Burst water main closes CBD busway A water main burst in the CBD at 2am Tuesday morning. A burst water main has flooded a street in Brisbane's CBD and forced the closure of the King George Square busway. The ""trunk water main"" burst on the corner of Ann and Roma streets about 2am, flooding part of Roma Street and forcing the closure of the King George Square busway. No local water supplies have been affected, but the lifts and escalators at the busway have been damaged. It is understood the 600-millimetre water main is one of the largest ""feeder mains"" connected to reservoirs, which runs beneath the CBD. It could take Queensland Urban Utilities crews up to 12 hours to repair it. Translink has advised commuters who normally catch buses to and from King George Square bus station will need to do so from the Cultural Centre bus station instead. Route 196 and the City Glider buses can take customers from the CBD to the Cultural Centre Bus Station to connect to their normal services. The Myer Centre bus station platform B has also been closed due to the burst water main. All inbound and outbound buses that normally stop at the platform will instead pick up and drop off customers at George Street stop 116 outside the Treasury Casino. Roma Street has been closed between Turbot Street and Ann Street. The King George Square underground car park remains open, but can only be accessed via Adelaide Street. Queensland Urban Utilities chief operating officer Robin Lewis said main breaks usually occur late at night or in the early morning when pressure builds up in the pipelines. "Unexpected bursts can happen to pipelines of any age, especially during prolonged periods of dry, hot weather, which causes earth movement that can break pipes," Mr Lewis said. QUU crews will have to determine what caused the break before they can start repairs. First we had to turn the water off, which we have done. Now we have to determine what caused the problem before we can commence any repairs," a QUU spokesman said. ""It could take most of the day to do that."" Jay Lane from the Australian Traffic Network said peak hour in the CBD would be ""messy"." ""It may cause some significant dramas during peak hour this morning,"" Mr Lane said. ""There's going to be traffic banking up on Adelaide and Turbot streets. It's not going to be too good I think."" Affected bus services include: