If you are partial to done bridge engineering (or trivia quizzes) - here is an unusual piece of video and some accompanying information;
Testing the new tallest bridge (625 metres / 2,051 feet) above a river in a canyon, with a bridge span of: 1,420 metres / 4,659 feet.
"...the bridge will upon completion set the record for both the world's tallest bridge and largest span bridge built in a mountainous area."
"The load test is the final step before it is considered safe to welcome traffic. A testing team drove 96 trucks onto designated points to test the bridge's structural integrity."
"...five-day testing process ahead of the scheduled opening in late September."
My understanding is; the load test involved 3.360 tons being moved around sensitive points in the design - to simulate extreme conditions and the normal use maximum capacity of the bridge's.specification.
This new motorway bridge will dramatically reduce travel time in the area from a previous 1 hour - down to less than two minutes.
https://www.bbc.co.uk/news/videos/c5y3rrvl3r2o
Guizhou is a mountainous province in southwest China whose provincial capital is Guiyang.
The province is southwest of Beijing, and northwest of both Guilin and Hong Kong.
https://www.bbc.com/newsround/articles/cz0189lnpryo