A second sub-tunnel was broken through on 27 December at the A Luoi hydropower project, located on the A Sap River in Thua Thien Hue Province, Vietnam following 1.8 miles (2.9km) of excavation between the two sub-tunnels.

Cavico was awarded the contract for the excavation of the tunnel as well as four sub-tunnels, a surge tank, a vertical shaft and an access road by Central Hydropower Joint Stock in 2007. The project was projected to provide Cavico with USD 53M in revenue. The 7-mile (11.3km) long, 16-foot (4.9m) headrace tunnel is the longest, and considered to be the most sophisticated tunnel in Vietnam.

Upon completion the 170MW power plant will generate 686MKWh of power annually for the region.

“We are pleased to achieve another breakthrough on the A Luoi Hydropower project,” commented Mr. Hai Thanh Tran, vice president of Cavico. “Our efficient, highly skilled team continues to deliver top-quality work on this complex project. We remain focused on completing this project in the safest and most timely manner to generate the highest possible gross profit for our shareholders.”

The first sub-tunnel breakthrough was achieved in August 2010.