Clashes broke out between police and protesters after thousands of Spaniards took to the streets of the capital Madrid to protest against controversial construction project .
A total of 11 people were reportedly arrested and many were injured when a demonstration turned violent Madrid on Wednesday ( 16/1 ) .
Protesters gathered in the Spanish capital in solidarity with the country's northern city of Burgos , who demand an end to the local government plans to change the way into the green lane highway .
Gamonal Burgos project in the district of the city is estimated to cost at least € 8 million ( U.S. $ 11 million ) .
Critics argue that the plan is to change the way waste money on when Spain suffered from the financial crisis .
Protests night in response to expensive project that began on January 10 in Burgos , has spread nationally in the harsh austerity measures in Spain .
Police have arrested about 40 people since demonstrations began , as also seen violent clashes in the northern city itself .
Hit by the global financial crisis , the Spanish economy collapsed into recession in the second half of 2008 , causing more than 26 percent of residents out of work .
Spain 's debt ratio has jumped from 40.2 percent of gross domestic product ( GDP ) in 2008 - the year when the economic crisis erupted European countries to 85.9 percent at the end of 2012 .
