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Ancient arch bridges were made of stone, although today’s bridges are more likely to be made of steel and concrete. Arch bridges work by putting the material into compression (pushing its particles together). The compression forces in the arch then press against the ground.

Civil engineers are responsible for road and street construction, and the longest street in the world is almost 1,200 miles. It is Yonge (“young”) street and is located in Toronto, Canada. All or part of it has been in use since the 17th century.

The skills of a civil engineer aren't just utilized in the public sector but in the private sector as well. Homeowners can call upon civil engineers to guide them through the construction of a new home or an addition to an existing home.

Bridges are an ancient form of engineering that goes back far longer than the Ancient Greeks. The Romans, however, were arguably the best. They engineered arch bridges and aqueducts that were stronger and more stable by using smarter designs and materials.

The first thing you think about when you hear "Alexandre Gustave Eiffel" is probably the Eiffel tower, or maybe the Statue of Liberty. But before he helped build those famous structures, Eiffel made a name for himself building steel bridges, and many of his ideas are still used today.