Page 40 - TT Magazine Feb-Mar 2019

INFRASTRUCTURE

another hassle for DTTDC. Further,
the invocation of the corporate debt
restructuring and strategic debt
restructuring schemes for the debt-
laden contractor further threatened
project execution.
Key advantages of a typical cable-
stayed form are as follows:
• much greater stiffness than
the suspension bridge, so that
deformations of the deck under
live loads are reduced
• can be constructed by
bridges, roads and toll plazas for no shortcomings in the quality were
facilitating the movement of over- acceptable,” he adds. However, cantilevering out from the tower
dimensional cargo. this issue was overcome with the – the cables act both as temporary
“The welding of the first segment assistance of German experts. and permanent supports to the
(L0) with the base of the pylon posed Meanwhile, the cost of the bridge, bridge deck
another major challenge as it required as per the escalation clause of the • for a symmetrical bridge (i.e.
the welding to be done at a very agreement, escalated from the initial spans on either side of the tower
sharp acute angle,” explains Bansal. estimate of Rs 11.31 billion to Rs are the same), the horizontal
“As welding plays a major role in 15.18 billion. Receiving a sanction for forces balance and large ground
the overall stability of the structure, the revised project cost proved to be anchorages are not required

Unique factors of this bridge

• It is the first asymmetrical cable- to which the tourists will have to finally been opened for public use.
stayed Bridge in India. In addition, change the lift to ascend to the Further, the installation of high-
the Pylon is more than the height gallery perched above. Due to speed lifts, pylon maintenance units
of the Qutub Minar. the inclination of the tower, the and flooring, roof and glass facade
• It shares the traffic burden of motion of the lifts will also be of the observation deck will take
Wazirabad bridge. Furthermore, inclined. about couple of months to complete.
the bridge shares the burden • Considered to be an engineering Once completed, the bridge will
of traffic that the wazirabad challenge to construct the lifts be handed over to the PWD for
bridge is bearing alone. The ascending in inclined motion. maintenance. The government has
bridge connects the outer ring Each of the lifts has capacity to also laid out plans of developing the
road on the western bank, with carry four to six people at a time. landmark bridge into a prominent
the Mangal Pandey Marg on the • It reduces the time travel by at tourist destination by enhancing its
eastern bank of the yamuna. least half an hour for commuters aesthetic features. Though the iconic
• The bridge is constructed in two going to Ghaziabad and Bhopura structure has opened only recently,
parts, whereby the first part is Border via Khajuri Khas, from rash driving on the bridge have
inclined at an angle of 60 degrees Wazirabad, Timarpur, Mukherjee come to the fore. To address these
while the second part is almost Nagar and Burari. concerns, several suggestions such
vertical. Despite all the challenges, difficulty as fixing a speed limit and installing
speed breakers on the bridge have
Due to this, the tower will appear in getting environmental clearance, been mooted.
to be in the shape of a bow, due geological surprises, the project has

40 February - March ’19 / TrafficInfraTech www.trafficinfratech-com-500653.hostingersite.com