Cavico has announced the complete break through of the main tunnel at the Dong Nai 4 hydropower project. The tunnel is 2.9 miles (4.7km) long and spans 30.2 feet (9.2m) in diameter.

The contract was awarded by the current Vietnamese prime minister, Nguyen Tan Dung in 2007. The plant, located in the Bao Lam district of Lam Dong province, has the widest tunnel in Vietnam. The contract was valued at USD 26.6M when signed in 2007. The entire project has cost the state-owned client, Electricity of Vietnam (EVN) around USD 301M.

“We are pleased to achieve this major milestone at the Dong Nai 4 hydropower project,” commented Mr. Hai Thanh Tran, vice president of Cavico. “This is one of the country’s most critical hydropower projects, and EVN is one of Cavico’s most important strategic clients. We are proud of our recent accomplishments. Construction at the Dong Nai 4 plant continues on schedule, and we remain focused on concreting and completing the works in a timely and efficient manner.”