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1971

The Tabernacle in December 2008
Society: ASCE Main Category: Civil Sub Category: Buildings Era: 1860-1869 DateCreated: 1867 Mormon Tabernacle Salt Lake City State: UT Zip: 84150 Country: USA Website: http://www.asce.org/Project/Mormon-Tabernacle/ Creator: Grow, Henry

Just 20 years after settling the uninhabited Salt Lake valley, Brigham Young and his Mormon followers completed one of the nation's most impressive public structures. The 9,000-seat Mormon Tabernacle boasts a clear span roof measuring 150 feet by 250 feet, its timber trusses joined with wooden pegs and lashed with green rawhide, which shrank and tightened as it dried.

YearAdded:
1971
Image Credit: Courtesy Wikicommons/Leon7 (CC BY-SA 3.0) Image Caption: The Tabernacle in December 2008. Era_date_from: 1867
Eads Bridge
Society: ASCE Main Category: Civil Sub Category: Water Transportation Era: 1870-1879 DateCreated: 1874 Eads Bridge East St. Louis State: IL Zip: 62201 Country: USA Website: http://www.asce.org/Project/Eads-Bridge/ Creator: Eads, James

In the decade following the Civil War, the Mississippi River began to lose its standing as the primary transport artery in the Midwest. Railroads were taking over, and Chicago was rapidly becoming the center of Midwestern commerce. The Eads Bridge was the first major railroad link over the Mississippi, constructed by the city of St. Louis in an attempt to maintain its dominance as a regional commercial hub.

YearAdded:
1971
Image Credit: Courtesy Flickr/Patrick Yodarus (CC BY-SA 2.0) Image Caption: Eads Bridge Era_date_from: 1874
Druid Lake Dam
Society: ASCE Main Category: Civil Sub Category: Dams Era: 1870-1879 DateCreated: 1871 Druid Hill Park Baltimore State: MD Zip: Country: USA Website: http://www.asce.org/Project/Druid-Lake-Dam/ Creator: Martin, Robert

Like other American cities in the late 19th century, Baltimore had grown so quickly its supply system was unable to provide city residents with a dependable supply of water. Two reservoirs built outside the city helped increase capacity, but heavy rainfalls in the largely agricultural area tended to foul this additional water supply. City officials elected to construct a holding reservoir within the city - contained by an earthen dam - where silty water would be allowed to settle. No such project had ever been undertaken in the United States.

YearAdded:
1971
Image Credit: Courtesy Flickr/Jeff Covey (CC BY-SA 2.0) Image Caption: Druid Lake Dam Era_date_from: 1871
Bethlehem Waterworks
Society: ASCE Main Category: Civil Sub Category: Water Supply & Control Era: 1750-1799 DateCreated: 1761 Historic Subdistrict A Bethlehem State: PA Zip: 18018 Country: USA Website: http://www.asce.org/Project/Bethlehem-Waterworks/ Creator: Christiansen, Hans Christopher , Moravians

The first known pumping system providing drinking and wash water in the North American colonies. The building (still standing) is dated 1761, but it was preceded by an experimental frame building dated 1754. Before the Bethlehem built its system, assigned carriers would daily haul water up the hill from a well near the city gate. A wooden waterwheel, driven by the flow of Monocacy Creek, drove wooden pumps which lifted the water through wooden pipes to the top of the hill where the water was distributed by gravity.

YearAdded:
1971
Image Credit: Courtesy Flickr/Discover Lehigh Valley (CC BY 2.0) Image Caption: Through multiple restorations (1964, 1972, 1975), the Bethlehem Waterworks still stands today, despite being over 250 years old. Era_date_from: 1761
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Innovations

Bethlehem Waterworks

The first known pumping system providing drinking and wash water in the North American colonies. The building (still standing) is dated 1761, but it was preceded by an experimental frame building dated 1754. Before the Bethlehem built its system, assigned carriers would daily haul water up the…

Read More
Druid Lake Dam

Like other American cities in the late 19th century, Baltimore had grown so quickly its supply system was unable to provide city residents with a dependable supply of water. Two reservoirs built outside the city helped increase capacity, but heavy rainfalls in the largely agricultural area…

Read More
Eads Bridge

In the decade following the Civil War, the Mississippi River began to lose its standing as the primary transport artery in the Midwest. Railroads were taking over, and Chicago was rapidly becoming the center of Midwestern commerce. The Eads Bridge was the first major railroad link over the…

Read More
The Tabernacle in December 2008

Just 20 years after settling the uninhabited Salt Lake valley, Brigham Young and his Mormon followers completed one of the nation's most impressive public structures. The 9,000-seat Mormon Tabernacle boasts a clear span roof measuring 150 feet by 250 feet, its timber trusses joined with wooden…

Read More

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