THE BRONX - Metro-North resumed normal service in and out of Grand Central Terminal Friday for the first time since a fire erupted under tracks in East Harlem.

Passengers should expect some delays resulting from track-speed restrictions, which the railroad said it hopes to clear in the coming days.

The railroad worked to complete temporary repairs to the section of elevated tracks that were damaged by the fire at a garden business under the tracks. The railroad said Thursday that crews had "safely completed the installation of six temporary steel columns to brace a column damaged in Tuesday's fire."

An estimated 150,000 passengers endured overcrowded trains with limited service after the fire.

On Wednesday, fire marshals ruled the fire an accident, saying it was caused by fuel that was spilled on a hot generator while it was being refilled. FDNY spokesman Jim Long said the department hadn't issued permits for the handling or storage of fuel or propane at the location.

Associated Press reports contributed to this story.