Firefighters battled a blaze at a premises on Main Street, Bray this morning.
Emergency services attended the scene in the early hours.
Gardaí and the local county council advised people to avoid the area.
Meanwhile, Dublin Bus and Go-Ahead Ireland services have diverted their 84 and 145 routes from the Main Street.
"We'll keep you all updated on the status of this incident and the effects on our services," Go-Ahead Ireland wrote online.
The incident was expected to cause significant delays for commuters.