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.
That sounds truly horrifying. My intuition about molasses at that volume is all wrong.
[0]https://en.wikipedia.org/wiki/Dublin_whiskey_fire
https://en.wikipedia.org/wiki/Mont_Blanc_Tunnel_fire (1999, 39 dead)
>> The fire burned for fifty-three hours and is estimated to have reached a temperature of 1,000 °C (1,830 °F), mainly due to the margarine load in the trailer, equivalent to a 23,000-litre (5,100 imp gal; 6,100 US gal) oil tanker