Back then bridges were made out of logs tied together with rope. We added mound dirt to help hold bridges together. Bridges were used to cross small rivers. Nothing bigger than 10ft long. Only one car at a time would be able to cross.
Now we use metal to build our bridges. Our bridges can cover rivers as big as the 200ft wide. Now our bridges are also stronger than ever. They can carry up too like 100000 lbs. we have famous bridges like the golden state bridge which the nba team the warriors named there team after.
Bridges in the future will be stronger and more efficient in the future. Maybe even easier to make so less injuries can occur while making them.
Start my final draft sketch of my side view. I have my lines a 1/8 inch thick and tomorrow I will start my measurements
I have measured my bridge andan labeled it. It ended being 133.6 inch so I had over a 100in to use on the crossbars.
I have started my top view and added the cross bars and labeled weather it is too or bottom.
I have label all the measurements on the cross bars and it added up to be 77in so I had a little over 20in to spare.