A truck carrying 27 tons of Norwegian caramelized goat cheese caught fire in a tunnel in northern Norway in 2013; it burned for five days in part because the tunnel's liner was flammable...

https://www.reuters.com/article/lifestyle/cheese-fire-causes...

Extensive repairs and upgrades were required -- it apparently took years before the tunnel was fully reopened to bidirectional traffic.

https://www.youtube.com/watch?v=Aat0VskBS4A