Mumbai, Tuesday, June 30, 2009 10 A DNA Promotional Feature in association with HOW THIS IMPRESSIVE EDIFICE WILL CHANGE YOUR COMMUTE Transforming dreams to reality The projected difference in an average road journey from Lovegrove Junction to Mahim Junction THE SCENARIO TILL DATE NOWE WITH THE BANDRA WORLI SEA LINK Facilitating a faster phase it will connect Bandra to HCC (Hindustan Construction The Link Bridge layout is cat- Distance: 7.7 km Via Sealink: 4.70 km Worli where as in the subsequent Company). egorized into three different Traffic Signals: 23 Traffic Signals: 4 commute and phases the plans are to take it fur- Until now, Mahim Causeway, parts: reducing traffic jams ther to Haji Ali and then to Nari- the North-South connector be- Part 1: The north end approach Morning Peak Hour Travel: 35 minutes Morning Peak Hour Travel: 6 minutes man Point. It is a connecting tween the western suburbs and structure mainly with precast Evening Peak Hour Travel: 38 minutes Evening Peak Hour Travel: 6 minutes are the twin goals of bridge linking the city of Mum- the island city of Mumbai getting (PC) segmental construction the Bandra Worli bai with its western suburbs and increasingly bottleneck prone. It Part 2: The Cable Stayed Bridge Average Journey Speed: 13 Kmph Average Journey Speed: 80 Kmph has the potential to bring about takes commuters nearly an hour at Bandra channel is with 50m - Sea Link, which is permanent and far reaching to travel the 8 km distance from 250m-250m-50m span arrange- finally opening up changes in the travel patterns of Mahim to Worli. ment and the Cable Stayed Some of the reasons why the project got delayed the area. The Bandra Worli Sea Link Bridge at Worli channel is with to the public today The Bandra Worli Sea Link is will increase the route options 50m-50m-150m-50m-50m span The original scope of the work comprised con- z Increased the width and weight of the primarily meant to provide an al- of passengers travelling from the arrangement struction of 8 lane 3926 m long bridge includ- Segments ing 600 m long cable stay bridge on single Vijay Pandya. MUMBAI ternative to the Mahim Cause- island city to the western sub- Part 3: The south end approach z Segment erection methodology got rede- tower in the open sea, 449 m long approach, way route that is presently the urbs and vice-versa and thereby structure mainly with precast fined The Bandra Worli Sea Link is a only connection between the decongest the overstrained segmental construction. toll plaza, traffic control and surveillance sys- civil engineering marvel span- south Mumbai and the Western Mahim Causeway and western The project scope was ex- tem, signages, illumination, landscaping etc. z When the construction of tower was about ning an arc of the Mumbai coast- and Central suburbs. The project corridor. The Link Bridge con- panded over the last few years Change in alignment to begin, further modifications were intro- line. With its cable-stayed towers starts from the interchange at sists of twin continuous concrete due to various community de- duced: z The structure from Pier No. 34 onwards was soaring gracefully skywards, the Mahim intersection, i.e. inter- box girder bridge sections for mands (see box) and some un- shifted 200 m in the sea on Worli end, Groves design in tower sea link is a reflection of the mod- section of Western Express High- traffic in each direction. Each foreseen events resulting in sev- changing the alignment to join at the con- z Insistence on specific type of tower form- ern infrastructure that Mumbai way and Swami Vivekanand bridge section except at the cable eral variations made after the necting point work is adding in its progress towards Road at the Bandra end, and con- - stayed portion is supported on work started. becoming a world-class city. nects it to Khan Abdul Gaffar piers typically spaced at 50 me- Thankfully,with four lanes of z Change in alignment resulted increase in Introduction of cable stay bridge on Worli The project is a part of the Khan Road at the Worli end. ters. Each section is meant for the Sea Link being opened to the Worli end Link bridge from 230 m to 811 m channel Western Freeway Sea Project, The project commissioned by four lanes of traffic complete public today and the remaining z Foundation base was altered with proposed z A 350-m long cable stay bridge, with a 150- which, in turn, is a part of a larg- the Maharashtra State Road De- with concrete barriers and serv- four due for unveiling by Decem- specifications m middle span, was introduced to help the er proposal to upgrade the road velopment Corporation Ltd ice side walks on one side. The ber 2009, Mumbaikars can now fishermen get access to the Worli side by transportation network of (MSRDC) and the Maharashtra bridge alignment is defined with finally look forward to a faster z Part of the superstructure changed from cast boat. greater Mumbai. In the first Government has been built by vertical and horizontal curves. commute down this stretch. in situ to pre cast segment construction style Change in design of Bandra Cable stay bridge z This changed the construction sequence and methodology from the initial plan: z Instead of single cable stay tower, a new design of separate cable stay towers for z Additional support piers had to be created each carriage way was introduced. The new for shifting the Launching Trusses from one towers have unique specific geometric tower to other shape, having legs diverging in one plane z The major variations were ordered in and conversing in another plane. October 2004 as a result HCC could not do z Major changes in the foundation; the number much work in the initial four years and the of pile foundation increased from 40 to 52. actual work began only in January 2005. Your dreams are not yours alone z Landscaping and promenade develop- z Instrumentation to monitor vital bridge QUOTE CORNER FACTS AT A GLANCE ment. parameters Basic Benefits ● Dr. Dilip B. Boralkar, Former Member Secretary Cost : Rs. 1634 Crore (Cost of all pack- z A cloverleaf interchange at Mahim inter- Estimated savings in fuel and Vehicle ages including escalation & IDC.) section and a flyover at Love Grove junc- Power Supply and Road Operating Costs (VOC): Rs. 100 Crores of MPCB Type of Project : Build Operate tion to ensure faster and safer traffic dis- per annum (1999yr.Base) ● The vehicular traffic Transfer (BOT) persal at both ends Considerable savings in travel time (20 Lighting Systems to 30 minutes) due to increased speed passing from Bandra, z Vertical clearance of 20 m below Bandra z Diesel generators and auto mains failure and reduced delays (23 signals avoided) Mahim, Dadar, Prabhadevi Project Features Cable Stayed Bridge for water transport panels to cater as emergency backups. ● Stress free driving and part of Worli can now z State-of-the-art construction technology ● Reduced accidents take Bandra - Worli Sea z Adequate lighting levels and energy sav- z 8 lanes exclusively for fast moving vehi- ● Reduction in traffic on existing roads Bridge. This will bring in z Emergency crossovers and Disaster ing luminaries. cles with limited access (four wheelers because of traffic diversion to the Sea and above). Management Program the environmental health z Lightening protection at bridge tower Link benefits in terms of saving z 2 lanes proposed to be reserved for and control room. ● Reduction in Carbon Monoxide and Nitrogen Oxide Levels in Mahim, Dadar, the exposure of vehicular buses. Quality Assurance z Facade lighting for bridge tower and spe- Prabhadevi and Worli along existing emissions to the z 16-lane toll plaza with automated toll cial lighting in landscaped area. Features incorporated to enhance bridge roads inhabitants of this area. Additionally, due to collection system. performance and durability include: ● Reduced noise pollution in Mahim, smooth flow of traffic, fuel consumption z "Intelligent Bridge" with sophisticated z High performance concrete (grade M60 The Bridge consists of twin continuouscon- Dadar, Prabhadevi and Worli along exist- would also be less; this means less emission surveillance, information, guidance and with micro silica slurry) to enhance dura- crete box girder bridges for traffic in each ing roads of air pollutants and better air quality in emergency support systems. bility direction. The Bridge (except the cable- ● No adverse effect on fisheries, marine Mumbai city. For compounding the stayed portion) is supported on piers typi- life and livelihood of fisherman z Main Cable Stayed Bridge 500 m long z Fusion bonded epoxy coated reinforce- environmental benefits, the Bandra -Worli ● Landscaping along the approaches and spanning across Bandra Channel. ment as anti-corrosive treatment cally spaced at 50 meters. Each section is Bridge should be extended to north (Haji Ali) meant for four lanes of traffic, with anti- waterfront promenade will enhance z Second Cable Stayed Bridge 150 m long and to south (Versova) as soon as possible. z Pre-cast technology ensures quality pro- crash barriers and service sidewalks on the environment and add green spots to spanning across Worli Channel. duction of segments one side. the city The bridge is pride of nation. Araby EL Shenawy, Engineer and head of the Project Management Consulting team, from Egypt The method of balanced cantilever was adopted for the construction of the deck for Bandra Cable-stayed Bridge. This is considered to be one of the biggest cable- stayed bridges in the world with concrete deck built with this method of construction. It was therefore a real challenge to monitor the behavior of the structure during all erection stages and to compare the same with the behavior of the corresponding theoretical computer model of the bridge, to ensure the achievement of the desired geometry at the end of construction.