Reminds me of the taxiway at the old Denver Stapleton Airport. There was nothing weirder than driving on I-70 and seeing a huge jet taxiing ABOVE you.
I think the caption writer needs a refresher in physics: “ The aqueduct is made up of 22,000 cubic meters of concrete to support the weight of the water and boats above the motorway below.” Does the supported weight change when there is a boat directly overhead?
Reminds me of the old story of the truck driver banging on his cargo trailer to get the canaries flying so he could safely cross the bridge.
Mitchell Intl in Milwaukee has one runway going over a 4-lane road.
“Does the supported weight change when there is a boat directly overhead?”
Archimedes has the answers you seek. A boat floats by definition because it is displacing an equal amount of water vs the total weight of the boat. I say weight and not mass as weight is mass plus gravity which is the actual physics component governing displacement in earth’s gravitational field. A boat of equal mass would float higher in the water and displace less fluid on the moon due to the moon having one quarter the gravitational pull of earth.