Английская Википедия:19th Street Bridge
Шаблон:Short description Шаблон:Infobox bridge The 19th Street Bridge is a two-span through Pratt truss road bridge in Denver, Colorado, over the South Platte River, now used for pedestrians. It was built in 1888 to replace a wooden structure and carried automobile traffic until 1986. The bridge is listed on the National Register of Historic Places.
History
A number of bridges were built across the South Platte River beginning in 1859, and by 1875, there was interest in a bridge to span the river at the 19th Street location. In 1876, a wooden bridge was constructed at the site.Шаблон:Sfn This previous bridge was closed to traffic in 1884 after it was damaged in a flood. Because of repeated floods destroying numerous wooden bridges, the city of Denver sought to replace them with metal structures. By 1887, because of their ready availability and low expense, the city began building metal bridges to replace the wooden spans. On August 26, 1887, the Missouri Valley Bridge and Iron Works was contracted to build the 19th Street Bridge.Шаблон:Sfn The structure cost $25,000, including $8,250 for Шаблон:Convert of iron.Шаблон:Sfn[1] Construction on the new span was complete in 1888.Шаблон:Sfn
Around 1898, a plan surfaced to rebuild the bridge as a viaduct so that it would not cross only the river, but also the rail switching yard. However, the plan was defeated in June 1904.Шаблон:Sfn The bridge has remained mostly unmodified since construction. Timber decking was replaced with corrugated steel following a 1961 flood and some bent hinges were replaced as a result of a 1965 flood.Шаблон:Sfn[lower-alpha 1] The 19th Street Bridge was listed on the National Register of Historic Places on February 4, 1985.[3]
Because of repeated wear and deterioration caused by salt for melting ice, the bridge was restricted to pedestrians and bicycles beginning on December 16, 1986. Following the closure, a new vehicular bridge was planned downstream (to the northeast), tentatively referred to as the "Nineteen and A-Half Street Bridge"; it was built in 1992.Шаблон:Sfn[4]
Aside from serving as a pedestrian bridge, the structure has hosted the annual "Gala on the Bridge", a fundraiser for The Greenway Foundation. It began in 2011, and was described in The Denver Post as the "first time the bridge has been used for anything other than a way for people to cross the South Platte River".[5][6]
In the state of Colorado, at the time of its NRHP nomination, the 19th Street Bridge was described as the oldest surviving wrought iron bridge, oldest vehicular bridge at its original location, and oldest vehicular bridge still in public use.[1]Шаблон:SfnШаблон:Sfn
Design
The bridge's two spans have a through Pratt truss design, each with five panels.Шаблон:Sfn The structure is about Шаблон:Convert long with a roadway about Шаблон:Convert wide.Шаблон:SfnШаблон:Sfn The roadbed is concrete on corrugated metal, replacing the original wood decking. The structural members are made of wrought iron and are pin-connected. The top chords are horizontal, and the upper struts are "unusually deep" I-beams. Sidewalks, decorated with iron newels and latticework, cantilever off both sides of the bridge. The south sidewalk permits pedestrians, while the north one has no deck and carries utility lines. The bridge is supported by ashlar piers of solid stone.Шаблон:Sfn The latticed portals feature decorative cast iron crests and finials, and a plaque with the builder's inscription.Шаблон:SfnШаблон:Sfn The bridge is described by History Colorado as one of the most ornamental in Colorado.[7]
See also
- List of bridges documented by the Historic American Engineering Record in Colorado
- List of bridges on the National Register of Historic Places in Colorado
- National Register of Historic Places listings in downtown Denver, Colorado
- National Register of Historic Places listings in West Denver, Colorado
Notes
References
Bibliography
External links
- ↑ 1,0 1,1 Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite web
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокhcне указан текст
Ошибка цитирования Для существующих тегов <ref> группы «lower-alpha» не найдено соответствующего тега <references group="lower-alpha"/>
- Английская Википедия
- Страницы с неработающими файловыми ссылками
- Former road bridges in the United States
- Road bridges on the National Register of Historic Places in Colorado
- Historic American Engineering Record in Colorado
- National Register of Historic Places in Denver
- Pedestrian bridges in Colorado
- Wrought iron bridges in the United States
- Pratt truss bridges in the United States
- Transportation buildings and structures in Denver
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
- Страницы с ошибками в примечаниях
