[PDF] Knik Arm Crossing Project eBook

Author : Knik Arm Bridge and Toll Authority
Publisher :
Page : pages
File Size : 11,34 MB
Release : 2004
Category : Bridges
ISBN :

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Both "Southern Alignment" bridge alternatives for the Knik Arm Crossing (KAC) are capable of altering flow patterns in their immediate vicinity, as well as altering processes of sediment transport (erosion and deposition) in Knik Arm. The objective of this hydrology study was to implement analytical methods that would address all reasonable environmental concerns and estimate quantitative changes potentially induced by each alternative. The environmental impact evaluation process addressed effects of potential alterations of the following hydrodynamic processes: Tide stage (water surface elevation [WSE]) and phase (timing); current velocities (maximum and mean values) beneath the bridge and both north and south of KAC alignment; sedimentation environment (erosion and deposition); effects of accelerated flows around bridge abutment ends.

Author :
Publisher :
Page : 59 pages
File Size : 17,54 MB
Release : 2007
Category : Bridges
ISBN :

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Knik Arm is the northernmost branch of Cook Inlet. The Knik Arm Crossing Project is to construct a cost-affordable, vehicular toll bridge of about 2 miles across Knik Arm to join the Port of Anchorage and Port MacKenzie areas. Currently, only a single transportation corridor exists connecting the Anchorage and Mat-Su - the Glenn Highway. The Knik Arm Crossing Project will provide improved transportation infrastructure, vehicular access and connectivity and needed safety and transportation system redundancy. Given the potential traffic disruptions caused by ice and snow in winter, a comprehensive literature investigation on bridge antiicing and deicing technologies is critically needed. This report provides technical recommendations for viable and economic anti-icing and deicing technologies for the Knik Arm Bridge. Based on the literature data in similar latitude, duration and intensity of freezing, and the fact that the thermal method may reduce the use of chemical agents substantially, a combination of the chemical method with a Fixed Automatic Spray Technology and the thermal method is suggested to be the best approach based on the cost-effectiveness criteria.

Author :
Publisher :
Page : 558 pages
File Size : 39,43 MB
Release : 2012
Category : Continental shelf
ISBN :

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Describes the potential environmental impacts of the Proposed Final 2012-2017 Outer Continental Shelf (OCS) Oil and Gas Leasing Program (PFP), which establishes a schedule that is used as a basis for considering where and when oil and gas leasing might be appropriate over a 5-year period.