World’s Longest and Deepest Train Tunnel – Gotthard Base Tunnel

As on June 1, 2016, the twin tubes of GBT (Gotthard Base Tunnel) which run from north to south under the famous Alps is world’s longest and deepest train tunnel.

The Project Background
The first thought of building a tunnel under the Alps was given way back in 1947 but the commission started deliberations in 1963. Then in 1992, the Swiss voters gave the go ahead to this project via referendum and the on site work started in 1995. The TBM’s (Tunnel Boring Machines) were deployed to work in 2002 from both the North and South end. In March 2011, the tunnel boring was completed.

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The Mumbai Metro Project – Important Things You Should Know

So after all the delays and hurdles, finally The Mumbai Metro project phase 1 was launched on 8th June, 2014. More than 2.5 lakh passengers traveled on the very first day of its launch.


Here are some facts regarding the The Mumbai Metro Project

1) The Mumbai Metro is India’s first public private partnership metro project. In this project, construction, operation and maintenance are all given to Mumbai Metro One Pvt Ltd which is a joint venture of Anil Ambani’s Reliance Infrastructure, Veolia Transport and the Mumbai Metropolitan Region Development Authority.
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India’s Lodha World One To Be World’s Tallest Residential Tower

Lodha’s World One will bring India’s name in the list of some of the world re-known engineering projects as it will be the tallest residential tower in the world.

Project Details and Costing
Location- Upper Worli, Mumbai, Maharashtra, India.

Site Area – 17.5 acre

Land Acquired from Srinivas Cotton Mills By Lodha Group for Rs 250 crore (US$40 million)

Project Cost – Rs 20 billion (US$320 million)

Expected Revenue from Sales – Rs 50 billion (US$800 million)


Pei Cobb Freed & Partners are the architects for World One. This company has more than 200 awards for design excellence which include 24 AIA National Honor Awards.

Structural Engineer
Leslie E. Robertson Associates (LERA) are the ones doing structure designs for this project. They have vast experience in designing tall buildings as their earlier projects included the Shanghai World Financial Center, Bitexco Financial Tower, World Trade Center in New York.

Types of Flats in World One

1) World residences – These are the ones starting from level 1 to level 43 with three and four bedroom houses along with curved glass living room and wide sundecks along each room.

2) World Villas – These lavish four-bedroom flats will be from level 43 to 117 and are designed in such a way that they offer 270 degree view of the city. Other amenities include home theatre, an outdoor Jacuzzi, a private pool and wide sundecks in every room.

3) World Mansions – These are the super luxurious flats starting from 117 storeys. These houses are sprawled over two floors and offer 360-degree view of the city.

This is not for even rich, these are only for superrich as the apartment prices start from Rs 7.5 crore (US$1.2 million) and go all the way to Rs 50 crore (US$8.0 million).

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Gravelly Hill – Spaghetti Junction UK

Gravelly Hill Interchange also known as the Spaghetti Junction is one of the iconic civil engineering work in Birmingham, United Kingdom. Gravelly Hill became famous as the Spaghetti Junction due to its complex design.

This junction is spread across 30 acres and has 18 routes which include slip roads ( 4km or 2.5 miles). It has a total of 559 concrete columns and passes over two railway lines, three canals, and two rivers

Gravelly Hill

The construction work started in 1968 and was completed in May 1972 and till date its considered as one of the most complicated road network in world.

Check out the construction video of Gravelly Hill – Spaghetti Junction UK

We at are thankful to Sir Thomas for submitting this Civil Engineering Wonder information to us.

India’s 11 Super Expressways

India, a developing country has world’s third largest road network but when we talk about expressways, we can hardly name a few like Mumbai-Pune Expressway and Delhi-Gurgaon Expressway. So we decided to tell you about some of the other expressways in India.

Here is the list of India’s top 11 Super Expressways

1) Ahmedabad Vadodara Expressway
Ahmedabad Vadodara Expressway is 95 km long and joins Ahmedabad and Baroda in Gujarat. It is also referred as National Expressway 1. This expressway was opened to public in 2004 and was constructed under the Golden Quadrilateral Project by NHAI.

2) Mumbai-Pune Expressway
Mumbai-Pune Expressway (official name is the Yashwantrao Chavan Expressway) is 93 km long and is considered as one of the best expressways in India. It is India’s first six lane high speed expressway and was made by Maharashtra State Road Development Corporation (MSRDC) at a staggering cost of Rs 1,630 crore (US$363.49 million). It was opened to public in April 2002

3) Jaipur-Kishangarh Expressway
Jaipur-Kishangarh Expressway is 90km long and it connects Jaipur with Kishangarh. It was constructed under the Golden Quadrilateral National Highways Development Project and its cost was USD 154 million. More than 20,000 vehicles pass from this highway everyday.

4) Allahabad Bypass
Allahabad Bypass covers a distance of 86 km and is one of the most remarkable achievements of the Golden Quadrilateral project. It connects India’s four main metropolians New Delhi, Kolkata, Mumbai and Chennai.

5) Ambala Chandigarh Expressway
Ambala Chandigarh Expressway covers a distance of 35 km and has reduced the traffic congestion to a much greater extent. It was opened in 2009 and was built at a cost of Rs 298 crore ($66.45 million)

6) Chennai Bypass
Chennai Bypass covers a distance of 32 km and connects four national highways (NH45, NH4, NH205 and NH5) around Chennai. The cost of this project was Rs 405 crore (Rs 4.05 billion).

7) Delhi-Gurgaon Expressway
Delhi-Gurgaon Expressway covers a distance of 28 km and has been a life saver for commuters. Before construction of this expressway huge traffic jams were seen on the roads. Though this problem has not been solved 100% but still this expressway has brought some relief to the commuters. Delhi-Gurgaon Expressway starts at Dhaula Kuan in Delhi and ends at Manesar which is on the outskirts of Gurgaon. The cost of this project was $223 million and it was opened for public use in January 2008.

8 ) Noida-Greater Noida Expressway
Noida-Greater Noida Expressway covers a distance of 24.53 km. This six-lane highway connects Noida to Greater Noida. The total cost to build this expressway is about 400 crores (Rs 4 billion).

9) Delhi Noida Direct Flyway
Delhi Noida Direct Flyway or popularly known as the DND flyway is an eight lane road having a total length of 9.2 km and connects Delhi to Noida. It was built by The Noida Toll Bridge Company Ltd.

10) Hyderabad elevated expressway
Two separate elevated expressways were to be constructed in Hyderabad to overcome the congestion problem. The first one is P.V. Narasimha Rao Elevated Expressway which covers a distance of 11.6 km and the other Rajiv Elevated Expressway which will cover the distance of 20 km. P.V. Narasimha Rao Elevated Expressway was completed in 2009 and it connects Hyderabad International Airport to Mehdipatnam. Rajiv Elevated Expressway was proposed as an extension and will cover Secunderabad-Shamirpet stretch via Karkhana, Trimulgherry and Bollarum. But this project is currently under suspension due to high project costs.

11) Hosur Road Elevated Expressway
Hosur Road Elevated Expressway covers a distance of 9.98 km and connects Bangalore to Hosur. This expressway has the distinction of becoming the tallest expressway in Bangalore at the height of 17 meters i.e. 56 ft. This project was started in 2006 by BETL and was inaugurated on 22 January 2010.

We have many more expressways in India which are under construction or are already approved but work has not started yet. But still India needs many more of those expressways, to reduce the traveling time and for better connectivity across other Indian cities and states.

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