Page 37 - TT Magazine Feb-Mar 2019

INFRASTRUCTURE

metal. It is done by immersing the metal
in molten zinc at a temperature of
around 840°F (449°C). Here a coating
of 250 uM was applied to the Stringers
& Bracings of the bridge.
• Also, all enclosed spaces were sealed
by welding and were vacuum tested
so that no air can go inside and initiate
corrosion.
Seismic Restrainers
Location of Bogibeel Bridge falls in Seismic
Zone-V which has been most vulnerable to
earthquakes with magnitudes in excess of
7.0. In order to offer good stability to the
heavy spans (1700 MT), they are provided
with seismic restrainers.
This arrangement works like male &
female connection with female pockets districts of Upper Assam from the rest of
embedded on to piers and male parts the country through the North bank and
arrangement on the span. For precise will do away the need to take tortuous
lowering of the span such that male joint route through Guwahati in the South bank.
fits into the female connections before the Boost Tourism: Tourist places of Arunachal
final lowering of the span on the permanent Pradesh will become more accessible and
bearings, HCC team devised a unique give a fillip to the tourism industry. The
circular slider frame made of stainless steel bridge will also cut down the distance to
with jacks arrangement. the border with China by 10 hours.
With this, the exact movement to fit the Better Medical Facilities: Dibrugarh
Seismic restrainers and final lowering of the district also houses prestigious Assam
heavy spans on permanent bearings were Medical College. The bridge will benefit the
achieved. intra/inter-state transportation of medical
Benefits of the Bridge patients seeking treatment in Dibrugarh.
Currently, if any emergency of super
Defence Boost: The Bridge will be a
big boost for the defence forces as it will speciality kind arises along the northern
bank, the patients need to rely on boat
provide rapid connectivity to areas near
the India-China border. This means quicker ferries for transportation which can be very
movement of troops and heavy weapons cumbersome and dicey.
systems. Economic Benefits: The bridge, by
Time Savings: The biggest benefit is the connecting two very important highways
time that it is going to save. As of now of Assam namely the NH37 and NH52, will
a train journey from Arunachal Pradesh contribute in enhancing the intra-state and
to Assam’s Dibrugarh requires a 500 km inter-state trade ecosystem. At present,
detour via Guwahati. Now, the journey will any cargo generated on both the sides
be reduced to less than 100 Km. Also, the consumes at least 10 to 12 hours before it
train journey between Delhi and Dibrugarh reaches its destination.
will also come down from 37 hours at The Bogibeel Rail-Road link will
present (via Guwahati) to 34 hours – a significantly reduce this trans-shipment
reduction of three hours. time and will take maximum two hours,
Direct access to districts of Upper Assam: thus saving the unnecessary extra cost of
The bridge will provide direct access to the transportation and time too.

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