tumble
break
crash
topple
crack
implode
collapse
slump
break down
snap
to collapse, down, down, down, down, in, crumple
''Silta vaarassa romahtaa – liikenne ohjattu kiertotielle''
A bridge in danger to collapse – traffic detoured
to crash, collapse, slump; (''of prices, rates'') to go into a tailspin, spiral downwards, plummet.
To collapse, down, up.