Oak Ridge National Laboratory

Ardurra has served as a trusted transportation engineering consultant to Oak Ridge National Laboratory (ORNL) since August 2001, delivering traffic and transportation services across 18 separate contracts with UT-Battelle, the U.S. Department of Energy's operating contractor. Over more than two decades, the team has supported ORNL's evolving operational needs through field surveying, roadway design, traffic analysis, and safety improvements across the laboratory's sprawling campus.

Specific project work included the complete design of the main entrance roundabout intersection, guard portal approach, and departure lane design at multiple locations. Ardurra also designed traffic signals and performed timing optimization, conducted traffic safety studies addressing site-specific challenges, and developed parking analyses for various campus areas. Additional services covered crosswalk and pedestrian safety improvements, traffic calming for internal roadway systems, signing and pavement marking design, and transit strategy development.

Key Highlights:

• Sustained a 20-plus year consulting relationship with ORNL across 18 contracts, providing continuity of service as the laboratory's transportation needs evolved.

• Designed the main entrance roundabout and guard portal approach, improving traffic flow and security operations at a high-security federal research facility.

• Delivered traffic signal design and timing optimization, along with calming measures for internal roads, enhancing day-to-day safety for ORNL staff and visitors.

• Addressed pedestrian safety through dedicated crosswalk studies and improvements, supporting a campus environment with significant foot traffic across a large, active site.

By maintaining a long-term presence at ORNL, Ardurra has helped the laboratory sustain a safer, more efficient transportation network that keeps pace with the demands of a world-class research environment.