针对未来深水海洋桥梁工程建设需求，分析了中国海洋桥梁工程技术取得的成就及存在的不足，提出海洋桥梁工程面临的技术挑战主要为“强风浪、强腐蚀、超水深、超大跨”等四个方面，应高度重视环境作用及其组合、结构耐久性、抗疲劳和全寿命设计等理论研究，重点突破超大跨度桥式方案、超深水基础结构形式和快速施工新型结构形式等结构关键技术瓶颈。建议成立国家级海洋桥梁工程技术研究中心，加强科技硬件力量投入及创新人才培养，完善科技奖励机制。

According to the future construction demands of deep-water sea-crossing bridge engineering, the research status of structure and design theory is analyzed. It is proposed that technical challenges faced by sea-crossing bridge engineering are mainly four aspects: strong wind wave, strong corrosion, super water depth and super large span. The sea-crossing bridge engineering development attaches great importance to theoretical research on environmental effects and combinations, structural durability, fatigue resistance and life-time design, and focuses on breakthroughs in key technical bottlenecks such as super-long span bridge schemes, ultra-deep water infrastructure forms and rapid construction of new structural forms. It is suggested to establish the national sea-crossing bridge engineering technology research center, strengthen the investment in science and technology hardware, cultivate innovative talents, and improve the science and technology reward mechanism.