Roadside vegetation is exposed to a variety of biotic and abiotic stresses that can impact plant health. Drought, pollution, disease, insects, lack of nutrients, and roadbed management practices may potentially act alone or synergistically to adversely affect plants in proximity to the roadside. To date, little published research documents the impacts of certain deicers on vegetation in relationship to other potential stresses. This study provides an ecological impact assessment of factors affecting the health of roadside vegetation in the state of Colorado including potential biotic and abiotic plant stressors and deicer applications.
Based on the study presented in this report, it was determined that S50 structural concrete can be produced to meet the requirements of the CDOT Standard Specification for Road and Bridge Construction.
Self-consolidating concrete (SCC) is a stable and highly flowable concrete that consolidates without the help of external vibration and can flow through heavy reinforcement and around corners in complex formwork under its own weight. The exceptional performance of this remarkable material has attracted the attention of construction firms and DOTs in the United States interested in using SCC on new bridge construction and bridge repair projects.
Strategic Transportation, Environmental and Planning Process for Urbanizing Places, or STEP UP, is an environmental streamlining pilot project. This report discusses the recommended steps and costs implementing STEP UP across Colorado.
The Greening Government Research Project is Phase 1 of a two-phased research approach to identify how CDOT can achieve the goals and objectives mandated in Governor Ritter's recently signed executive orders on greening state government.
