丹尼斯·默茨教授在与癌症长期斗争后去世。他职业生涯的大部分时间都致力于推进桥梁工程的最新发展。他是ACI和ASCE许多人的好朋友和同事。ACI-ASCE联合委员会343，与ACI委员会342和348共同赞助了四次会议，以表彰他在混凝土桥梁设计和评估方面的贡献和成就。这些会议强调了默茨博士与ACI和ASCE其他人在各种主题上的重要工作和合作努力。这些会议还结合了ACI和ASCE研究人员和从业者在解决与混凝土桥梁设计和评估相关的各种主题方面的努力。 会议的范围和结果与ACI的任务有关。它们提高了对适用于各种极限状态的既定设计方法的认识，涵盖了与弯曲、剪切、疲劳、扭转等相关的主题。它们解决了与新兴设计和评估方法以及设计实践、规范标准和相关应用的最新发展相关的问题。研讨会出版物（SP）预计将成为新的和现有混凝土桥梁和结构的设计理念和评估方法的重要参考。

Professor Dennis Mertz passed away after a prolonged battle with cancer. He spent a large portion of his professional career working on advancing of the state-of-the-art of bridge engineering. He was a great friend and colleague to many at ACI and ASCE. Joint ACI-ASCE Committee 343, joined with ACI Committees 342 and 348, sponsored four sessions to honor his contributions and achievements in concrete bridge design and evaluation. These sessions highlighted the important work and collaborative efforts that Dr. Mertz had with others at ACI and ASCE on various topics. These sessions also combined the efforts among ACI and ASCE researchers and practitioners in addressing various topics related to the design and evaluation of concrete bridges. The scope and outcome of the sessions are relevant to ACI's mission. They raise awareness on established design methodologies applied for various limit states covering topics related flexure, shear, fatigue, torsion, etc. They address problems related to emerging design and evaluation approaches and recent development in design practices, code standards, and related applications. The Symposium Publication (SP) is expected to be an important reference in relation to design philosophies and evaluation methods of new and existing concrete bridges and structures.