Hato Hone St John attended but referred the Chronicle to police for more information.
Fire and Emergency attended with two trucks from Whanganui.
During the closure, NZ Transport Agency Waka Kotahi (NZTA) told motorists to delay travel or use an alternate route via SH1 which would add at least two hours to travel time.
NZTA said the road reopened at 2.40pm
Erin Smith is a multimedia journalist based in Whanganui.