规定了维修或修复、延长剩余使用寿命、加固以恢复结构退化导致的承载力、加固以增加活载承载力以及改变现有桥梁功能和拓宽的要求和程序。

Sets out requirements and procedures for the repair or rehabilitation, extension of remaining service life, strengthening to restore capacity due to structural deterioration, strengthening to increase capacity for live load, and changing the function of and widening of existing bridges.