SHENYANG, Jan. 14 -- A new bridge over the river border between China and the Democratic People's Republic of Korea (DPRK) is expected to open this year, local authorities said on Tuesday.

About 80 percent of work on the Yalu River Bridge is complete, according to the Transport Department of northeast China's Liaoning Province.

Construction began on the 3 km bridge at the end of 2010, and will cost 2.22 billion yuan (356 million U.S. dollars).

A joint project between the two countries, the bridge will have four two-way lanes upon completion, according to an agreement signed in February 2010. The new route is expected to boost communication and economic cooperation.

The only bridge connecting the nations was built in 1937. Trucks weighing more than 20 tonnes are not allowed on the one-way bridge, considerably restricting trade volume.