As a registered charity, the NYMR said it relied on its supporters to fund projects of the scale that require specialist materials, skilled contractors, and careful working in a sensitive environment.
Laura Strangeway, chief executive, said: “The repair of Bridge 42 is vital for the future of the NYMR and as a complex project, it is a costly one which is why we are asking for generous support to ensure that we can continue running and secure the future of our much-loved railway.
“The NYMR is much more than a tourist attraction – it is a vital heritage, economic, and community asset that boosts the regional economy, protects railway heritage, and supports local livelihoods.”