In 2005, three segments of twinned Highway 43 opened to traffic including from west of Fox Creek to west of Iosegun Lake, from west of Sangudo to west of Cherhill, and from west of Cherhill to west of Gunn. The twinning of two additional segments of Highway 43 was completed in 2007, including from Asplund Creek (south of Highway 665) to west of Iosegun Lake (south of Little Smoky), and from east of Green Court to west of Sangudo. With these segments completed, over of Highway 43 was continuously twinned from Highway 16 to west of Valleyview.