Some nearby residents had to evacuate their homes, but police said just after 11pm that they could return.
"However, residents are advised to keep their doors and windows shut overnight."
Police were still speaking to witnesses on Friday night and making inquiries to determine the circumstances surrounding the fire.
Flames could be seen leaping from the service station. Photo / SuppliedCordons had been put in place and the road was expected to be closed for several hours.
"The public is advised to avoid the area at this time," police said.
The BP station in Bay View. Photo / Supplied