Report on the 1997 Scanning Review of Asian Bridge Structures

This digest describes the findings of an international scanning tour undertaken to obtain a broad overview of bridge design, materials technology, construction procedures, and maintenance practices in Asia. The scanning team focused on identifying technological developments in Asia that have the potential for application in the United States. In addition, the team shared information with their international counterparts on U.S. practices in highway bridge construction, maintenance, and management to promote international exchange and cooperation. The scanning tour concentrated on the following topics: Design standards, codes, and specifications; Design and construction practices; Materials, fabrication, and joining techniques; Bridge protection strategies; Inspection and rehabilitation practices; Programming and management practices; and Innovations. The review was performed by an 11-member team representing several of the states, the Federal Highway Administration, the American Association of State Highway and Transportation Officials, and the National Cooperative Highway Research Program. The scanning tour took place from September 12 through September 28, 1997, and involved visits to Japan, South Korea, and Taiwan. In all three countries, site visits were made to major bridges. On the basis of the observations made during the scanning review, the team developed a list of 30 topics for possible application in the United States. The list was then divided into 6 high-priority topics, 7 medium- priority topics, and 17 other topics for consideration at a later date.