Briley Parkway, Ellington Parkway and I-65 Interchanges

The Tennessee Department of Transportation (TDOT) identified a need to increase traffic capacity along Briley Parkway from I-40 east of Nashville to I-65 north of Nashville. The existing interchange configuration at Ellington Parkway was insufficient to accommodate the widening of Briley Parkway from four to eight lanes and did not provide for direct connection to adjacent I-65. The underlying challenge at this location was to provide these interchange improvements while maintaining existing traffic flow and, ultimately, provide a direct link to I-65 for both Briley and Ellington Parkways.

GS&P was hired to design a 1.3-mile section of Briley Parkway (SR 155), a crucial urban arterial that moves traffic through and around Nashville. The final design consisted of reconstruction of Briley Parkway to a full interchange  while providing slight modifications to the existing ramps and adding flyover ramp connections from Briley/Ellington Parkway to I-65. This included the addition of three bridges, nine retaining walls and one noise wall. Reconstruction of Briley Parkway involved widening from four to eight lanes, with additional 12-foot auxiliary lanes and a barrier divided median. The existing Briley Parkway bridges were replaced with dual 120-foot single span structures, east and westbound. The Briley/Ellington Parkway to I-65 ramp connections consist of a seven-span, 1,450-foot continuous superstructure, crossing four roadways and carrying two lanes of traffic and a two-lane curved flyover bridge 1,570 feet in length. We also developed work zone and traffic control plans to provide a safe travel way for the motoring public and a safe site for construction crews.

During construction, we received positive input from the media and motorists alike, who commented that traffic flow through the area was better during construction than before the project began. The project provides direct access between Briley/Ellington Parkway and I-65 as intended with minimal need for additional right-of-way. By eliminating the existing weaving sections, the design produced the desirable level of service for the design year traffic by significantly reducing congestion.

Share This Page: