| ADT: | Average Daily Traffic |
| APR: | Advance Planning |
| ARAP: | Aquatic Resource Alteration Permit |
| A & E: | Activity and Event Report |
| CE: | Categorical Exclusion |
| COE: | U. S. Army Corps of Engineering |
| CSS: | Context Sensitive Solutions |
| DEIS: | Draft Environmental Impact Statement |
| DHV: | Design Hourly Volume |
| DOT: | Department of Transportation |
| EA: | Environmental Assessment |
| EIS: | Environmental Impact Statement |
| FHWA: | Federal Highway Administration |
| FONSI: | Finding of No Significant Impact |
| IJS: | Interchange Justification Study |
| IMS: | Interchange Modification Study |
| ISTEA: | Intermodal Surface Transportation Efficiency Act |
| LOS: | Level of Service |
| NOI: | Notice of Intent |
| NPDES: | National Pollution Discharge Elimination System |
| PDP: | Project Development Process |
| PE: | Preliminary Engineering |
| PSA: | Public Service Announcement |
| PS&E: | Plans, Specification, and Estimate |
| ROW: | Right-of-Way |
| ROD: | Record of Decision |
| SHPO: | State Historic Preservation Office |
| SIU: | Section of Independent Utility |
| STIP: | State Transportation Improvement Program |
| STP: | Surface Transportation |
| TDEC: | Tennessee Department of Environment and Conservation |
| TDOT: | Tennessee Department of Transportation |
| TIP: | Transportation Improvement Program |
| TVA: | Tennessee Valley Authority |
| TWRA: | Tennessee Wildlife Resource Agency |
| USACE: | United States Army Corps of Engineers |
| USFWS: | United States Fish and Wildlife Service |
| USGS: | United States Geological Survey |