The six-alarm blaze destroyed an apartment complex under construction and a post office branch, but left the bar-and-restaurant district centered around Seventh Avenue unaffected.

``It's basically all concentrated in the Palm Avenue area,'' Annette DeLisle, president of the Ybor City Chamber of Commerce, said Friday.

``It might affect traffic somewhat with people gawking at the ashes,'' DeLisle said, ``but it hasn't affected Seventh Avenue.''

The fire also was not expected to affect tonight's Tropical Heatwave, the annual multiband concert staged by local listener-supported radio station WMNF, 88.5 FM.

Randy Wynne, program director at the radio station, said the fire was at least three blocks away from the site of the concert, which takes place in and around the Cuban Club on 14th Street.