This is the 6365th most frequent German word.
durchfällen
The German word "durchfällen" is not standard; it may be a mistaken form. If you mean "durchfallen," it means "to fail" (e.g., an exam).
The term 'durchgefallen' here refers to failing or not passing an examination.
Nach der Prüfung hatten viele Studenten das Gefühl, durchgefallen zu sein.
After the exam, many students felt they had failed.
In this context, 'durchfallen' implies structural failure or collapse of the bridge.
Die Brücke könnte diese Belastung durchfallen, wenn sie nicht rechtzeitig repariert wird.
The bridge might fail due to this stress if not repaired in time.
The usage of 'durchfallen lasse' indicates an action that might lead to the failure or abandonment of a project.