Signature Bridge

The Signature Bridge is a cantilever spar cable-stayed bridge which spans the Yamuna river at Wazirabad section, connecting Wazirabad to East Delhi.[2] It is India's first asymmetrical cable-stayed bridge.[2] The pylon of the Signature bridge is the tallest structure in Delhi and is double the height of Qutb Minar with its 154-metre high viewing box, which acts as selfie points for visitors.[3] It shortens the travel time between north and northeast Delhi.[4]

Signature Bridge सिग्नेचर ब्रिज
The Signature Bridge during construction phase
Coordinates	28.7053°N 77.2340°E / 28.7053; 77.2340
Crosses	Yamuna river
Locale	Delhi, India
Official name	Signature Bridge
Characteristics
Design	Cantilever spar cable-stayed bridge
Material	Steel and Concrete
Total length	675 metres (2,215 ft)
Width	35.2 metres (115 ft)
Height	165 metres (541 ft)
Longest span	251 metres (823 ft)
History
Architect	Ratan J. Batliboi - Architects Pvt Ltd, Mumbai (Architectural Advisor)
Engineering design by	Schlaich Bergermann Partner, Tensa India, Construma Consultancy (Structural Design) Wacker Neuson (Wind Tunnel Study) IIT Roorkee (Seismic Design)
Constructed by	DTTDC (Contractors:Gammon India and Construtora Cidade)
Construction start	2010
Opened	4 November 2018 [1]
Signature Bridge Location in Delhi

Background and History

The old wazirabad bridge

In 1997, 28 school students died in an accident on the narrow Wazirabad bridge.[5] Since then, the Delhi government had plans to build another parallel wide bridge nearby to alleviate traffic congestions. By the end of 1998, the Delhi government finalised the draft plan for this bridge.[5] However, the construction of the bridge was stuck due to multiple reasons - lack of manpower and financial difficulties, being the major reason. When the project started, its final cost was Rs. 1518.37 crore [6][7] The Delhi government was tight handed and it was very difficult for it to shell out the extra rising budget. ₹1,518.37 crores of rupees have been sanctioned recently through PBDB. The work had started in 2010 on the bridge. A fresh deadline of end 2016 was set in 2013.[7] Since then half a dozen times, deadlines have been missed and fresh deadlines set. Finally, the bridge was inaugurated on 4 November 2018 by the then Chief Minister of Delhi Arvind Kejriwal with the aim to ease the burgeoning traffic congestion on the existing Wazirabad bridge.[8][9]

Details

The bridge is a Cantilever spar cable-stayed bridge, a type of Cable-stayed bridge and in which cables were in a combination of radial and semi-harp arrangement; in which cables are spaced apart on the pylon, like the harp design, but connected to one point or a number of closely spaced points on the deck.[10] The dynamically shaped pylon consists of 2 inclined columns, which are rigidly connected to the driving lanes and bend mid-way.[8] The upper portion of the pylon anchors the back-stay cables as well as the main-span cables and the self-weight of the pylon balances out the self-weight of the super structure through the eccentric location of its center of gravity with respect to the pivot point of the pylon footing, reducing the load on back-stay cables which are fewer in numbers converged from the main-span cables.[8] The bridge is 675 meters long and 35.2 meters wide.[8] Built on the Yamuna river, this bridge connects east Delhi to Wazirabad. The bridge was designed with the intentions that when it would be opened for general public, the traffic pressure on the narrow and dilapidated old Wazirabad Bridge will ease out significantly.[11] Just like the Eiffel Tower in France, Signature Bridge have the facility to transport tourists on top of the main pillar, which is 154 m high, from where distant views of North Delhi can be seen.[12]

• Structural Design Firm: Schlaich Bergermann Partner[8]
• Contractor: Joint venture of Gammon India[8][13], Tensa India[14]& Construtora Cidade[15]
• Main span: 251 m [8]
• Height of pylon: 165 m above ground [8]
• Total length of infrastructure project: 6 km (approx.)
• Lanes: 2 x 4
• Deck surface: 25,000 m² [8]
• Total length of bridge: 675 m (incl. 100 m west extension)
• Side spans: 36 m
• Structural steel pylon: 5800 tonne[13]
• Structural steel deck: 7400 tonne[13]
• Open foundation: 6 nos.[13]
• Closed foundation: 16 nos.[13]

References

1. "New deadline, Signature Bridge style..." Times of India. 4 July 2018. Retrieved 7 July 2018.
2. "Signature Bridge To Be Ready By October: Arvind Kejriwal". www.ndtv.com. 6 July 2018. Retrieved 6 July 2018.
3. "154-metre high viewing box, selfie points: Delhi's Signature Bridge opens today".
4. "As Delhi's Signature Bridge opens, rush to ease on Ring Road and National Highway-9".
5. "নজির গড়ে দেশের বুকে তৈরি হচ্ছে প্রথম 'অ্যাসমিট্রিক্যাল' ব্রিজ". kolkata24x7.com. 6 July 2018. Retrieved 6 July 2018.
6. "More funds for Signature Bridge may help it meet latest dead". Times of India. 7 July 2018. Retrieved 7 July 2018.
7. "Delhi government clears signature bridge project". www.theweekendleader.com. 6 July 2018. Retrieved 7 July 2018.
8. "Yamuna Bridge at Wazirabad". 6 July 2018.
9. "Delhi's Signature Bridge To Have Selfie Spots, Glass Viewing Deck". NDTV. 3 November 2018. Retrieved 4 November 2018.
10. T.K. Bandyopadhyay; Alok Baishya (2000). P. Dayaratnam; G.P. Garg; G.V. Ratnam; R.N. Raghavan (eds.). International Conference on Suspension, Cable Supported, and Cable Stayed Bridges: November 19–21, 1999, Hyderabad. Universities Press (India). pp. 282, 373. ISBN 978-81-7371-271-5.
11. "Signature Bridge: A ray of hope over the Yamuna".
12. "'Delhi's Eiffel Tower': Signature Bridge inaugurated, opens to public tomorrow".
13. Gammon (February 2011). "Cover Story: Yamuna Bridge" (PDF). Steel Structure an dmetal buildings. 1 (4): 7. Retrieved 4 November 2018.
14. "Tensa India Signature Bridge details". tensaindia.com. Tensa India. Retrieved 4 November 2018.
15. "Project India Cidade Construdora". ccidade.com.br. Cidade Construdora. Retrieved 4 November 2018.

External links

• SignatureBridge - The Journey