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6th Street North Viaduct

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Pylons and Cables

These mirror image structures replaced the 6th Viaduct, built in 1908, that stretched 2,780 feet across the valley. Ramps provided access to Canal Street and the US Post Office. Today the Post Office (soon to be closed) is still reached by bridge, but Canal Street is reached at a grade crossing.

The claim has been made that the north and south 6th St. Viaduct bridges are the first cable stayed bridges in Wisconsin.

Not so, at least, according to the Wisconsin DOT. Wis DOT says the first cable stayed bridge in the United States is a cable stayed pedestrian bridge in Menomonee Falls, Waukesha County, Wisconsin.

The pylons are 142' tall.

Photo taken by J.R. Manning in July 2008

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Map 

Street View 

Facts 

Overview
Cable-stayed bridge over St Paul Avenue and Canadian Pacific RR on N 6th Street in Milwaukee
Location
Milwaukee, Milwaukee County, Wisconsin
Status
Open to traffic
History
Built 2002; Replaced, in part, the 1908 6th Street Viaduct
Builders
- Howard, Needles, Tammen & Bergendoff of Kansas City, Kansas
- Lunda Construction Co.
- Zenith Tech
Design
Cable-stayed
Dimensions
Length of largest span: 194.9 ft.
Total length: 670.6 ft.
Deck width: 58.1 ft.
Approximate latitude, longitude
+43.03390, -87.91870   (decimal degrees)
43°02'02" N, 87°55'07" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/425159/4764988 (zone/easting/northing)
USGS topographic map
Milwaukee
Inventory number
BH 36811 (Bridgehunter.com ID)
Inspection (as of 11/2011)
Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 93.5 (out of 100)
Average daily traffic (as of 2010)
17,750

Update Log 

  • August 4, 2010: New Street View added by Jason Smith
  • September 7, 2008: New photos from J.R. Manning
  • July 6, 2008: Added by J.R. Manning

Sources 

  • J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
  • DYWIDAG-Systems International - Description of the bridges and the stay cables, presented by the manufacturer of the stay cables.
  • Lunda Construction Company - Description of the bridge project.
  • Jason Smith - JDSmith77 [at] gmx [dot] net