A VND467 billion (US$22.4 million) road tunnel in Hanoi that opened to traffic three years ago has developed many cracks including one that leaks groundwater.
News website VnExpress said Sunday the vertical cracks are on the inside walls of the Kim Lien Tunnel, and measure between three and five meters each.
The leaky one has caused the cement to peel off around it, while the other cracks too have fungus and moss around them.
Nguyen Xuan Tan, deputy director of the city Transport Department, said the cause of the cracks is unknown.
He would get the tunnel manager Hanoi Traffic Project Company and consultant Japan Bridge & Structure Institute to look into the problem, he said.
The tunnel, 140 meters long and 18.5 meters wide, was the first and most modern in the capital when it was built in June 2009 to link Dai Co Viet and Dao Duy Anh Streets.
But a lot of questions quickly arose about how modern it really was when its opening was marked by massive flooding for two hours following a shower.
One month later there were leaks in the walls and roof. But the Japanese consultant said there were no cracks and that the leaks were a result of normal dripping due to absorption at elastic slots.
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