On Easter Monday Labor reiterated a three-year-old funding pledge for the Maldon-Dombarton - but the dollar amount remains the same.
In June 2016 deputy Labor leader Tanya Plibersek visited Port Kembla to pledge $50 million for the Maldon-Dombarton, with a view to sparking interest from the private sector.
On Monday, Labor's Infrastructure spokesman Anthony Albanese visited Port Kembla to promise the same thing.
Mr Albanese said it wasn't an issue that the amount of funding being offered hadn't changed in three years.
"We're being consistent about what we've been saying and what we're putting up," Mr Albanese said.
"It was in the 2013 Budget, this isn't a new commitment. This is something we were going to do when we were in government. Unfortunately, with the 2014 Budget what Tony Abbott did was take money out of this project."
Mr Albanese said Labor would be willing to discuss increasing the funding if it would result in drawing the private sector in to finish the freight rail line.
"The advice we have is what the private sector are looking for is essentially a signal," Mr Albanese said.
"When you have a private sector project, when you have a contribution from government what that does is make it far easier for borrowing to occur and raise private capital for a private sector project."
Mr Albanese said there would be a charge for those who used Maldon-Dombarton, as with other freight lines.
"There's a charge made, but I'm very confident that this project stacks up, it stacks up more today than when we put in money in in 2013," he said.
Mr Albanese said he hoped construction would start in the first term of a Labor government.
This is something we were going to do when we were in government.Anthony Albanese on Maldon-Dombarton funding
Rail Tram and Bus Union national secretary Bob Nanva was in favour of funding for the much-talked about rail link.
"The Maldon-Dombarton link is the Australian transport industry's version of the Loch Ness Monster," Mr Nanva said.
"Everyone talks about it, but no-one has ever seen it.
"This project is crucial for providing a dedicated freight corridor into Port Kembla, therefore removing the need for freight and passenger services to compete for limited space on the Illawarra line."