State Highway 205 or SH 205 is a Texas state highway that runs from SH 78 at Lavon to US 80 at Terrell. This route was designated in 1935 from Terrell to Rockwall, and was extended north to Lavon in 1939. The route has been under heavy construction since 2006 as part of a new expansion and widening project, and is scheduled to be completed in 2011. The highway has a bypass road as well, John King Blvd., which begins near the Collin county border, and ends just before the intersection with Farm-to-Market Road 549.