Piles of coir stocked under the Thang Long Bridge in Dong Anh District of Hanoi on Feb. 14.
A factory in the district has been using the space to gather and process coir.
At another section of the bridge, the space underneath has been turned into a cow farm.
Construction of the Thang Long Bridge, which crosses the Red River, began in 1974 and was completed in 1985. The bridge consists of two levels: the lower level is for trains and the upper level is for cars.
Near the end of the bridge, locals set up a pavilion and barriers to use the space inside for selling goods.
The space under an elevated railway in Hai Boi Commune of Hanoi's Dong Anh District has for years been used as a parking lots for trucks as well as a premise for selling bonsai trees.
A family uses a space under a railway section in the Hai Boi Commune as a store to buy and sell scrap metal.
In Ho Chi Minh City, the space under the Binh Loi Bridge on Pham Van Dong Street in Thu Duc City has for years been a warehouse used by many people.
Around 1.5 kilometers from the Binh Loi Bridge, Rach Lang Bridge on Pham Van Dong Street in HCMC's Binh Thanh District is used as a landfill.
On Feb. 2, people burned trash and the flames quickly spread to the bridge. It took firefighters almost one hour to put out the fire, but traces of the fire remain.
The space under the Y Bridge in HCMC's District 8. Some people even use this space to set up road side shops to sell drinks to passersby.