A list of Southeast Asia's longest bridges contains the longest finished bridges, elevated highways, under construction bridges, and proposed bridges.
- Sultan Haji Omar Ali Saifuddien Bridge - Brunei Darussalam
The Sultan Haji Omar 'Ali Saifuddien (SOAS) Bridge, which connects the Temburong area to Bandar Seri Begawan and spans 26.3 kilometers across Brunei Bay, opened to the public on March 17, 2020. Local commuters will be able to travel to the capital in less than 30 minutes thanks to the bridge. Travelers from Temburong had to take a 45-minute boat ride across the bay or drive two hours through Sarawak's Limbang and four border crossings to reach the capital before the bridge opened.
- Sultan Abdul Halim Muadzam Shah Bridge - Malaysia
The Second Penang Bridge, also known as the Second Penang Bridge, is a 24-kilometer (14.9-mile) bridge that connects Penang Island with the Malaysia Peninsula. It is the region's largest civil engineering project in the last 20 years. It consists of 55-meter (180-foot) span modules of precast segmental concrete maritime viaducts and a 475-meter cast-in-situ concrete cable-stayed bridge (1,558 feet).
The Second Penang Bridge is exposed to a hostile marine environment and is prone to the cruel elements of nature, such as earthquakes, potential tsunamis, and wind, to name a few. These obstacles were addressed by rigorous planning and design, resulting in one of the greatest sea-crossing projects in recent years.
- Penang Bridge - Malaysia
The Penang Bridge is a toll bridge and controlled-access roadway that spans 13.5 kilometers (8.4 miles) in Malaysia's state of Penang. Crossing the Selatan Strait, the bridge connects Butterworth on the mainland with Gelugor on the island. The bridge, was opened on September 14, 1985, is the first traffic link between the peninsula and the island. With a total length of 8.4 kilometers, the bridge is known as Malaysia's second-longest and Southeast Asia's fifth-longest bridges by total length (5.2 miles).
- Bhumibol Bridge - Thailand
The Bhumibol Bridge, commonly known as the Industrial Ring Road Bridge, connects southern Bangkok with Samut Prakan Province and is part of the 13-kilometer-long Industrial Ring Road. It is a royal initiative launched by King Bhumibol Adulyadej to alleviate traffic congestion in Bangkok and its environs, particularly in the industrial sector surrounding Khlong Toei Port in southern Bangkok and Samut Prakan Province. The bridge spans the Chao Phraya River twice, with two remarkable cable-stayed spans of 702 and 582 meters, respectively, supported by two diamond-shaped pylons of 173 and 164 meters in height. Another road rises to connect the two spans at a free-flowing junction suspended 50 meters above the ground.
- Bali Mandara Toll Road - Indonesia
The Bali Mandara Toll Road was Bali's first toll road, as well as Indonesia's first floating toll road. The highway, which has been named the world's most beautiful highway, stretches 12.7 kilometers above sea level and is unusual in that it is the only toll road featuring bike lanes on both sides of the road.
The construction of this toll road began in March 2012 and was finished in May 2013. The construction of a toll road across the sea can be summarized in a few words. Because the majority of the tolls are hung over the water, not much land should be released. The Bali Mandara Toll Road connects Benoa, Ngurah Rai, Tuban, and Nusa Dua, making travel easier.
- Cebu-Cordova Bridge - Philippines
To put things in context, the San Juanico Bridge is 2.1 kilometers long and has been the Philippines' longest bridge since 1973. The Cebu-Cordova bridge, commonly known as the Cebu-Cordova Link Expressway or CCLEX, is 8.9 kilometers long, dwarfing the San Juanico Bridge substantially.
The project, which was awarded in 2017 by the Cebu Cordova Link Expressway Corporation (CCLEC), a subsidiary of Metro Pacific Tollways (MPTC), entails the design and construction of a 650-meter cable-stayed bridge as the main structure, with a main span of 390 meters between pylons, over the Port of Cebu's entrance. Several viaducts and a highway segment atop a 5.2-kilometer embankment are part of the new infrastructure.
- Thanlwin Bridge - Myanmar
Thanlwin Bridge, also known as Mawlamyine, is located in Mon State in Myanmar's south. It passes via three river confluences. The Thanlyin River, Gyaing River, and Attayan River are the three rivers. It connects Mawlamyine City and Moke Ta Ma City by road and rail. It has enhanced transportation in southern Myanmar, as well as the people's social and economic lives.
The bridge is 4.1 miles (6.6 kilometers) long, with a main bridge 1.5 miles (2.4 kilometers) long and a length over water of 1.3 miles (2.1 km). It opened on February 5, 2005, after starting construction on March 18, 2000.
- Pakokku Bridge - Myanmar
It is a railroad bridge in Myanmar's Pakokku town that spans the Irrawaddy River. The bridge is the longest in Myanmar and is part of the India–Myanmar–Thailand Trilateral Highway. It's a large crested bridge with a clearance area of 262 feet wide and 52 feet high. The Pakokku Bridge near Bagan, which spans the Ayeyarwady (Irrawaddy) River, is Myanmar's longest bridge (Burma). It's part of a route that connects India and Thailand through Mandalay.
- Đình Vũ – Cát Hải Bridge - Vietnam
A sea bridge that is over 5.44 km long, part of the Tân Vũ-Lạch Huyện Highway in the northern port city of Hải Phòng, was put becoming one of the longest of its kind in Southeast Asia. With a total length of 15.63km, the road begins at the intersection with Hà Nội-Hải Phòng Expressway and ends at the gate of Lạch Huyện Port.
Tân Vũ-Lạch Huyện Highway is expected to cut down travel time and reduce risks in transport by ferry and barge. It is also hoped to help boost Hải Phòng’s coastal economic development, attract investors to projects in Đình Vũ-Cát Hải Economic Zone, and promote tourism in the UNESCO-recognised Cát Bà Biosphere Reserve and neighboring areas.
- Suramadu Bridge - Indonesia
The Suramadu national bridge connects Java Island (near Surabaya) to Madura Island over the Madura Strait (in Bangkalan, exactly east Kamal). Suramadu Bridge is divided into three sections: the causeway, approach bridge, and major bridge. The Causeway was designed to link the construction of bridges by road on both sides of shallow seas. Approach the Causeway through the bridge that connects the main bridge and the Causeway. At the same time, the main bridge is made up of three sections: two 192-meter-long side spans and a 434-meter-long main span. This is also Indonesia's first toll bridge.