Today a train has travelled under the bridge for the first time as part of a three month testing period in the new twin metro railway tunnels.
A train has gone under the Sydney<a href= Harbour Bridge for the first time as a new railway tunnel is tested.”/>
A train has gone under the Sydney harbour Bridge for the first time as a new railway tunnel is tested. (NSW government)

The train went through the tunnel at the conservative pace of 25km/h but there are plans to move into “high-speed testing” when the locomotives will top 110km/h.

Sydney Metro CEO Peter Regan said testing would continue throughout 2023 and passenger testing would begin in 2024.

“Each train will also undergo acceleration and…

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