A popular bar in Carrick on Shannon had been damaged in a fire.
Emergency services remain at the scene of a blaze at Gings at the bridge in the town.
The fire has been put out and a clean up operation has been put in place.
It's not yet clear when the blaze started or if anyone has been injured.
The bridge in Carrick On Shannon has been reduced to one lane of traffic following the incident.
Gardai have put a stop-go system in place and have warned motorists to expect delays on the N4 bridge as a result.