State Route 320 (SR 320) is a west-east state highway located entirely in Hamilton County in southeastern Tennessee. it traverses mainly the eastern portions of the county, including Chattanooga’s eastern outskirts and the census designated place of East Brainerd. Route description SR 320 is known as East Brainerd Road its entire length, and begins at an intersection with Lee Highway (US 11/64/SR 2) near the Chattanooga Metropolitan Airport. From here SR 320 travels eastward as a two lane road to traverse I-75/US 74’s Exit 3 interchange, where it widens to five lanes, including a center turn lane. SR 320 continues eastward through the community of East Brainerd, before ending at a four way intersection with SR 321 just south of Collegedale. TDOT has been working since 2015 to widen the route to four lanes to this point, and some of this project is already complete. Although the state route designation ends at this point, a county maintained road also labeled as East Brainerd Road continues east to SR 317 in Apison, and some maps show this portion as part of SR 320. Major intersections See also References Mileage retrieved from DeLorme Street Atlas USA Official Tennessee Highway Maps External links Tennessee Department of Transportation 320 320 320