DMRC begins work on 1st cantilever bridge over Yamuna
NEW DELHI: The DMRC has commenced preliminary work on the construction of the fifth metro bridge over the river Yamuna in Delhi as part of its Phase-IV work on the Majlis Park-Maujpur corridor, officials said on Sunday.
“After carrying out geo-technical investigation at the location of proposed piers, the activity of casting of test piles is in progress," The Delhi Metro Rail Corporation (DMRC) said in a statement.
To utilise the available time during this monsoon season, a cofferdam has been constructed, away from the active course of the Yamuna, by raising the level of the ground by filling of earth and sand with protection of its slope through bamboo, jute netting and sand bags, the officials said.
The level of the cofferdam has been kept same as that of the adjacent road to ensure supply of requisite construction material like steel reinforcement, metal liner, ready mix concrete etc.
“It will be the first-ever metro bridge over Yamuna to be built using the cantilever construction method. A cantilever is a rigid structural element which extends horizontally and is supported at only one end,” the statement said.
Typically, it extends from a flat, vertical surface such as a wall or a pier, to which it must be firmly attached. Cantilever construction allows overhanging structures without additional support. Employment of this technology will make the bridge look aesthetically better, the DMRC said.
This new bridge will cross river Yamuna at about 385 m downstream of old Wazirabad Bridge and 213 m upstream of the existing Signature Bridge, the DMRC said.