1. Which of the following bridges connects the two provinces of Nghe An and Ha Tinh ?

  • My Thinh Bridge
  • Yen Xuan Bridge
  • Xuan Duong Bridge
  • Cua Nhuong Bridge
Exactly

The Yen Xuan Bridge is one of five bridges spanning the Lam River, connecting the provinces of Nghe An and Ha Tinh. It is a 3.6km long bridge, including nearly 1.9km of bridge section and approximately 1.4km of approach roads at both ends, with a width of 9m. The project had an investment of 730 billion VND and was inaugurated in 2016. After completion, the bridge has addressed the transportation needs of more than a dozen communes in the two provinces of Nghe An and Ha Tinh – which were previously considered "isolated islands" during heavy rains and floods.

2. What was the first road bridge built across the Lam River?

  • Cua Sot Bridge
  • Ben Thuy Bridge I
  • Hung Duc Bridge
  • Ho Do Bridge
Exactly

Ben Thuy I Bridge is 630.5m long and 12m wide, consisting of 13 spans, connecting Ben Thuy Ward, Vinh City (Nghe An province) with Xuan An town, Nghi Xuan district (Ha Tinh province) in the North-South direction. Construction began in 1986 and it was inaugurated in 1990. It was the first road bridge across the Lam River and the second largest in the country, after Thang Long Bridge in Hanoi , which was built after 1975.

3. Which bridge has just been completed, connecting the two provinces of Nghe An and Ha Tinh?

  • Hung Duc Bridge
  • Nui Do Bridge
  • Hoa An Bridge
  • Nguyet Vien Bridge
Exactly

The Hung Duc Bridge, completed in June 2024, is part of the Dien Chau - Bai Vot expressway. With a total investment of over 1,300 billion VND, the bridge's main section spans the Lam River, connecting the northern bank in Hung Nguyen district (Nghe An province) and the southern bank in Duc Tho district (Ha Tinh province).

Construction began in May 2022. The bridge has a total length of nearly 4.1 km with 90 spans, a width of 17.5 m with 4 lanes, a rigid median divider, and a design speed of 80 km/h. This is the longest river crossing bridge on the entire North-South Expressway.

This is the fifth bridge connecting the two banks of the Lam River, contributing to promoting trade and economic development in Nghe An and Ha Tinh provinces, following the Ben Thuy I and II, Yen Xuan, and Cua Hoi bridges.

4. Of these five bridges, which one has a lotus bud shape resting on concrete pillars?

  • Cua Hoi Bridge
  • Ben Thuy Bridge I
  • Ben Thuy II Bridge
  • Yen Xuan Bridge
Exactly

The Cua Hoi Bridge is a 22-pillar bridge with a distinctive architectural feature: a lotus bud-shaped structure atop a concrete pillar. The bridge is 5.2 km long, with the main section measuring 1.7 km and a width of 18.5 m, while the approach bridge is 16 m wide. On the Nghe An side, the structure is located in Nghi Hai ward (Cua Lo town), while the other end is in Nghi Xuan district (Ha Tinh province). Construction began in February 2019 with a total investment of 950 billion VND. The bridge was inaugurated in 2021.

5. How many kilometers long is the Lam River?

  • Over 100km
  • Over 300km
  • Over 500km
  • Over 700km
Exactly

The Lam River originates in the Xiangkhoang Plateau of Laos, its main section flowing through Nghe An province, its final section merging with the La River in Ha Tinh province and emptying into the Gulf of Tonkin at Cua Hoi. The river is approximately 520 km long in total, with about 360 km flowing through Vietnam. It flows in a northwest-southeast direction, turning north near the sea. Several artificial tributaries, such as the Dao River, draw water from the Lam River.