Cua Dai Bridge Cầu Cửa Đại
Coordinates	15°51′56″N 108°22′34″E / 15.865527°N 108.376184°E / 15.865527; 108.376184
Carries	Vehicles, Pedestrians
Crosses	Thu Bồn River
Locale	Quang Nam Province, Vietnam
Characteristics
Design	cantilever
Material	Prestressed concrete
Width	25.5 metres (84 ft)
Longest span	1,482 metres (4,862 ft)[1]
History
Construction start	August 31, 2009 (2009-08-31)
Opened	March 27, 2016 (2016-03-27)
Location

Cua Dai Bridge (Vietnamese: Cầu Cửa Đại), is a cable-stayed bridge that crosses the Thu Bồn River in Quang Nam Province, Vietnam.

In June 2009, a VND2 trillion (US$111 million) infrastructure budget was approved, which included resources allocated for the Cua Dai Bridge project. ^[2] In August 2009, a groundbreaking ceremony marked the start of construction on the bridge. ^[3]

Cua Dai was built using the balanced cantilever method made with concrete spans.^[4][5] The structure consists of prestressed reinforced concrete and reinforced concrete.^[1] At 150 meters, it has the longest cantilever span in Vietnam.^[6] The bridge is the longest in Quang Nam Province.^[7] By the completion of construction, the project would cost 3,450 billion VND.^[8] Cua Dai bridge was built as part of a larger 18,300 metres (60,039 ft) road project,^[3] which includes the 4,780 metres (15,682 ft) kilometer road from Hoi An, a 12,040 metres (39,501 ft) kilometer roads from Duy Xuyen District, and the 1,482 metres (4,862 ft) of the bridge itself.^[8]

In 2016, the bridge was open for traffic on a trial basis, establishing a direct route in Hoi An between Duy Xuyên and Thăng Bình districts. ^[9] Previous to the bridge's construction, local commuters were required to use the distant Tra Khuc II Bridge or embark on small boats to cross the wide Thu Bon River.^[10][4] Officials estimate that despite the districts being only 2km apart as the crow flies, motorists would travel 20 kilometers of distance by using the Tra Khuc II Bridge.^[10][11] The bridge has an expected lifespan of 100 years.^[11]

The bridge also serves as a major connection within a coastal road project that would go through North, Central, and Southern regions of Vietnam.^[12] The bridge expanded the maritime capacity of the provinces within Vietnam's Central region, including an expansion of Kỳ Hà Port. ^[13] In addition to reducing daily traveling time, the bridge is also serves a role in preventing storms and floods, aiding with emergency evacuation, and connecting the banks of the world heritage sites of Old Town Hội An and the Mỹ Sơn temple complex.^[6]