DOMESTIC PROJECTS

Nguyen Trai Bridge crosses the Cam River, is a key traffic project being built in Hai Phong city. The bridge is located on the route connecting the city center with the North Cam River urban area and the seaport area. The project has special significance in improving the transport infrastructure system, promoting urban development, and improving the transport and logistics capacity of the entire Northern region. The bridge has a total length of about 1,476m. The main bridge is a 550m long cable-stayed bridge. The width of the main bridge is 26.5m, while the lead bridge has a width of 23.5m. The bridge deck is arranged with 4 lanes for motorized vehicles and 2 pedestrian curbs. The project is designed with 2 towers 111m high, bearing the image of sails reaching out to the big sea, symbolizing the aspiration for development and integration of the city. IIA's scope of work includes supplying materials, fabricating steel towers and performing tower pillar welding at the construction site.

May Chai Bridge crosses the Cam River, connecting the central area of Hai Phong city with Vu Yen Island, which is being planned to be developed into a high-class eco-urban complex, resort and entertainment. The bridge has a total length of about 1,434m, of which the cable-stayed bridge is 370m long. The width of the bridge reaches 21m, including 4 lanes for motorized vehicles and 2 pedestrian curbs. The main bridge uses a double-sided cable-stayed structure, with a span scheme of 85+200+85m, with a modern and strong architectural style. IIA is in charge of supplying materials, fabricating steel beams and steel cores of tower pillars, erecting, welding and painting finishing directly at the construction site

Nguyen Hoang Bridge crosses the Huong River, contributing to the completion of Hue City’s third ring road. The project plays a vital role in easing traffic congestion on National Highway 1A and downtown routes, while promoting economic growth, tourism, and connectivity between the city’s satellite urban areas. The bridge is approximately 380m long and designed as a steel arch bridge with 5 girder spans. The total width is 43m, including 2x3 car lanes each 3.5m wide, 2 motorbike lanes 3.5m wide, safety strips in each direction, and a 3m-wide pedestrian lane. The scope of IIA's work includes supplying materials, fabricating steel girders and steel arches.

Tran Hoang Na Bridge spans the Can Tho River, connecting Ninh Kieu District with Cai Rang District and contributing to the development of the city’s urban transportation network. The project plays a key role in linking the city center with the southern urban area of Can Tho and National Highway 1A, thereby promoting economic development, tourism, and attracting investment to the region. The bridge is 586.9 meters long, with a main span width of 23 meters, accommodating four traffic lanes. The main bridge is designed as an arch bridge with three steel structure spans, with a span configuration of 49.25+150+49.25 meters. The approach bridge uses super T girders made of prestressed reinforced concrete. IIA’s scope of work includes supplying materials and fabricating steel girders and steel arches.

Ba Son Bridge (formerly known as Thu Thiem 2 Bridge) spans the Saigon River, connecting District 1 with the Thu Thiem New Urban Area (Thu Duc City), contributing to the completion of the urban traffic network and promoting socio-economic development in the eastern part of Ho Chi Minh City.​The bridge has a total length of approximately 1,465 meters, with the main bridge section measuring 885.7 meters. The deck width is 28 meters, accommodating six traffic lanes (four for automobiles and two mixed-use lanes), along with pedestrian walkways on both sides. The main span is 200 meters long, featuring an asymmetrical cable-stayed design with a 113-meter-high arched pylon inclined towards Thu Thiem, creating a distinctive architectural highlight for the city. IIA’s scope of work includes supplying materials, fabricating steel girders and pylon cores, and performing erection, welding, and painting at the construction site.

The Hanoi - Ho Chi Minh City railway line, along with National Highway 1, is the country's most important transport route, completed and put into use in 1936. After nearly 100 years of operation, the Hanoi - Ho Chi Minh City railway line has seriously degraded, especially the bridges. The project to improve the safety of railway bridges on the Hanoi - Ho Chi Minh City route was invested in with the aim of building new bridges to replace old and weak bridges, renovating the railway section at both ends of the bridge, contributing to improving safety during operation, shortening train running time and operating costs. The project includes the construction and upgrading of 44 bridges, construction of Ninh Binh station and related items. IIA fabricated steel truss bridges, steel arch bridges, and steel deck girders for this project

Nhat Tan Bridge spans the Red River. The bridge plays a crucial role in connecting the city center with Noi Bai International Airport, thereby promoting economic and social development in northern Hanoi. ​The bridge has a total length of 9.17 km, with the main bridge section measuring 3.9 km and the approach bridge 5.27 km. The deck width is 33.2 m, comprising four lanes for motor vehicles, two bus lanes, two mixed-traffic lanes, a central divider, and pedestrian walkways. Designed as a continuous cable-stayed bridge with five diamond-shaped towers and six cable spans, the structure symbolizes Hanoi's five ancient city gates. In 2015, the Nhat Tan Bridge received the JICA President Award, recognizing its significant contributions to Vietnam's socio-economic development and the cooperative relationship between the two nations.​ IIA’s scope of work included fabricating and erecting steel girders, fairings, bridge handrails, and inclined supports.