Viaduct

A viaduct is a bridge composed of several small spans. It is built for crossing a valley, dry or wetland, or forming an overpass or flyover.^{[1][2][3][4][5]}

The 1812 Laigh Milton Viaduct in Ayrshire – the oldest surviving railway bridge in Scotland

Viaduct crossing the Santa Ana River in Riverside, California, built in 1903

The word viaduct has two parts from Latin: via for road and ducere, to lead. The ancient Romans did not use this word; it was invented in the nineteenth-century by analogy with aqueduct.^[4]

References

1. "Definition of VIADUCT". www.merriam-webster.com. Retrieved 27 March 2018.
2. "dict.org- Viaduct". www.dict.org. Retrieved 27 March 2018.
3. "dict.org- Viaduct". www.dict.org. Retrieved 27 March 2018.
4. "viaduct - Definition of viaduct in English by Oxford Dictionaries". Oxford Dictionaries - English. Archived from the original on 18 April 2016. Retrieved 27 March 2018.
5. "the definition of viaduct". Dictionary.com. Retrieved 27 March 2018.