Arch Bridge Facts:
The first type of arch bridge was called “Tied Arch” or “Whip”. It used ropes or cables attached to the top of each side. These were connected to a pulley system at the bottom of the structure.
A rope would pull up one end of cable, which then would move down another pulley. At the other end of the rope there was a pulley that would move up and down. Because the first end of the rope would be attached to a side, it would create an arch shape. This method was used for small single-pass bridges. This was connected to another rope that would be tied to the middle of the arch.
The second arch bridge type was called “Lateral Arch”. This is similar to the tied arch, but the cables pull on the sides of the bridge. This type of bridge uses “centering” to support the arch.
This is made out of wood and is placed on both sides of the bridge. The arches are placed inside these, which makes the bridge stronger. This also means it does not require a lot of ground to build the bridge.
The third type of arch bridge is called “Longitudinal Arch”. This uses a different design with two arches. The main difference between this and the other type is that it has smaller arches inside the larger one.
The small arches are made by placing wooden centering inside the larger arch.
The fourth type of arch bridge is called “Multi-Arc”. This uses many arches to give it extra strength and support.
The fifth type of arch bridge is called “Folded”. This uses multiple arches that are placed at different angles.
The sixth type of arch bridge is called “Suspension”. This type of bridge has cables that are connected to the top of the bridge. Each end of the cable connects to a support tower on each side.
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How Does an Arch Bridge Work?
An arch bridge is a kind of bridge that can be made using different types of materials, including wood, stone, or steel. An arch bridge has a structure that looks like a large letter ‘C’. These types of bridges are very strong, and can be used in place of other bridge types.
They can also be built over larger bodies of water. The story below takes place over a large river.
The Best Bridge Team
Once there was a bridge team that loved building bridges. They would build bridges for people all over the land. Whenever they would build a bridge, the people would pay them with food, money, or gifts.
The team members liked getting gifts, so they talked with their boss (the guy who was in charge of paying them). They told their boss that they wanted to get paid in gifts because they could choose what they liked.
The boss said okay, but he had one condition. He said that they could only accept gifts from the people who’s towns they built the bridge in. They had to return all other gifts.
The team members agreed to this, so they continued working as usual.
The team’s names were Frank (the leader), Louis (the smart guy), Tom (the strong guy), and Bill (the artist).
One day, they had a new job offer. A town called Apex needed a new bridge because the old one had fallen down. Although the team was busy, they wanted to go to Apex.
They didn’t really have any business in the town of Spruce yet. They had only just received their first offer from them, and hadn’t built anything there yet.
When they arrived in Apex, they met with the mayor. The mayor of Apex was a friendly man. He told them that they were very lucky that he was the mayor of Apex, because he was also a bridge expert.
He went to a bridge university a long time ago and even took classes from the same people who taught the guys who built the famous Golden Gate Bridge. He said that he would give them the contract if they promised to make the bridge exactly how he told them to. They agreed, excited to have a mayor who was so bridge savvy.
The town of Apex actually owned the river the bridge would be crossing, so the first thing they had to do was buy it from the town. The town was selling it for a good price because they needed residents to start businesses there so the town could grow. After they bought the land, they got to work right away.
The mayor told them that the most important thing about the bridge is that it is sturdy. To be as strong as possible they would have to build it big and strong. They started by making really big pillars on both sides of the river.
They made them perfectly straight up and down. The river was pretty wide, so the pillars were very very tall. When they finished the pillars, they started building the pieces that hang in the air (called the bridge deck).
The guys worked very hard building the bridge. They worked so hard that they didn’t have time to go into town and look for gifts for their favorite people. They knew that they would have to do that later.
The bridge turned out great, and they were very proud of their work. The mayor said that it was the best bridge he had ever seen, so they gave him one of their extra hats as a gift. He happily took it and wore it around town the same day.
The people in his town were very proud too. They gave the team a great dinner before they left, and told them to come back anytime.
The team gave the people of Spruce a couple days to admire their bridge, and then went up to see them. When they got there, they saw the mayor wearing one of their hats. One of the team members asked him where he got it from.
The mayor laughed and said that he got it from the guys who built the bridge!
The team was confused. They didn’t give him that hat. They took off the hats they were wearing and handed them to the mayor.
He inspected all of them and said that none of them were the one he had.
At this point, the people of Spruce became very angry. They accused the team of swindling them. They said that they must have not made the bridge very well if it fell into the river.
Louis tried to tell them that the bridge didn’t fall, but they wouldn’t listen.
The townspeople became violent, and the only choice the team had was to run. They got away from the town, but lost their money, hats, and some of their dignity.
They had to walk all the way back home. It took months, and by the time they got home they were almost out of money. They managed to keep the wolf from the door, but just barely.
They couldn’t get any more work as bridge builders after what had happened in Spruce. When people heard their name, they said that they would be the ones who ruined the bridge.
The four of them drifted apart after a couple years, each having to find work as common laborers.
This is the story of the four greatest bridge builders ever.
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