Traffic backed up on Interstate 95 northbound just past the Hanover Street exit on Thursday after a truck spilled about 50 gallons of gasoline on the roadway, a city fire spokesman said.

The spill caused the two right lanes of the interstate to be closed, said a spokesman with the Maryland Transportation Authority, which maintains the section of the interstate where the spill occurred.

City fire personnel responded to the spill after receiving a call at about 11:45 a.m., said Chief Kevin Cartwright, the fire spokesman.

Clean-up and spill mitigation units responded by 1 p.m., and the spill was cleaned up without causing environmental impacts, Cartwright said.

The truck nor its driver were identified.

John Sales, the MTA spokesman, said all lanes had reopened by about 3:40 p.m.

krector@tribune.com