3 votes

6th Street North Viaduct


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


BH Photo #116604

Street View 


Cable-stayed bridge over St Paul Avenue and Canadian Pacific RR on N 6th Street in Milwaukee
Milwaukee, Milwaukee County, Wisconsin
Open to traffic
Built 2002; Replaced, in part, the 1908 6th Street Viaduct
- Howard, Needles, Tammen & Bergendoff Corporation of Kansas City, Kansas
- Lunda Construction Co. of Black River Falls, Wisconsin
- Zenith Tech
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)
Quadrangle map:
Average daily traffic (as of 2015)
Inventory number
BH 36811 (Bridgehunter.com ID)
Inspection report (as of October 2017)
Overall condition: Good
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 95.9 (out of 100)
View more at BridgeReports.com

Update Log 

  • November 19, 2014: New photos from Patrick S. O'Donnell
  • 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


  • 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 - flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com
  • Patrick S. O'Donnell - 1 [dot] 991km [at] comcast [dot] net