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James Buchanan Eads (1820-1887)



James Buchanan Eads James Buchanan Eads James Buchanan Eads.

James Buchanan Eads, engineer and inventor of ironclad warships, circa 1870.

[Courtesy of the Library of Congress]
James Buchanan Eads spent his life solving difficult engineering problems that made life on and around the Mississippi River
The Mississippi River runs south from northern Minnesota to the Gulf of Mexico and is considered the chief river in North America's largest drainage system. Bordering Missouri on the east, the river flows for 2,530 miles. Along with the Missouri River and several other tributaries such as the Ohio River, the Mississippi became part of the nation's first major transportation system in the early 1800s after the invention of the steamboat. Missouri has historically engaged in international trade by shipping and receiving goods along the Mississippi through the port of New Orleans, which lies at the river's mouth.
safer and more convenient. Eads created a business that removed dangerous debris and shipwrecks from the river. He also designed an armored steamship that helped the Union
Union is the term used to identify the United States and its government during the Civil War.
seize and maintain control of the Mississippi River during the Civil War
The Civil War was a military conflict that began on April 12, 1861, when Southern forces fired on Fort Sumter outside of Charleston, South Carolina. Several Southern states had seceded from the United States (also known as the Union) and formed the Confederate States of America (also referred to as the Confederacy) out of fear that the United States' newly elected president, Abraham Lincoln, would not allow the expansion of slavery into new western states. Battles and skirmishes were fought throughout the country by Union and Confederate forces. General Robert E. Lee surrendered to Union General Ulysses S. Grant at Appomattox, Virginia, on April 9, 1865. As other Confederate forces heard the news of Lee's surrender, they surrendered as well and the war was soon over. Over half a million men were killed or wounded in the war. Thousands of former slaves gained their freedom. After the war, the Thirteenth, Fourteenth, and Fifteenth Amendments to the Constitution were passed prohibiting slavery, providing equal protection for all citizens, and barring federal and state governments from denying citizens the right to vote due to their race, color, or status as a former slave.
. His most important engineering achievement was designing and building the first bridge to cross the Mississippi River at St. Louis. His bridge provided a crucial connection between Missouri and eastern cities.

Early Years and Education

St. Louis St. Louis, Missouri, 1837 St. Louis, Missouri, 1837.

St. Louis at the time the Eads family arrived was largely confined to the riverfront area.

[The State Historical Society of Missouri, Map Collection (751-235_Un3_1837)]

James Buchanan Eads was born on May 23, 1820, in Lawrenceburg, Indiana, to Thomas C. Eads and Ann Buchanan Eads. Thomas Eads worked as a merchant in Lawrenceburg and later in Louisville, Kentucky, when James was a child. Because his business was struggling, Thomas decided to move his family to St. Louis in 1833. Ann traveled ahead of her husband with thirteen-year-old James and his two sisters aboard a steamboat called the Belle West. As the boat approached their destination, alarm bells began to ring, announcing that the Belle West was on fire. The captain managed to steer the steamship to the riverbank, and the Eads family safely disembarked. Their possessions, however, were destroyed when the ship burned and then sank to the bottom of the river.

In St. Louis, James peddled apples around town to help his struggling family. By the winter he realized that selling fresh fruit would not provide him with enough money to last through the year. Soon he found a job running errands for Barrett Williams, who owned a dry goods store. Williams saw that James did not attend school, since his family needed him to earn extra income. Recognizing the boy’s intelligence, Williams opened up his personal library to James. With access to the merchant’s books, James taught himself to solve complex engineering problems.


River Salvage

Letter to Martha Letter to Martha Letter to Martha.

In this 1845 letter to his future wife Martha, Eads recounts the conversation with her father where he says that Eads has not proven his ability to make money and is therefore not the best choice for his daughter.

[James Buchanan and Martha Nash Dillon Eads Papers (C4189), The State Historical Society of Missouri Manuscript Collections-Columbia]

Letter Transcription

Dearest Martha,

Believing my interview with your father today would possess considerable interest to you, I have sketched this little narrative, after an interval of eight or nine hours and whilst it is still fresh upon my memory, for your special benefit. I have endeared to retell it verbatim. Some of the conversation may have slipped my recollection, but the main points are given.

When the Col. had completed his account of the grate of Chateau Avenue, which was soon after you left the room; I remarked to him that I had called to speak to him upon a subject that might probably surprise him, that I was ardently attached to his daughter and wished to beg his consent to make her my wife. During this brief prologue, your Father, who had been walking back and forth, approached the piano and filled a glass with water. Whilst thus engaged I could perceive that slight-yet-significant shake of the head peculiar to him, which told me that so much of my fate as lay in his hands, was sealed. 'Well this is a matter which cannot be decided hastily; though I am afraid Mr. Eads that I can give you no encouragement." I expressed a hope that if he could not give his consent at once, he would at least weigh the matter well before making a refusal. "Yes," said he, "I will think of the matter, but I have several objections to make, though not one, personally, for I esteem you very much, having always found you polite and respectful, and I value your friend-ship. But in selecting a husband for my daughter I must see that a man knows how to make money, for if he can't make it and save it when he is young, he never will, and I don't know that you can show any evidence of it.”

After five years of working for Williams and enjoying the use of his library, Eads took a job on a steamship. While traveling the Mississippi River, he experienced the danger that submerged logs posed to steamships firsthand when his boat, the Knickerbocker, hit a snag and sunk. Though the crew escaped, the boat’s valuable cargo of lead bars sank to the bottom of the river. James began to design a diving bell that would allow a person to work underwater and find lost cargo. At the age of twenty-two, he took his design, which he called a submarine, to a pair of shipbuilders, Calvin Case and William Nelson. The three men went into the river salvage business together based on Eads’s design. Beginning in 1842, their salvage business operated on the Mississippi River from Galena, Illinois, to the Gulf of Mexico. Eads and his company were able to rescue lost freight that included valuable metals and other durable materials.

Starting a business made Eads “feel fully competent to support” his sweetheart, Martha Dillon. He wrote to her father, Colonel Patrick Dillon, to ask for permission to marry her. After some difficulty getting Colonel Dillon’s approval, the two were married in St. Louis on October 21, 1845. They had two daughters, Eliza and Mattie. Because he worked on the river, Eads often wrote letters to Martha about interesting experiences away from home. In one, he described an occasion when his workers broke open a sunken ship and casks of bacon surfaced and floated away. Eads and his crew “started for the swinish treasure, after a half mile hard pulling we overtook one cask.”


Armored Steamships

Edward Bates Edward Bates Edward Bates.

Edward Bates was an attorney in Missouri before serving as attorney general in President Abraham Lincoln's cabinet.

[Courtesy of the Library of Congress]

When the United States erupted into civil war, Eads wanted to use his knowledge of the western rivers and his engineering skills to help the Union. In 1861 he wrote to Edward Bates, the US attorney general, to suggest that the Union needed to build a fleet of armored steamships for use on the river. Bates, who was from Missouri, summoned Eads to Washington to make the case for a river navy in the West. Soon after the meeting, the army advertised for bids, and Eads’s design won the contract to build warships. He promised to build seven steamships with iron plating within just sixty-five days. The ships were called “ironclads.”

USS St. Louis USS St. Louis USS St. Louis.

The USS St. Louis was the first ironclad steamship built in the United States.

[Courtesy of the National Archives]

Because the country was at war, supplies and workers were difficult to find. The first of the gunships, the St. Louis, launched five weeks after Eads started work. Eads failed to build all seven ships in sixty-five days, but after one hundred days the last of the seven entered the Mississippi River. Eads wrote to President Abraham Lincoln that the “St. Louis was the first iron clad built in America…She was the first armored vessel against which the fire of a hostile battery was directed on this continent.” Eads’s ironclads were important in helping the Union to regain control of the Mississippi River. In August 1864, four of Eads’s ships helped defeat Confederate forces in the Battle of Mobile Bay. Armored steamships allowed the Union to resume shipping along the western rivers.


Battle for a Bridge

 Gasconade River Bridge Gasconade River Bridge Gasconade River Bridge.

On November 1, 1855, the Pacific Railroad inaugural train left St. Louis for Jefferson City, with 600 passengers. The train plunged into the river when the Gasconade River Bridge collapsed, killing 31 people.

[The State Historical Society of Missouri, Art Collection (026219)]
Eads continued to show his talent for innovation after the war. By that time, railroads were helping to transport people and goods from eastern cities to St. Louis much faster than ever before. Once the train arrived across the Mississippi River from St. Louis, however, the cargo had to be removed and ferried to the city by boat because there was no bridge closer than Rock Island, Illinois, more than 250 miles to the north. Though Eads had devoted much of his life to river travel, he recognized that “truly, these railroads are a great invention!” Not only could trains travel to many places that could not be reached by boat, but they could get there at speeds that steamships on the river could never match.

Following the Civil War, leaders in St. Louis wanted to strengthen the city’s economic outlook. The war had disrupted river-based trade through St. Louis. Meanwhile, Chicago saw its trade increase through growing connections to railroad networks. By the winter of 1866-1867, many St. Louis business leaders had realized that their city was losing control of the region’s economy to Chicago. They believed a railroad bridge would help return St. Louis to prominence as a commercial hub. St. Louis promoters began to make plans for a bridge.

At the same time, the Chicago bridge builder Lucius Boomer convinced Illinois lawmakers to grant him the right to build a bridge for St. Louis. Boomer had close connections to Chicago, and some St. Louisans worried he might try to sabotage the project. Some also remembered that the Gasconade River Bridge, which collapsed in 1855, had been built by Boomer. Like many in St. Louis, Eads lost friends in the bridge disaster, which killed thirty-one passengers on a train that had embarked from St. Louis. Calvin Chase, one of Eads’s river salvage partners, had died in that crash.

Though he had never designed a bridge before, Eads prepared a plan that met the requirements laid out by the legislature. Because the river supported freight shipping, the bridge had to have a central span of five hundred feet to allow large ships to pass beneath it. Eads decided to use steel to achieve this difficult engineering goal. At the time, steel was not commonly used as a building material. Boomer and Eads presented their competing designs before a convention of engineers that Boomer had assembled. Though many of the engineers supported Boomer’s design, the public discovered that he had schemed to manipulate their decision. In January 1868, Boomer conceded the design competition to Eads, leaving the self-taught engineer in control of the project.


Building the Eads Bridge

Under Construction Under Construction Under Construction.

The Eads Bridge under construction, 1870s.

[Courtesy of the Library of Congress]
The use of steel allowed Eads to build a bridge with a central span wide enough for river traffic to safely pass underneath. But Eads also faced another engineering challenge. His knowledge of the river’s strong currents made him realize that the bridge would have to be exceptionally sturdy. Each of the piers holding the bridge above the river had to go deep underground to the bedrock so they would not sink or move. Eads had to devise a plan to sink his brick-and-stone piers through water and ground to a depth of over one hundred feet. He decided to use water-tight structures called caissons from the bottom of the river to the surface. Large pumps removed water from inside the structures. Crews of workers, called submarines, shoveled the sand at the bottom of the river into large pumps. As the workers removed the sand, the piers were slowly lowered into the hole. Curious to witness this feat, hundreds of spectators traveled down the stairs of the caissons to experience the feeling of being underground. The work itself proved to be dangerous; of the six hundred submarines involved in building the caissons, over one hundred got sick from the working conditions, and fourteen died.
The Eads Bridge The Eads Bridge The Eads Bridge.

Taken from the west bank of the Mississippi River, this image shows the Eads Bridge and the excursion boat, the SS Admiral.

[Charles Trefts Collection (P0034), The State Historical Society of Missouri, Photograph Collection]

A final challenge came with Eads’s choice of steel as the building material. Structural steel had never been used on a project as big as the bridge. Several manufacturers expressed interest in producing the steel, but after seeing Eads’s demanding requirements, many withdrew their bids. The Keystone Bridge Company in Pittsburgh, Pennsylvania, agreed to produce the steel, but their product did not pass the stress tests designed by Eads and his engineering team. Even after improving the manufacturing techniques, the steel still failed in 10 percent of the tests. Eventually, Eads decided to use chrome steel, which proved easier to work with and became a standard building material in later years. In all, the bridge contained over 13 million pounds of steel, iron, and wood when completed.


A Short-lived Celebration

On July 2, 1874, thousands of people gathered to celebrate the completion of the bridge. Eads planned to provide a demonstration of the strength of his steel structure. In an attempt to promote public confidence, the scientifically minded engineer agreed to an informal test first: an elephant was brought in to cross over from St. Louis to Illinois. People believed that elephants had an ability to know if a structure would collapse. When the elephant stepped onto the bridge without hesitation, the crowd cheered.

Eads also had a bigger demonstration in mind: fourteen locomotives loaded with water and coal to travel back and forth across the bridge. During this show of strength, spectators filled the upper deck from one side of the river to the other. This demonstration succeeded as well. Yet despite the celebration at its opening, the bridge did not immediately improve St. Louis’s economy. Railroad companies initially boycotted the bridge, choosing to ferry their goods across the river in the bridge’s shadow because they owned a substantial share of the Wiggins Ferry Company. Eads’s company therefore went bankrupt a year after the bridge was completed. By the time of his death on March 8, 1887, Eads had not yet seen his bridge become successful. Only in the 1890s would the Terminal Railroad Association of St. Louis manage to fully integrate the bridge into the national network of railroads.



Eads Bridge Eads Bridge Eads Bridge.

The Eads Bridge in 1874, shortly after opening.

[Courtesy of the Library of Congress]
James Buchanan Eads used his engineering ability to enhance transportation along and over the Mississippi River. Though he had no formal training, Eads changed the way that large bridges were built by pioneering the use of structural steel. His vision and demanding specifications resulted in a bridge connecting St. Louis to Illinois and the East that continues to stand today. Eads’s activity as an engineer earned him membership in many scientific societies, including the American Association for the Advancement of Science.

Text and research by Zachary Dowdle


References and Resources

For more information about James Buchanan Eads’s life and career, see the following resources:

Society Resources

Selected Bibliography

A selected list of books, articles, and manuscripts about James Buchanan Eads in the research centers of The State Historical Society of Missouri. The Society’s call numbers follow the citations in brackets.

  • Articles from the Missouri Historical Review
  • Articles from the Newspaper Collection
    • “The Bridge.” St. Louis Republican. June 15, 1874. p. 8.
    • “Building the Bridge: An Important Problem Solved.” St. Louis Republican. March 1, 1870. p. 4.
    • “James B. Eads.” St. Louis Republican. March 11, 1887. p. 6.
  • Books and Articles
    • Christensen, Lawrence O., William E. Foley, Gary R. Kremer, and Kenneth H. Winn, eds. Dictionary of Missouri Biography. Columbia: University of Missouri Press, 1999. pp. 267-268. [REF F508 D561]
    • McHenry, Estill, ed. Addresses and Papers of James B. Eads: Together with a Biographical Sketch. St. Louis: Slawson & Company, 1884. [REF F565.2 Ea25]
    • Orrmont, Arthur. James Buchanan Eads: The Man Who Mastered the Mississippi. Englewood Cliffs, NJ: Prentice-Hall, 1970. [REF F508.1 Ea25or]
    • Scott, Quinta, and Howard Smith Miller. The Eads Bridge. Columbia: University of Missouri Press, 1979. [REF H235.21 Sco85 1999]
  • Manuscript Collection

Outside Resources

These links will take you outside the Society’s website. The Society is not responsible for the content of the following websites:
  • James Buchanan Eads Collection, 1776-1974
    The Missouri History Museum in St. Louis holds a small collection of material concerning James Buchanan Eads, including professional and personal correspondence, as well as news clippings.

Historic Missourians: James B. Henderson
James Buchanan Eads James Buchanan Eads (1820-1887).

James Buchanan Eads was a leading entrepreneur and engineer in St. Louis, Missouri, during the nineteenth century.

[The United States Biographical Dictionary, Portrait Gallery of Eminent and Self-Made Men, Missouri Volume. New York: United States Biographical Publishing Company, 1878. p. 94. SHS REF F508 Un3h]

James Buchanan Eads

Born: May 23, 1820
Died: March 8, 1887 (age 66)
Categories: Scientists, Entrepreneurs
Missouri Hometown: St. Louis

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