The Year in Infrastructure 2007 - (Page 54) ciVil rOad infrastructure Planning, Design, and Construction of Peripheral Ring Road for Bangalore City india international infrastructure finalist The $185 million Peripheral Ring Road project encompasses the southern part of Bangalore City, India, connecting seven major radial roads consisting of three national highways, three state highways, and an expressway. The proposed 41-kilometer access-controlled peripheral road is a four-lane highway with a median of 11.4 meters and expandability to six lanes. Using MXROAD, STAAD.Pro, MicroStation GeoGraphics, and other Bentley solutions, the firm was able to calculate alignment on virgin land with the least impact on the environment, satisfy the requirements of full access control, test alternatives for horizontal and vertical alignment quickly, generate drawings automatically, perform surface analysis, and the list goes on. Whether a complex interchange design, alignment design, profiles, cross sections, drainage design, or earthwork volumes, the project team used one platform from design to construction. Savings from this approach totaled $11.9 million. Norra Länken sWecO finalist Norra Länken is a three-kilometer, four-lane highway tunnel in northern Stockholm, Sweden. It is the next link in the circular highway system already underway around the city. The estimated construction time is eight years and estimated cost is $1 billion. This was the first job where SWECO’s client, the Swedish Road Administration, specified in the contract that all design be done in 3D, so one of the essential goals for this project was to develop a procedure for 3D design that could link all design disciplines. Engineers and designers from the various disciplines worked on their preferred CAD platform, including MicroStation and AutoCAD. MicroStation then provided the necessary interoperability to reference DGN and DWG files to one 3D master file. 54 ThE YEAR IN INFRASTRUCTURE 2007
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