介绍2004年美国各州整体式桥台无伸缩缝桥梁实践现状的调查与分析结果。调查的内容包括该类桥梁的数量、跨径、结构形式、施工方法、构造分析、既有桥梁改造以及使用中存在的问题等。该类桥梁在美国已经成功地实践了数十年,但其设计和构造至今未有统一的技术标准,建立相应的设计规范已成为美国有关部门的当务之急。 This paper introduces the survey and analysis of the status quo of the practice of integral bridge abutments without expansion joints in all states of the United States in 2004. The survey includes the number of such bridges, span, structure, construction methods, structural analysis, existing bridge reconstruction and problems in use. Such bridges have been successfully practiced in the United States for decades, but their design and construction so far have no uniform technical standards. Establishing corresponding design codes has become a top priority for U.S. departments.