Da Nang city has submitted a detailed report outlining plans for the construction of two major infrastructure projects: a tunnel beneath the Han River and a tunnel under Da Nang International Airport, according to a report from Radio the Voice of Vietnam.

The proposed Han River tunnel will span approximately 1.67 km, beginning at Dong Da Street in Hai Chau district and ending at Van Don Street in Son Tra district. The total investment capital for the project is estimated at VND6.88 trillion ($269.2 million), with construction costs amounting to VND3.9 trillion (nearly $152.5 million).

To improve East-West connectivity through Da Nang International Airport, the central city's Department of Construction has proposed a 2.9 km tunnel project. The tunnel will connect Truong Chinh Street to Duy Tan Street and from Truong Chinh Street to the Western Ring Road 2.

This project includes two open-cut sections totaling 570 m, three box tunnel sections measuring 1,450 m, and a 900 m tunnel running beneath the existing airport runway.

Two options are being considered for the airport tunnel. Option 1 incorporates a Mass Rapid Transit (MRT) line sharing the tunnel with roadways, with an estimated investment of VND10 trillion ($391. 3 million). Option 2 excludes the MRT line, reducing the estimated cost to VND7.5 trillion ($293.4 million).