Two seriously injured as crash blocks SH1 near Ōhau River Bridge, south of Levin 12 Jan, 2021 12:05 AM Quick Read A crash has blocked SH1 near the Ōhau River Bridge. Photo / NZTA NZ Herald Two people have been seriously injured in a crash in Horowhenua this afternoon. Motorists north of the capital are advised to expect delays after a crash closed State Highway 1 near the Ōhau River Bridge. Police said the crash had involved a motorcycle and a truck, occurring just south of the Ohau Bridge about 12.45pm. By 2pm the patients had been transported from the area via helicopter, and the Serious Crash Unit was on the way.