All automobiles, excluding oversized vehicles are permitted to travel only in one direction in the tunnel from Truong Chinh street to the National Highway No 22.

The two-lane tunnel is 445m long, 9m wide and 4.75m high. Meanwhile the second tunnel No 2 starting from Cu Chi District to the city’s center is 385m long and expected to begin the construction in the upcoming time.

The construction project of a double tunnel under An Suong Intersection has been invested with a total capital of VND514 billion (US$22 million).

The tunnels are to reduce traffic congestion at the city’s northwest gateway and solve traffic jam on the National Highway 1A, the National Highway No.22 and Truong Chinh Street.