Toll charges at Dublin's East Link Bridge - the Tom Clarke Toll Bridge - will decrease next week after a ruling that VAT should not be charged on State-owned roads.
The decision will see a €0.35 saving on individual car journeys, with four-axle trucks saving €0.95 per trip.
Dublin City Council said the new tariffs will come into effect on Friday, 18 August.
The price of a car journey across the bridge will fall from €1.75 to €1.40, the charge for vans and buses will drop by €0.50 to €2.10, and a two-axle toll will drop from €3.50 to €2.85.
The changes follow a ruling earlier this year from the European Court of Justice, which determined VAT should not be collected on State-owned roads.
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Transport Infrastructure Ireland said there will be no reduction in toll charges on Dublin's M50 or at the Port Tunnel.
The East Link Bridge was constructed by private operators but came back into public ownership in 2015.
It opened in 1984 under a 30-year public-private partnership.
The income had been split between the City Council who got 17%, the Dublin Port Company (25%) and the Dutch operating company DIF (58%).
Now the council gets 100% of the approximately €4m annual income generated by tolls.
Traffic levels peaked in 2008 at 22,000 vehicles a day, but it is now down to around 16,000 daily.