The Trans-Canada, also known as Highway 1 was closed in both directions between Mt. Lehman and 264th Avenue to allow crews to repair some high-voltage power lines damaged in the crash.
But just before 8 a.m. PT the highway was reopened to westbound traffic.
Eastbound traffic is still being detoured in Aldergrove toward Highway 1A at 264th Ave.
Officials say the route could remain closed until Tuesday afternoon while BC Hydro crews repair the damage caused by the ultralight plane crash.
BC Hydro says the small plane damaged a major transmission line and the repairs will be long and complicated.
The repairs are being are made more difficult because the damaged line is in the middle of a saturated field — meaning a road will likely have to be built to the site before any work can begin.
An electrical outage in the area around Ross Road, south of Highway 1 was fixed by routing power through other grids.
Pilot killed in ultralight crash
The highway was closed after one man was killed when the ultralight aircraft he was piloting crashed in northwest Abbotsford, B.C., on Monday afternoon.
The aircraft left Abbotsford airport just before 4:30 p.m. PT on its way to Maple Ridge, but disappeared from control tower radar.
Abbotsford police said they were alerted to a possible problem when the aircraft started emitting a beacon signal shortly afterwards from somewhere in northwest Abbotsford.
Police, two search and rescue teams, and a CFBComox Cormorant helicopter began searching for the aircraft, but were hampered by darkness, heavy rain and forested, rural terrain.
Just after 9 p.m., searchers found the plane wreckage and the pilot in an area south of Highway 1 near Ross Road.
The circumstances of the crash and the identity of the deceased are not yet known.