HULHULE-MALE’ BRIDGE PROJECT

EIA for the proposed Hulhule-Male’ Bridge Project
In conclusion, Scheme A is the recommended design for this project based on; (1) having
smooth gradients and slopes, (2) provides the best alignment with existing road network, (3)
being in line with the overall Male’ urban region master plan, (4) better depth and geological
conditions of the sea area where the bridge passes being the best (5) having a route length that is
also relatively shorter, and (6) limited loss of precious land in Male’.
7.3 Comparison and Selection for Bridge Scheme
7.3.1 Factors considered for selecting a bridge scheme
Analysis of the investigations at project site revealed that the main factors influencing the
distribution and spanning of the bridge are reef slopes, limited aviation height, navigation
clearance, bridge type and deep water sea bed inside channel.
Taking the above factors into account, under the principle 'Brief, Simplicity and Generosity' for
bridge landscape and meeting the height limit for aviation service prestressed V-shaped concrete
outrigger six-span continuous rigid structure scheme is selected for main bridge.
Male
(breakwater spacing)
Airport
(Aviation
height
Navigation clearance: 12m
li it) (Mean sea level )
Water depth: 46m
(Width of deep slot)
Figure 7.2: Schematic Diagram for Main Control Conditions on Topography and Surface Features for the Bridge
(1) Bridge span scale
The land area on both banks of the cross-sea bridge is formed by reclaimed land, with a mean
ground elevation of 1.0~1.6 m. The width of the water area of the strait where the bridge spans is
about 1.4 km,and the width of the deep section of the channel in this route is about 775 m
where the maximal water depth reaches 46 m. In order to limit the scale of the main bridge and
reduce the construction cost, the deep section area is only considered as the main bridge.
(2) Consideration on deep water area
Even though the recommended route is located in a relatively shallow area of Gaadhoo Koa
channel, the depth of this area in the deeper sections can still reach 46 m. The construction cost
and difficulty of the bridge foundation within such areas is quite high. Therefore, the span of the
bridge in such areas should be increased appropriately to reduce the number of pier
arrangements in the deeper areas as far as possible.
Prepared by: CDE Consulting & China Shipping Environment Technology
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