Hyderabad: Passing through traditional traffic bottlenecks like Oliphant Bridge, Chilkalguda, Alugaddabavi, Begumpet and Bharatnagar road-over-bridges in the city has always been a cumbersome affair, especially during peak hours. Gridlocks during rush hours at these locations are always a given, adding to the frustration of commuters.
But all this will be history for those travelling in Metro trains from Nagole to Miyapur from November 28 onwards.
The Hyderabad Metro has rail over bridges (RoBs) crossing over all these five bridges on the 30-km Nagole-Miyapur stretch.
Among all the locations, the most significant difference perhaps will be felt at the Oliphant Bridge near Secunderabad Railway Station, which has for long been one of the major bottlenecks in the city with traffic moving at snail’s pace most of the time.
More importantly, vehicular traffic is expected to reduce considerably at these localities soon after commencement of metro operations. This will also aid in smooth flow of traffic at these locations, besides indirectly curbing emission levels.
Metro RoBs are crossing the Indian Railway tracks at eight locations in the twin cities.
Depending on the location and technical requirements, different methods were adopted for constructing these eight Metro RoBs. While steel bridges were constructed at Oliphant and Bhoiguda, pre-stressed concrete bridges were constructed at Bharat Nagar, Lakdikapul, Malakpet, Alugaddabavi, Chilkalguda and Begumpet.
Since the railway tracks are already on elevated bridges at Malakpet, Alugaddabavi, Chilkalguda, Oliphant and Bhoiguda, the Metro RoBs will be crossing these railway bridges at double elevation.
Of the eight Metro RoBs, constructing those at Oliphant Bridge and Alugaddabavi were an engineering challenge for HMR officials.
It is built at a height of about 60 feet from road level and this was specifically done to accommodate future double-decker trains of Indian Railways. The 1,100-tonne steel bridge has the longest obligatory span of 272 feet to accommodate the existing eight and five tracks to come up in future. The entire steel bridge was manufactured in Ghaziabad and assembled at a factory and later dismantled and brought to Secunderabad for re-assembling.
This was another challenge for officials due to the presence of a 600 mm dia water pipeline, a 33 kv power line and telecom cables. The bridge was constructed using the pre-stressed concrete method at a height of 62 feet from ground level and also built as a double elevation RoB over an already existing elevated RoB.