The 7,296 billion VND project under the Hai Van Pass is divided into 2 stages. 

Construction work on the new Hai Van Tunnel

The 1^st stage focuses on upgrading the existing main Hai Van Tunnel and a section of National Highway 1A.  The upgrade of the highway section has already been completed, whilst the work on the main tunnel is expected to be completed in April.

The 2^nd stage of the project involves expanding the over 6.2 km-long, 2-lane emergency tunnel, which lies parallel to the existing main tunnel, into a 4-lane tunnel, and building a new 2.1 km-long stretch of road to Thua Thien-Hue Province’s Lang Co Town, and a 4.3 km-long roadway leading to Da Nang.  Work on this stage started in April last year and is progressing well.  It is expected to be completed in December 2020.

Currently, the project’s Site Clearance Board is accelerating the site clearance  work, and the bypass expansion project on the southern and northern sides of the new Hai Van Tunnel.