Under ADB financed Hunan Road III project, AiZhai Suspension Bridge was one of the key structures in the alignment. The bridge was the longest suspension bridge over a mountain valley in the World. The overall bridge length is 1,534 m with the main suspension span of 1,176 m and two side spans of 242 m and 116 m, respectively. The bridge spans over a deep mountain valley of about 330 m, which is one of the deepest valleys for a suspension bridge in the World. The complicated geological conditions and difficult transportation access imposed many technical and construction challenges for the project, the estimated project cost is $120 million. HJI Group as the project implementation consultants provided consulting services for design reviews, a special study on technologies for suspension bridge design and construction, technical advises, construction technologies improvement, construction monitoring, and project management.

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