, including adjacent drainage structures.
· The project location required disturbing 12,500 SF of wetlands in order to access work areas where drainage structures were repaired or new structures installed. All disturbed wetlands were restored to pre-construction conditions.
· Culvert work on the project site consisted of lining some culverts with 2,400 M of polyester or HDPE pipe lining; replacing other culverts; replacing all end sections; cleaning and video taping larger culverts and placement of 1,700 CM stone at all pipe inlets and outlets.
· Because the project was located in the AdirondackPark and subject to stringent environmental and erosion controls, the new shoulder drainage system included curbing to direct storm water to drainage inlet structures leading to outlet pipes located near the top of the slope. The water was directed down slope over gabions to infiltrate and dissipate flows before reaching the toe of the slope. Over 1900 CM of stone was used to fill the 107 gabion structures.
· Cofferdams, turbidity curtains and silt fencing were used to control erosion and keep sediment out of streams and rivers.
· Approximately 12,000 CY of waste material was generated by the project and disposed of within the median of Interstate 87, an approved waste disposal site.
· Major work items included cold milling over 375,000 SM of asphalt, some of which was recycled as shoulder back-up; excavating out a frost heave area of the roadway; reconstruction of shoulders; construction of 59 cofferdams and the installation of 35,000 M of new rustic box beam guide rail.
· The full pavement width was topped with 47,000 MT of asphalt binder followed by 46,000 MT of top course asphalt. These materials were placed with a company owned Material Transfer Vehicle. (see top photo)
· Stringent Quality Assurance (QA) specifications addressing compaction and smoothness tolerances were achieved.
· Traffic control and flow required both daytime and permanent lane closures
· This was a two phased project with the northbound lane completed in 2006 and work in the southbound lane completed on December 14, 2007. |
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