Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows a truck which fell off a collapsed section of the Yangmingtan Bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)

Photo taken on Aug. 24, 2012 shows the collapsed section of the Yangmingtan bridge in Harbin, capital of northeast China's Heilongjiang Province. Four trucks fell off to the ground after a section of the Yangmingtan bridge collapsed in Harbin early Friday morning, killing three people and injuring five others. The 15.4-kilometer-long bridge was opened to traffic last November. The collapsed part, which measures 100 meters in length, fell from a height of 30 meters. (Xinhua/Wang Song)