Construction—APAC—Vietnam—Bridges
The Lach Huyen Bridge: DYWIDAG Strand Post-Tensioning Systems
stabilize Vietnam’s longest Sea Crossing Bridge
The new Lach Huyen deep sea port near the city of Hai Phong in the Gulf of
Tonkin is one of the most important infrastructure projects that is currently
under construction in Vietnam. Lach Huyen will be the first international port
in the north of the country and will be able to handle container vessels with
capacities of up to 100,000t.
The project also includes the construction of
a 15.63km long highway that will connect the
eastern districts of Hai Phong with the harbor,
Dinh Vu Industrial Park and the expressway
to Hanoi. The highway incudes10.19km long
and 29.5m wide access roads and the 5.44km
long and 16m wide Lach Huyen Bridge.
Lach Huyen Bridge is the longest sea-
crossing bridge in Vietnam and one of the
longest bridges of its kind in South East Asia.
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With four lanes and two emergency lanes,
Lach Huyen Bridge both crosses the 500m
wide sea canal and the Bach Dang River
and Cam River estuaries. Construction work
began in February 2015 and is expected to
be completed by early 2017.
For the construction of the bridge structure,
500,000m³ of sand was used to reclaim land
for two 26m wide and 4.1km long working
platforms. The 88 bridge spans are supported
by pile structures. Each pier is supported
by 16 reinforced concrete piles with exterior
diameters of 1.3m and lengths of up to 46m.
As a subcontractor, DYWIDAG-Systems
International SPP – ASIA Ltd. supplied
external, Type 19-0.6" DYWIDAG Strand
Tendons with 1,320 MA Anchorages and
internal, Type 12-0.6" DYWIDAG Strand
Tendons with 2,292 MA Anchorages for
Lach Huyen Bridge.