I bet there are many more weighing stations here in North America vs. China. It is heavily enforced here with the truckers, whereas, in other parts of the world those truck weights may not be enforced at all.
Speaking of the business lingo, you may call it "corruption or bribery" or whatever makes you feel superior but those same words are called "doing business", everywhere, even here in Canada. At a certain level it is the norm way to get contracts/business. It is unfortunate people are hurt as a result of less steel/concrete/materials used due to greed, however, the reality remains that it does take some grease to get the wheel turning. It is what it is with the pot and kettle.
How do you think many major Canadian engineering/consulting/mining companies get those contracts overseas? Can you say "slushfund" or "petty cash"?
If you so want to satisfy that corruption and bribery idea, just look at the building costs per length unit to make your own conclusion on who consumes more of those corrupted funds. Here are some numbers:
Bridge built Length (feet) original cost Indexed to 2012
Golden Gate 1937 8981 $37 MIL $596.5 MIL
San Diego-Coronado 1969 11179 $47.6 MIL $302.5 MIL
Erasmusburg Bridge 1996 2631 $110 MIL $161.7 MIL
Oresund Bridge 2000 25738 $3.8 BIL $5.1 BIL
Fehmarn Belt Bridge 2018 58080 $2.2 BIL $2.2 BIL
Yangmingtan Bridge 2011 50582.4 $286 MIL $286 MIL