Closures of several parts of Auckland's rail network may cause some mayhem this weekend as hundreds of league fans are expected to migrate to Mt Smart Stadium for the Tonga vs Australia match on Saturday night.
Auckland Transport's Mark Ireland said several train lines would be out of action this weekend while maintenance work got under way.
"This is not uncommon but it may have some impact on people getting to the game."
He said the Southern line was blocked from Middlemore to Pukekohe to allow for the motorway widening.
"They are also doing some sleeper replacement and some track work while they are closed."