Gardaí are appealing to those attending today's Rod Stewart concert in Páirc Uí Chaoimh to use public transport to access the stadium.
The veteran rocker is set to take to the stage at 8pm Saturday, with no support act. Gates at the stadium will be open from 6pm and it is estimated that the event will finish at around 10.45pm.
The concert has a capacity of 35,000, lower than last year's Ed Sheeran concerts due to the addition of on-pitch seating. Tickets are still available.
In addition to its regular bus services, Bus Éireann will operate an enhanced route 202, with a direct bus from Lapp’s Quay to Monahan Road adjacent to Páirc Uí Chaoimh every 10 minutes from 5pm to 8.30pm.
The area is also served by the 215 bus, with services running every half hour from the city centre to the Silver Key bar, 15 minutes walk from the stadium.
After the concert, both buses will operate their normal schedule. The 202 will depart the Venue Bar in Ballintemple every 20 minutes and the 215 will run from the Silver Key back to the city centre.
Garda Inspector James Hallahan said: "As the doors open at 6pm we can expect delays in and out of Cork City. We are asking motorists and pedestrians to be patient and follow the direction of Gardaí and stewards.
"As always, when travelling to and from the stadium I would ask that patrons respect the local residents and businesses. This is an event for all the family and consuming alcohol out in public will not be tolerated. Have a plan for the evening on how you are getting to and from the event.
"Be mindful of your property. Keep your phone, wallet or purse on you at all times. If you find yourself in a scenario and sense there could be trouble, walk away and call the Gardaí."
Insp. Hallahan added that those who have bought a ticket with disability parking are advised to arrive early before the road closures come into effect. Those without a parking permit are advised to use public transport as additional parking will not be available.
Met Éireann has forecast a dry day - it will be mainly cloudy but temperatures could reach as high as 21 degrees in late afternoon. Temperatures will have dropped to the mid-teens again by 10pm.