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Highway prices in India

In India, construction of one km of a 4 lane separated highway generally costs around $2-$2.5M in normal terrain and around $3-3.5M in difficult terrain. Expressway costs are generally 150% of normal highway costs.

I am seriously baffled to see people stating $10-15 million for one km of highways!:eek2:Anyone who has driven in India and abroad on these roads will tell that there is no difference between them!
 

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http://www.worldhighways.com/sections/eurofile/news/european-highway-construction-costs-evaluated/

European highway construction costs evaluated
A STUDY of highway construction costs in eight European countries highlights Austria as the most expensive.

The report says that highways in Austria cost €12.87 million/km. The next most expensive country is Hungary
at €11.21 million/km, followed by Slovakia at €9.56 million/km and then the Czech Republic at €8.86 million/km. At the other end of the spectrum, costs in Denmark are only €5.89 million/km, in Croatia €6.682 million/km, in Slovenia €7.29 million/km and in Germany €8.24 million/km.

Terrain can increase costs significantly and construction of highways in mountainous terrain is most expensive in Germany at €25.99 million/km followed by Austria with €24.97 million/km, with the Czech Republic, Slovenia and Croatia following in descending order.
 

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What a poorly written article. It compares highways to highways while the numbers given are likely regular highways vs motorways.

By the way that article is over 2 years old.
 

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The UK has always been behind other developed countries when it comes to road building, and our infrastructure is decades behind in development. Nevertheless, here is a broad range of costs. All figures taken from the Highways Agency website, the government body that controls motorways and trunk roads in England.

New Build

A1(M) in North Yorkshire (dual three lane motorway with hard shoulders through flat open countryside) - £16.5million/km (EUR20.5million/km)
A46 in Nottinghamshire (dual two lane road in fairly flat open countryside) - £13.5million/km (EUR17million/km)

Widening schemes

M27 Southampton (dual three lane motorway with full hard shoulders widened to dual four lane motorway with discontinuous hard shoulders at bridges, no bridges rebuilt) - £13million/km (EUR16million/km)
A23 West Sussex (dual two lane road realigned and widened to dual three lane road) - £20million/km (EUR25million/km)

Variable speed limits and hard shoulder running

M6 J5-8 Birmingham - £6.5million/km (EUR8million/km)
M1 Bedfordshire (including replacement of one bridge and remodelling of one junction) - £20-24million/km (EUR25-30million/km)

Variable speed limits and hard shoulder running are the preferred option to widening, and widening is the preferred option to new build. As you can see though, spending money on improving existing roads can cost the same or more than building new roads, so the most cost effective way of creating capacity is still to build new roads. New road is almost as taboo as the word motorway though.
 
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