The purpose of this study is to quantitatively analyze 1) the geomorphic and structure controls on channel-bed and footing scour at road-stream crossings, and 2) the effectiveness of aquatic organism passage at these crossings by comparing channel characteristics within the crossing structure to reference channel conditions not influenced by the structure
Decision Analysis Guide for Corrugated Metal Culvert Rehabilitation and Replacement using Trenchless Technology
Culverts under large embankments can be replaced using conventional open-cut methods. However, such installations are costly because of the extreme quantities of earth that must be moved. Additionally, maintaining traffic is difficult, and the replacement operation may result in adverse environmental effects. Consequently, using trenchless technology is worth considering.