Assessment and Rehabilitation of Existing Culverts. National Cooperative Highway Research Program (NCHRP) Synthesis 303. A Synthesis of Highway Practice

摘要

The deterioration of pipes and culverts is a growing problem for transportation agencies. As transportation drainage infrastructures age, the need for repair or rehabilitation often becomes more critical. As a result, the number of pipes and culverts being repaired or rehabilitated is increasing each year. Transportation agencies have more pipes and culverts than bridge structures in their transportation systems. (Throughout this report, the term 'pipes' refers to both pipes and culverts). The investment in and the importance of these pipes in the overall transportation system are substantial. Most pipes, however, are not seen by the traveling public and become noticeable only when a problem arises, such as settlement in the roadway or flooding.