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"Anchorage of a cable of the East River Bridge, New York."-Whitney, 1902

Anchorage

"Anchorage of a cable of the East River Bridge, New York."-Whitney, 1902

"The elevation of Bowstring Arch, High-Level Bridge, Newcastle." — Encyclopedia Britanica, 1893

Bowstring Arch

"The elevation of Bowstring Arch, High-Level Bridge, Newcastle." — Encyclopedia Britanica, 1893

"View of Bagdad." — Goodrich, 1844

Ancient Bagdad

"View of Bagdad." — Goodrich, 1844

"The Bouquet Battery, commanding the viaduct over the Patapsco River, on the Baltimore and Ohio Railroad, near the Relay House, in 1861. The Relay House was a small railroad station about seven miles from Baltimore, on the Northern Central Railroad. It was of small population and trade, but its position elevated it into considerable importance. Immediately after the troubles in Baltimore this position was seized upon, and General Butler made it his headquarters, and by so doing not only held the control of the railrod to Harper's Ferry and the Baltimore and Ohio Railroad and Patapsco River, but threatened the city of Baltimore with a strong military force. The Relay House was romantically situated in a country of exquisite natural beauty. Our sketch shows the battery stationed to command the viaduct, with the Relay House in the distance." —Leslie, 1896

Bouquet Battery

"The Bouquet Battery, commanding the viaduct over the Patapsco River, on the Baltimore and Ohio Railroad,…

View of a village in the Schwartzwald, or Black Forest. The Black Forest stands in the elbow formed by the Rhine river in its course from Schaffhausen to Basle, and from Basle to Mannheim. It is bounded by the plain that borders the river The Neckar River bounds it on the north, while on the east it is limited by the upper part of the same river, and by an imaginary line drawn from the source of the Neckar to Schaffhausen. The Black Forest owes its gloomy name to the dark aspect of its peaks and slopes which is shadowed by pine-trees. On the brightest day the forest's trees still retain their shadow.

Black Forest Village

View of a village in the Schwartzwald, or Black Forest. The Black Forest stands in the elbow formed…

Men building the bridge that led to Rome.

Bridge

Men building the bridge that led to Rome.

Men building the bridge that led to Rome, a fatal task.

Bridge

Men building the bridge that led to Rome, a fatal task.

An illustration of a simple bridge over a small river.

Bridge

An illustration of a simple bridge over a small river.

An illustration of a stone bridge over a small river.

Bridge

An illustration of a stone bridge over a small river.

"Ancient bridge in Laconia." — Smith, 1882

Bridge

"Ancient bridge in Laconia." — Smith, 1882

"Advance of the Federal troops, near Howard's Bridge and Mill, four miles from Big Bethel, on the road to Yorktown." —Leslie, 1896

Howard's Bridge and Mill

"Advance of the Federal troops, near Howard's Bridge and Mill, four miles from Big Bethel, on the road…

An illustration of a simple arch bridge spanning a small river.

Arch Bridge

An illustration of a simple arch bridge spanning a small river.

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today.

Arch Bridge

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by…

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today.

Arch Bridge

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by…

"The old bridge of Brioude across the Allier in France. Montfaucon and Seguin speak of this as a Roman work, but Gauthey gives the date 1454 for its construction, and names Grenier and Estone as builders without giving his authority." — Encyclopedia Britanica, 1893

Brioude Bridge

"The old bridge of Brioude across the Allier in France. Montfaucon and Seguin speak of this as a Roman…

Britannia Tubular Bridge.

Britannia Bridge

Britannia Tubular Bridge.

Cantilever with suspended span.

Bridge, Cantileaver with Suspension Span

Cantilever with suspended span.

A cantilever bridge is a bridge built using cantilevers, structures that project horizontally into space, supported on only one end. For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from structural steel, or box girders built from prestressed concrete. The steel truss cantilever bridge was a major engineering breakthrough when first put into practice, as it can span distances of over 1,500 feet (460 m), and can be more easily constructed at difficult crossings by virtue of using little or no falsework.

Cantilever Bridge

A cantilever bridge is a bridge built using cantilevers, structures that project horizontally into space,…

"A strange triangular bridge at Croyland was probably built for or by a religious body. This structure stands at the confluence of the Welland, the Nyne, and the Catwater drain; three pointed arches, having their abutments at the angles of an equilateral triangle, meet in the middle, giving three watercourses and three roadways." — Encyclopedia Britanica, 1893

Croyland Bridge

"A strange triangular bridge at Croyland was probably built for or by a religious body. This structure…

A steel arch bridge erected in 1874 and costed around one million dollars. Crosses over the Mississippi in St. Louis. Each arch is at least 500 feet in length.

Eads Bridge

A steel arch bridge erected in 1874 and costed around one million dollars. Crosses over the Mississippi…

St. Louis, Missouri is the home of the first rail and road bridge to cross the Mississippi River, the Eads Bridge, which was completed in 1874.

Eads Bridge

St. Louis, Missouri is the home of the first rail and road bridge to cross the Mississippi River, the…

The suspension-bridge over the strait called the East river, which seperates New York and Brooklyn was completed and formally opened on May 24th 1883.

East River Bridge

The suspension-bridge over the strait called the East river, which seperates New York and Brooklyn was…

The Forth Bridge is a cantilever railway bridge over the Firth of Forth in the east of Scotland, to the east of the Forth Road Bridge, and 14 km (9 miles) west of central Edinburgh. It is often called the Forth Rail Bridge or Forth Railway Bridge to distinguish it from the Forth Road Bridge, but should correctly be referred to as the Forth Bridge. The bridge connects Scotland's capital Edinburgh with the Kingdom of Fife, and acts as a major artery connecting the north-east and south-east of the country. Described as "the one internationally recognised Scottish landmark", it may be nominated by the British government as a UNESCO World Heritage Site. The bridge and its associated railway infrastructure is owned by Network Rail Infrastructure Limited.

Forth Bridge

The Forth Bridge is a cantilever railway bridge over the Firth of Forth in the east of Scotland, to…

Illinois and St. Louis Bridge.

Illinois Bridge

Illinois and St. Louis Bridge.

"The bridge over Conway at Llanrwst in Wales, the design for which was furnished by Inigo Jones in 1634. The middle arch has a span of 58 feet. The structure is easily set in vibration, and is known as the 'shaking bridge.'" — Encyclopedia Britanica, 1893

Llanrwst Bridge

"The bridge over Conway at Llanrwst in Wales, the design for which was furnished by Inigo Jones in 1634.…

The old London Bridge.

London Bridge

The old London Bridge.

The new London Bridge.

London Bridge

The new London Bridge.

Menai Suspension Bridge.

Menai Bridge

Menai Suspension Bridge.

The New East River Bridge is located in New York. It is often called the Brooklyn Bridge. It is the largest suspension bridge in the world.

New East River Bridge, NY

The New East River Bridge is located in New York. It is often called the Brooklyn Bridge. It is the…

High Level Bridge, Newcastle.

Newcastle Bridge

High Level Bridge, Newcastle.

Niagara Suspension Bridge.

Niagara Bridge

Niagara Suspension Bridge.

An illustration of weird, little people running across a bridge that is being partially submerged by a large body of water.

People on a Bridge

An illustration of weird, little people running across a bridge that is being partially submerged by…

"Plan of High-Level Bridge, Newcastle." — Encyclopedia Britanica, 1893

Bridge Plans

"Plan of High-Level Bridge, Newcastle." — Encyclopedia Britanica, 1893

Platt Truss.

Bridge, Platt Truss

Platt Truss.

"The bridge of the Rialto at Venice was begun in 1588, Antonio da Ponte being the architect. The span of the arch is 91 feet, the height above the water level 24 feet 6 inches, and the width of the footway 72 feet." — Encyclopedia Britanica, 1893

Rialto Bridge

"The bridge of the Rialto at Venice was begun in 1588, Antonio da Ponte being the architect. The span…

Ribbed Arch

Bridge, Ribbed Arch

Ribbed Arch

"The old bridge at Saintes as M. Violletle-Duc considers that it appeared towards the end of the 14th century." — Encyclopedia Britanica, 1893

Saintes Bridge

"The old bridge at Saintes as M. Violletle-Duc considers that it appeared towards the end of the 14th…

Bridge, Scherzer Single-Leaf Bascule Bridge

Bridge, Scherzer Single-Leaf Bascule Bridge

Bridge, Scherzer Single-Leaf Bascule Bridge

The Southwark Bridge.

Southwark Bridge

The Southwark Bridge.

"One of the earliest examples of the castle built to protect the bridge against an enemy or to enforce payment of a toll, the bridge and castle of medieval romance." — Encyclopedia Britanica, 1893

St. Chamas Bridge

"One of the earliest examples of the castle built to protect the bridge against an enemy or to enforce…

Steel tower bridge across the East River in New York.

Steel Bridge

Steel tower bridge across the East River in New York.

Strauss Heel-trunnion Bascule Bridge

Bridge, Strauss Heel-trunnion Bascule

Strauss Heel-trunnion Bascule Bridge

Suspension bridge.

Bridge, Suspension

Suspension bridge.

A suspension bridge is a type of bridge where the main load-bearing elements are hung from suspension cables. While modern suspension bridges with level decks date from the early 19th century, earlier types are reported from the 3rd century BC. Simple suspension bridges, for use by pedestrians and livestock, are still constructed, based upon the ancient Inca rope bridge.

Suspension Bridge

A suspension bridge is a type of bridge where the main load-bearing elements are hung from suspension…

Swing bridge.

Brdige, Swing

Swing bridge.

"The covered bridge over the Ticino at Pavia was erected, under Gain Galeazzo Visconti, about the end of the 14th century. This bridge, which still exists, has seven pointed brick arches, each 70 feet in span and 64 feet in height; the depth of the arch ring at the crown is 5 feet, 6 inches." — Encyclopedia Britanica, 1893

Ticino Bridge

"The covered bridge over the Ticino at Pavia was erected, under Gain Galeazzo Visconti, about the end…

Vertical Lift Bridge

Bridge, Vertical Lift

Vertical Lift Bridge

The Waterloo Bridge.

Waterloo Bridge

The Waterloo Bridge.

"A fine bridge over the Ouse at York, erected in the reign of Queen Elizabeth, was taken down some years ago. The span of the largest arch was 81 feet, and the rise 26 feet 3 inches." — Encyclopedia Britanica, 1893

York Bridge

"A fine bridge over the Ouse at York, erected in the reign of Queen Elizabeth, was taken down some years…

Brooklyn Bridge between New York and Brooklyn.

The Brooklyn Bridge

Brooklyn Bridge between New York and Brooklyn.

The romantisit, J. William Turner, was famous for his drawings of landscapes such as: lakes, castles, ruins, ships and coast lines. In this picture he displays his technique. The piece is from the "Rivers of France".

Chateau D'Amboise

The romantisit, J. William Turner, was famous for his drawings of landscapes such as: lakes, castles,…

"Transportation in a large city, showing elevated road, surface line, and subway." -Gordy, 1916

City Transportation

"Transportation in a large city, showing elevated road, surface line, and subway." -Gordy, 1916

This is a pen drawing by artist Edmund New. It seems to illustrate people walking across a bridge in Evesham, England.

Pen Drawing

This is a pen drawing by artist Edmund New. It seems to illustrate people walking across a bridge in…

This is a pen drawing by artist Patten Wilson. It shows a close up of the side of a bridge, and a man on a horse approaching the bridge.

Pen Drawing

This is a pen drawing by artist Patten Wilson. It shows a close up of the side of a bridge, and a man…

This is a pen drawing by artist Edmund New. It seems to illustrate people walking across a bridge in Evesham, England.

Pen Drawing

This is a pen drawing by artist Edmund New. It seems to illustrate people walking across a bridge in…

The Pont du Gard is an aqueduct and bridge that was built over the Gard River by the Roman Empire. It is located in Southern France, in the Vers-Pont-du-Gard and Remoulins area. The bridge is built on three levels. The lower level has 6 arches and carries a road, the middle level has 11 arches, and the upper level has 35 arches and was used as a water conduit.

Pont du Gard

The Pont du Gard is an aqueduct and bridge that was built over the Gard River by the Roman Empire. It…

The town of Harper's Ferry, where an important Civil War battle was fought in 1862.

Harper's Ferry

The town of Harper's Ferry, where an important Civil War battle was fought in 1862.

How Horatius kept the bridge

Horatius

How Horatius kept the bridge

An I-Beam girder is a load bearing beam of steel or iron. It is shaped like a capital letter I.

I-Beam Girder

An I-Beam girder is a load bearing beam of steel or iron. It is shaped like a capital letter I.

Turner painted this picture displaying his incredible techniques with watercolors. It can now be found in the National Gallery.

Ivy Bridge

Turner painted this picture displaying his incredible techniques with watercolors. It can now be found…