Margaret Hunt Hill Bridge
Margaret Hunt Hill Bridge
Margaret Hunt Hill Bridge
The inaugural lighting of the Margaret Hunt Hill Bridge
Coordinates 32°46?48.79?N 96°49?18.71?W / 32.7802194°N 96.8218639°W / 32.7802194; -96.8218639Coordinates: 32°46?48.79?N 96°49?18.71?W / 32.7802194°N 96.8218639°W / 32.7802194; -96.8218639
Carries
Crosses Trinity River
Locale Dallas, Texas
Characteristics
Design Cable-stayed bridge
Height 400 feet (120 m) central arch pylon
Longest span 1,197 feet (365 m)
(total length 1,870 feet (570 m))
History
Designer Santiago Calatrava
Opened March 29, 2012; 5 years ago (March 29, 2012)[1][2]
Statistics
Toll None

The Margaret Hunt Hill Bridge is a bridge in Dallas, Texas, that spans the Trinity River. The bridge is named for Margaret Hunt Hill, an heiress and philanthropist.[3] The bridge was constructed as part of the Trinity River Project. Designed by Santiago Calatrava, it is one of three such bridges planned to be built over the Trinity; the second, the Margaret McDermott Bridge, is completed . The span parallels the Ronald Kirk Avenue Bridge, a walking bridge that was previously was the Continental Avenue bridge.[4]

History

The bridge, which opened in March 2012, is the first of a series of bridges that the office of Santiago Calatrava designed to span the Trinity River in downtown Dallas.[5] The bridge connects Spur 366 (Woodall Rodgers Freeway) in downtown to Singleton Boulevard in West Dallas.[6] Construction on the bridge began in December 2005.[7] The bridge cost $117 million to build.[8] A Dallas Morning News analysis put the project's total cost at $182 million.[9]

On June 26, 2010, the signature 40-story center-support arch was topped with a central curved span, which can now be seen from many miles away in several directions.[10] The arch provides an additional feature to the Downtown Dallas skyline.

In 2012, the bridge received an Outstanding Civil Engineering Achievement Award from the Texas section of the American Society of Civil Engineers.[11] The bridge also received a 2012 European Convention for Constructional Steelwork Award For Steel Bridges.[12]

Architecture

The cable-stayed bridge supports its 1,870 feet (570 m) length and 1,197 feet (365 m) main span with a steel arch whose peak's height is 400 feet (122 m). An array of twisting cables connect the underside of the arch's curved pylon to the bridge's platform. Fifty-eight (58) white strands descend from the arch and secure themselves along the centerline of the platform. The 16 feet (4.9 m) diameter support is composed of 25 individual segments, secured with 20,000 pounds (9,100 kg) of bolts and additional 450 tons (408,233 kg) of concrete. The bridge provides six lanes for vehicular traffic.[8][13] The bridge closely resembles two of three bridges constructed in 2005-2006 above the Autostrada A1 motorway and connecting roads in Reggio Emilia, Italy, that Calatrava had earlier designed.[14] In 2009, the European Convention for Constructional Steelwork gave the two bridges a European Steel Design Award, stating that the structures' original visual effects at different angles give the bridges "the aspect of huge musical instruments."[15]

Gallery

Construction in July 2010
Panoramic view of construction in July 2010.

References

  1. ^ Dallas Morning News - "Really This Time: Margaret Hunt Hill Bridge Celebration Set for March 2-4," June 21, 2011
  2. ^ http://www.dallasnews.com/incoming/20120223-txdot-margaret-hunt-hill-bridge-won-t-open-until-late-march-1.ece
  3. ^ Jaime S. Jordan, Margaret Hunt Hill dies at 91, Dallas Business Journal, Jun 15, 2007
  4. ^ "The great white hoop: Five years of the Margaret Hunt Hill Bridge". Dallas News. 2017-03-24. Retrieved . 
  5. ^ "Margaret Hunt Hill Bridge / Santiago Calatrava". ArchDaily. June 25, 2012. Retrieved 2017. 
  6. ^ "Margaret Hunt Hill Bridge". Trinity River Corridor Project. City of Dallas. 2015. Archived from the original on March 15, 2016. Retrieved 2017. 
  7. ^ "First of Calatrava trio breaks ground in Dallas". News: Bridge design & engineering. London: Hemming Information Services. December 12, 2005. Archived from the original on March 16, 2006. Retrieved 2017. 
  8. ^ a b Margaret Hunt Hill Bridge at Structurae. Retrieved May 3, 2006
  9. ^ Michael A. Lindenberger and Jeffrey Weiss (February 21, 2012). "True cost of Dallas' Margaret Hunt Hill Bridge: $182 million". Dallas Morning News. Retrieved 2015. 
  10. ^ (1) Dallas Morning News - "Dallas' Margaret Hunt Hill Bridge has its arch topped off". Retrieved on June 27, 2010
    (2) Clouds 365 Project- Year 2 - "3-20-11 | Margaret Hunt Hill Bridge and Downtown Dallas view from Hutchins Avenue"
    (3) Clouds 365 Project- Year 3 - "11-02-11 | Margaret Hunt Hill Bridge and Downtown Dallas view from Hutchins Avenue"
  11. ^ (1)"Margaret Hunt Hill Bridge, 2012 OCEA". Texas Section-American Society of Civil Engineers. Archived from the original on January 5, 2017. Retrieved 2017. 
    (2) "Outstanding Civil Engineering Achievement Awards". Texas Section-American Society of Civil Engineers. Archived from the original on February 18, 2016. Retrieved 2017. 
  12. ^ "Margaret Hunt Bridge, Dallas, USA". 2012 ECCS Award For Steel Bridges. Brussels, Belgium: European Convention for Constructional Steelwork. pp. 4-7. Retrieved 2017. 
  13. ^ "Santiago Calatrava: Margaret Hunt Hill Bridge". Architecture. Designboom. March 13, 2012. Archived from the original on November 22, 2012. Retrieved 2017. 
  14. ^ (1) "Twin Stayed Road Bridges Reggio Emilia". Milan, Italy: Redailli Tecna S.P.A. Retrieved 2017. 
    (2) Rogers, Tim (June 22, 2011). "Is Our Calatrava Bridge a Copy of Reggio Emilia's?". FrontBurner. Dallas, Texas: D Magazine Partners, Inc. Retrieved 2017. 
  15. ^ "Three bridges in Reggio Emilia (Italy)" (PDF). European Steel Design Awards 2009. Brussels, Belgium: General Secretariat, European Convention for Constructional Steelwork. 2009. pp. 16-17. Archived from the original (PDF) on January 5, 2017. Retrieved 2017. 

Further reading

  • Corris, Michael (October 2015). "Dallasian Spring". Art in America. New York: Brant Publications: 55-58. 

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.


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