Leonardo da Vinci's two-level bridge
By Judy Evans
@JudyEv (344822)
Rockingham, Australia
September 3, 2017 1:33am CST
One of Leonardo da Vinci’s innovations was a two-level bridge. He came up with this idea after the plague had killed so many in Italy. He thought that better traffic circulation might improve the health of cities. The idea was that pedestrians would use one level while the other would be used solely by vehicles for transporting such things as goods and waste.
The notice said that ‘its ‘triangulation’ structure was highly innovative for the time, with each diagonal crosspiece supporting the next’. Also, ‘the height of the rectangle is equal to the diagonal of the square of the base. This proportion can be found today in the A4 paper format, 21 x 29.7cm.’
Isn’t that something? I’ll never remember these details but I take photos of many of the information sheets then type them up later because I know if I don’t I won’t be able to pass on the information. Now it’s up to you to remember it!
16 people like this
16 responses
@andriaperry (117917)
• Anniston, Alabama
3 Sep 17
Cool! I am learning so much from you!
5 people like this
@Asylum (47893)
• Manchester, England
3 Sep 17
Despite having quite a good knowledge of Leonardo da Vinci's inventions, concepts and designs, I had no knowledge of such a bridge format.
I was also unaware of this novel fact concerning A4 paper, which is the standard format here in England.
3 people like this
@silvermist (19702)
• India
3 Sep 17
The information about the two level bridge is new for me.Thank you for passing the information to us.Now we just have to remember it.
2 people like this
@JudyEv (344822)
• Rockingham, Australia
4 Sep 17
Yep, I've told you the facts. Now you have to do the remembering!
@JohnRoberts (109846)
• Los Angeles, California
3 Sep 17
That da Vinci was a genius beyond his art.
2 people like this
@sumofalltears (3988)
• United States
4 Sep 17
An interesting fact, which has been put to use at least once that I know of, Da Vinci was a man with vision and many different talents.
1 person likes this
@annierose (21570)
• Philippines
3 Sep 17
I can relate with you. I hope I can always have a time to write soon after my trip. The last time I wrote something on my blog, I found out I forgot so many details. Thank God, my boyfriend who travelled with me could still remember other details.
1 person likes this
@JudyEv (344822)
• Rockingham, Australia
4 Sep 17
I've been trying to write up details at the end of each day but that's just basic stuff.
@JudyEv (344822)
• Rockingham, Australia
4 Sep 17
Some of his 'war-machines' were pretty incredible too.
@RasmaSandra (82052)
• Daytona Beach, Florida
3 Sep 17
That is an amazing bridge. Did you walk or drive on it?
1 person likes this
@just4him (318927)
• Green Bay, Wisconsin
3 Sep 17
Thanks, like I'm going to remember that. I will remember seeing this bridge though. It's beautiful! And what a great idea! Just goes to show Leonardo da Vinci was more than a sculptor. I think he put the airplane down on paper too, though nothing came of it for a couple centuries. The bridge is brilliant!
1 person likes this
@Morleyhunt (21744)
• Canada
3 Sep 17
I'm always surprised that there aren't more two level bridges. Think of the traffic congestion they could ease.
1 person likes this
@JudyEv (344822)
• Rockingham, Australia
4 Sep 17
That's true. I hadn't thought of that but perhaps they'd be huge congestion at each end.
@teamfreak16 (43418)
• Denver, Colorado
5 Sep 17
It's just amazing, the things that guy came up with.