I used to see these signs all the time as a kid:
“bridge freezes before road surface”
I understood what they meant, but they made no sense.
If I’m driving and the bridge is frozen, what do I care, as long as the road surface on the bridge isn’t frozen yet?
And if they meant that the bridge is frozen before the road is then I only need to worry while I’m on the bridge?
Why didn’t they just say bridge road surface may be frozen even if the rest of the road isn’t?
Or just say: “bridge surface is frozen”?