SS4A Multi-Corridor Safety Improvement Project

The Cobb County Department of Transportation is seeking qualified engineering consulting firms to provide full‑service design and related engineering support for the SS4A Multi‑Corridor Safety Improvement Project. The effort covers planning, environmental documentation, preliminary and final design, right‑of‑way plans, and coordination with utility and water‑sewer agencies for safety upgrades along Pat Mell, Windy Hill, and Olive Springs Roads. The contract will be awarded through a competitive‑negotiation process and will require compliance with federal, state, and local regulations, including AASHTO, GDOT, and FHWA standards. • Scope includes survey database, concept development, FHWA‑compliant environmental documents, preliminary, right‑of‑way, and final design packages. • Required specialties: rural/urban roadway design, bicycle/pedestrian facility design, NEPA documentation, traffic operations studies, hydraulic/hydrologic studies, and various environmental surveys (air, noise, ecology, archaeology, etc.). • Deliverables must be submitted via Cobb County’s e‑procurement portal; hard copies are not accepted. • Pre‑proposal conference (non‑mandatory) on September 9, 2026 via Microsoft Teams. • Proposal deadline: September 24, 2026, 12:00 PM. • Questions due by September 18, 2026. • Consultant must be pre‑qualified with GDOT or Cobb DOT and comply with Georgia Security & Immigration Compliance Act.