Marton Junction School principal Vanessa Te Ua said the state of the underpass was a concern for the school, which has many pupils living on the other side of the tracks.
"Our expectation is that our kids use the subway for their safety because it is a busy railway," she said.
"The alternative way around would be three times as long."
Pupil Joseph Kumeroa walks to school through the subway and has been cut by glass before.
"One morning I walked over a puddle and then I got something in my foot," he said.
Now KiwiRail appear to be coming to the party.
"KiwiRail is aware of the state of the underpass and accepts that work needs to be done to tidy this area up," communications manager Jenni Austin said. "We have already taken initial steps to scope the work needed to give the underpass a facelift."
She said the work would include water blasting, painting, clearing out the drains, improving the fencing on the approaches to the underpass and lighting and would get under way soon.
Project Marton coordinator and Rangitikei District Councillor Cath Ash said it was great the issue had been raised again. "This is the face of Marton. It's one of the things I've always found really disappointing. I would like to see KiwiRail step up."