In March, TAIC added rail worker safety to its list of systemic issues it has with the sector.
The announcement comes after a ferry, owned by Kiwirail, became grounded for 24-hours in Picton.
KiwiRail says the money has not been wasted as the materials can be used elsewhere.
KiwiRail was advised of electricity arcing from overhead electric lines.
Last year there were 28 bridge strikes recorded nationally.
An investigation into a near-miss between two trains last year has found concerns were raised with KiwiRail three years ago.
