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John A. Roebling Suspension Bridge

John A. Roebling Suspension Bridge is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand John A. Roebling Suspension Bridge rather than just read about it. In short: The John A. Roebling Suspension Bridge (formerly the Cincinnati-Covington Bridge) is a suspension bridge that spans the Ohio River between Cincinnati, Ohio, and Covington, Kentucky.

John A. Roebling Suspension Bridge — main illustration
John A. Roebling Suspension Bridge — illustration

Key takeaways

  • John A. Roebling Suspension Bridge belongs to engineering; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect John A. Roebling Suspension Bridge to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of John A. Roebling Suspension Bridge from memory before moving on to harder problems.

Reference excerpt

The John A. Roebling Suspension Bridge (formerly the Cincinnati-Covington Bridge) is a suspension bridge that spans the Ohio River between Cincinnati, Ohio, and Covington, Kentucky. When opened to traffic on January 1, 1867, it was the longest suspension bridge in the world at 1,057 feet (322 m) main span, before being overtaken by the Niagara Clifton Bridge, which was later surpassed by John A. Roebling's most famous design of the 1883 Brooklyn Bridge at 1,595.5 feet (486.3 m). Pedestrians use the bridge to get between the hotels, bars, restaurants, and other amenities in Northern Kentucky. The bar and restaurant district at the foot of the bridge on the Kentucky side is known as Roebling Point.

Planning and charter In the mid-19th century, need of a passage over the Ohio River became apparent. Commerce between Ohio and Kentucky had increased to the point that the highly congested steamboat traffic was constricting the economy. A solution that would not constrict traffic on the river even further was a wire cable suspension bridge of the type developed by French engineers. Several American engineers had begun designing and building suspension bridges. One of these men was John A. Roebling of Saxonburg, Pennsylvania. The Ohio River, however, was much wider than any river that had been bridged in France. The Covington and Cincinnati Bridge Company was incorporated in February 1846, and the company asked Roebling to plan a bridge. The brief outline of his ideas called for a 1,200-foot (370 m) span with 100 feet (30 m) of clearance at high water to allow steamboats to pass unobstructed, but it included a monumental tower in the middle of the river. Steamboat and ferry interest groups lobbied against this plan. They feared an obstructed waterway, loss of a ferry market, and depreciation of property. The Ohio legislature refused the charter of the bridge. In September, Roebling published a 36-page report containing a technical discussion and an analysis of said problems. He attacked steamboat operators for using oversized chimneys, speculated on future commercial interests, and surmised on the importance of spanning western rivers. Roebling also specified that the company should make the decision as to the placement of the bridge along the river. Still, no charter was granted. After observing the construction of a suspension bridge upriver, in Wheeling, Virginia (later West Virginia), the legislature relented and passed the charter, mandating excessive dimensions such as a 1,400 feet (430 m) main span and requesting that the legislature determine the bridge location. This latter provision would later be regretted by everyone involved. The roads of Cincinnati and Covington were laid collinear with each other, in the hope that a bridge would be built sometime in the future. When the Ohio legislature decided to choose its own location for the bridge, it failed to pick such an obvious spot, hoping to defend Cincinnati's preeminence over Newport and Covington, the rival Kentucky cities. The bridge was actually located almost entirely in Kentucky because the state boundary follows the north bank of the river. It deprived Cincinnati forever of one of "the finest and most magnificent avenues on this continent." In 1854, a small suspension bridge over the Licking River at Newport, Kentucky, collapsed. This event deterred investors, and the bridge company could not raise enough money to start construction. Amos Shinkle was elected to the board of trustees in 1856. He brought with him a much needed boost of energy. Shinkle immediately managed to find new private investors and to procure more support from both the Ohio and Kentucky governments. During this time the bridge charter was revised, and the span of the bridge was reduced to a minimum of 1,000 feet (300 m). By now, Roebling had established a reputation. President Ramson of the bridge company traveled to see Roebling, who was in Iowa, and he secured a contract to build the bridge. In September, Roebling arrived in Cincinnati, and much to his disgust, nothing was prepared.

History

… excerpt ends here. Continue reading the full article.

Illustrations

John A. Roebling Suspension Bridge illustration
John A. Roebling Suspension Bridge illustration
John A. Roebling Suspension Bridge: Carte de visite of the "Suspension Bridge Cincinnati" (from a stamp on the back), taken from Covington looking toward Cincinnati, ca. 1870
Carte de visite of the "Suspension Bridge Cincinnati" (from a stamp on the back), taken from Covington looking toward Cincinnati, ca. 1870
John A. Roebling Suspension Bridge: The Roebling Suspension Bridge in 1907
The Roebling Suspension Bridge in 1907
John A. Roebling Suspension Bridge: The tower of the bridge features two golden plated Greek Cross finials. The U.S. and Ohio flags are displayed in the center.
The tower of the bridge features two golden plated Greek Cross finials. The U.S. and Ohio flags are displayed in the center.

Worked examples

Example 1 — a first encounter with John A. Roebling Suspension Bridge

Start with the simplest possible case. Write down what John A. Roebling Suspension Bridge claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to John A. Roebling Suspension Bridge before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about John A. Roebling Suspension Bridge ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of John A. Roebling Suspension Bridge

In research
John A. Roebling Suspension Bridge appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses John A. Roebling Suspension Bridge in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
John A. Roebling Suspension Bridge is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1866 establishments in Kentucky, 1866 establishments in Ohio, Bridges completed in 1866, so understanding it makes those chapters shorter.
In everyday life
Look for John A. Roebling Suspension Bridge outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study John A. Roebling Suspension Bridge in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what John A. Roebling Suspension Bridge means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain John A. Roebling Suspension Bridge out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is John A. Roebling Suspension Bridge in simple terms?

The John A. Roebling Suspension Bridge (formerly the Cincinnati-Covington Bridge) is a suspension bridge that spans the Ohio River between Cincinnati, Ohio, and Covington, Kentucky.

Why does John A. Roebling Suspension Bridge matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study John A. Roebling Suspension Bridge?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on John A. Roebling Suspension Bridge.

Tags

  • 1866 establishments in Kentucky
  • 1866 establishments in Ohio
  • Bridges completed in 1866
  • Bridges in Cincinnati
  • Bridges over the Ohio River
  • Buildings and structures in Covington, Kentucky
  • Dixie Highway
  • Former toll bridges in Kentucky
  • Former toll bridges in Ohio
  • Historic American Engineering Record in Kentucky
  • Historic American Engineering Record in Ohio
  • Historic Civil Engineering Landmarks

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