The scope of work for the Line 4 Expansion includes 135 kilometers (km) of 36-inch pipelines in three loops from Sherwood Park to Hardisty, Alberta. The Alberta Clipper segment includes 99 km of 36-inch pipeline from Hardisty to the Alberta/Saskatchewan border near Kerrobert, Saskatchewan. The work is scheduled for August 2008 to March 2009, with final pipeline right-of-way clean-up in summer 2009.

The Alberta Clipper project is a new 1,607 km oil pipeline from Hardisty, Alberta to Superior, Wisconsin. The Canadian portion of the project involves the construction and operation of facilities including approximately 1,078 km of new 36-inch diameter oil pipeline between Enbridge's Hardisty Terminal and the Canada - United States border near Gretna, Manitoba.

Randy Harl, President and Chief Executive Officer, commented, "We are pleased to have been selected for this significant work in Canada and look forward to working with one of the premier pipeline operators in North America. This award assures high utilization of our Canadian pipeline construction unit through the first quarter 2009. Canada continues to present attractive business opportunities for both our Upstream and Downstream segments, and this award reinforces our momentum in this important market."

Willbros Group, Inc. is an independent contractor serving the oil, gas, power, and refining and petrochemical industries, providing engineering, construction, turnaround and maintenance services to industry and government entities worldwide.