General Information
Other name(s): | Hoan Bridge; Milwaukee Harbor Bridge |
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Beginning of works: | 1970 |
Completion: | 1973 |
Status: | in use |
Project Type
Structure: |
Half-through arch bridge |
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Support conditions: |
for registered users |
Function / usage: |
Motorway bridge / freeway bridge |
Material: |
Steel bridge Structurae Plus/Pro - Subscribe Now! |
Awards and Distinctions
1975 |
award winner
for registered users |
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Location
Location: |
Milwaukee, Milwaukee County, Wisconsin, USA |
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Address: | Interstate 794 (I-794) |
Crosses: |
|
Coordinates: | 43° 1' 50.52" N 87° 54' 0.77" W |
Coordinates: | 43° 0' 55.10" N 87° 53' 43.66" W |
Coordinates: | 43° 1' 30.24" N 87° 53' 55.64" W |
Technical Information
Dimensions
main span | 182.9 m | |
width | 15.8 m | |
total length | 3 057.8 m | |
number of lanes | 6 | |
vertical navigation clearance | 36.6 m |
Materials
piers |
reinforced concrete
|
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arches |
steel
|
girders |
steel
|
Chronology
1973 | Completion of the bridge. |
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1977 | Opened to traffic after completion of access roads. |
December 2000 | Two of the three girders supporting a section of the southbound lanes fail, causing them to sag nearly 3 meters. The bridge is immediately closed. The damaged section is later removed by explosive demolition. |
13 December 2000 | A section of the approach spans visibly sags. Two of three girders have full depth cracks. The bridge is closed to traffic. |
28 December 2000 | The most critically damaged section is removed by explosive demolition. |
November 2001 | The damaged section is opened to traffic after having been rebuilt. Total cost fo removal of the damaged parts and reconstruction is US$ 19 million. |
November 2001 | The bridge reopens after extensive repairs and retrofitting. An investigation concluded that improperly installed transverse beams combined with a period of extreme cold and snow contributed to the partial collapse. |
Participants
- Pittsburgh-Des Moines Steel Company (superstructure)
Relevant Web Sites
Relevant Publications
- Approach-Span Failure of the Hoan Bridge as a Case Study for Engineering Students and Practicing Engineers. In: Journal of Performance of Constructed Facilities (ASCE), v. 28, n. 2 (April 2014), pp. 341-348. (2014):
- Brücken / Bridges. Ästhetik und Gestaltung / Aesthetics and Design. 4th edition, Deutsche Verlags-Anstalt, Stuttgart (Germany), pp. 249-250. (1994):
- About this
data sheet - Structure-ID
20006380 - Published on:
18/10/2002 - Last updated on:
26/10/2023