| Revision as of 13:26, 11 January 2006 editKjkolb (talk | contribs)Administrators20,864 edits not all aqueducts are level, long aqueducts with small elevation differences must be relatively level← Previous edit | Revision as of 18:43, 28 January 2006 edit undo24.218.205.157 (talk) corrected typgraphyNext edit → | ||
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| ]'s ] bridges the ] valley; road traffic uses the upper deck, ] traffic uses the lower deck.]] A '''viaduct''' is a ] that connects points of equal height in a landscape, usually by bridging a river ] or other eroded opening in an otherwise flat area. Often such valleys have roads descending either side (with a small bridge over the river, where necessary) that |
]'s ] bridges the ] valley; road traffic uses the upper deck, ] traffic uses the lower deck.]] A '''viaduct''' is a ] that connects points of equal height in a landscape, usually by bridging a river ] or other eroded opening in an otherwise flat area. Often such valleys have roads descending either side (with a small bridge over the river, where necessary) that became inadequate for the traffic load, necessitating a viaduct for through traffic. Such bridges also lend themselves for use by ] traffic, which requires straighter and flatter routes. It gets its name from an analogy with ], which must be almost level in some cases, while a bridge for people, pack animals or non-rail vehicles can be hump-backed and gain a structural advantage (i.e., less material or design sophistication needed) from that shape. | ||
| Some well-known viaducts include: | Some well-known viaducts include: | ||
Revision as of 18:43, 28 January 2006
A viaduct is a bridge that connects points of equal height in a landscape, usually by bridging a river valley or other eroded opening in an otherwise flat area. Often such valleys have roads descending either side (with a small bridge over the river, where necessary) that became inadequate for the traffic load, necessitating a viaduct for through traffic. Such bridges also lend themselves for use by rail traffic, which requires straighter and flatter routes. It gets its name from an analogy with aqueduct, which must be almost level in some cases, while a bridge for people, pack animals or non-rail vehicles can be hump-backed and gain a structural advantage (i.e., less material or design sophistication needed) from that shape.
Some well-known viaducts include:
- Bloor Street Viaduct
- Millau Viaduct
- Glenfinnan Viaduct
- Thelwall Viaduct
- Lethbridge Viaduct
- Cypress Viaduct
- Interstate 805 Viaduct
- Nuselsky most in Prague
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