New construction and replaced impervious surfaces will trigger the new LID standard in the future. In implementing the new LID standard, DOTs need a factual basis to assess the feasibility of applying these standards to the states’ transportation networks. The proposed research is to conduct a literature search to determine to what extent, if any, highway runoff can be redistributed below impervious pavement, allowing the subgrade to be used for stormwater storage and infiltration, without presenting significant risk to the integrity of the highway infrastructure.