Curve. At a cost of $26 million, construction lasted for two years building a new overpass and reshaping the sharp curve to a more gentle one. It was completed seven months early in the middle of 2000. Brief Greensboro extension In February 2008, I-40 was rerouted onto new freeway south of Greensboro, becoming part of the Greensboro Urban Loop. The old route through Greensboro became an extension of I-40 Business, with a hidden concurrency along I-40/US 421, between exits 206 and 212. This extended the route , ending at a new terminus with I-85/I-40, near McLeansville. However, NCDOT officials received many complaints by local residents and motorists on the confusion between the new I-40 and I-40 Business. Another issue was that funding for construction and repairs on the old route was slashed since it was no longer designated as an Interstate (Interstate business routes are not officially part of the Interstate Highway System) On September 12, 2008, with permission from the FHWA, I-40 was moved back to its old route through Greensboro, decommissioning Business 40 through Greensboro. Macy Grove Road interchange Construction began in June 2013 on the first phase of a project to extend Macy Grove Road around the east side of Kernersville. Macy Grove Road, which previously passed over Business 40 with no interchange and ended at Old Greensboro Road, was extended to a temporary terminus at a connector to East Mountain Street, with a diamond interchange built connecting it to Business 40. The extension and interchange opened in May 2015, at which point the former partial interchange with East Mountain Street immediately east of the NC 66/NC 150 interchange was closed and demolished and the westbound roadway through the former interchange realigned closer to the eastbound roadway. In October 2020, NC 150 was rerouted onto Macy Grove Road from the Salem Parkway interchange to the Main Street intersection as Macy Grove Road was extended north from its section built in 2015. Salem Parkway In 2006, the North Carolina Department of Transportation (NCDOT) decided to rebuild the freeway between Fourth Street and Church Street, which covers most of the original section of the East–West Expressway from 1958. For the next ten years, NCDOT made several studies and a series of public meetings before awarding a design-build contract with Flatiron Constructors, Inc./Blythe Development Company Joint Venture and HDR Engineering, Inc., in September 2016, to complete the final design and