I-535 begins in the city of Superior, Wisconsin, at the junction of US 53 and State Trunk Highway 35 (WIS 35) and continues northwest across the Blatnik Bridge over the Saint Louis Bay of Lake Superior. The freeway crosses from Wisconsin into Minnesota on the bridge and then meets an interchange for Garfield Avenue and the Port Terminal in the city of Duluth. I-535 ends at the junction of US 53 and I-35, known locally as the "Can of Worms" interchange, which features a pair of left exits from I-35, a stoplight, and lane drops over the I-35 bridge.[4]
I-535 was authorized in 1957 as part of the original Interstate Highway System.[8] The Blatnik Bridge was opened in 1961,[9] and the ramps to I-35 were completed in 1971.[3] I-535 and the Blatnik Bridge replaced a swinging toll bridge at generally the same location. That bridge existed from 1897 to 1962 and carried US 53 from Connor's Point in Superior to Garfield Avenue in Duluth.[10]
In November 2011, both MnDOT and WisDOT installed new signs to remind drivers that trucks over 40 short tons (36 t) gross vehicle weight cannot use the Blatnik Bridge; these vehicles will be rerouted to the nearby Bong Bridge. According to the press release, permitted, overweight vehicles have been restricted from using the Blatnik Bridge since early 2008 when inspections showed that corrosion and time were starting to affect the structure. Transportation officials say that the bridge is aging, and restriction of overweight vehicles will help to extend the life of the bridge. Drivers who disregard the posted weight limits will be ticketed.[11]
^Distance measurements reset at the state line.[1][2]
References
^ abRegion 5 Staff (May 14, 2009). State Trunk Highway Log for Region 5. Wisconsin Department of Transportation. p. 680.{{cite book}}: CS1 maint: numeric names: authors list (link)
^ abDistrict 1 Staff. "Construction Log 6980"(PDF). Minnesota Department of Transportation. Archived from the original(PDF) on September 14, 2012. Retrieved September 18, 2011.{{cite web}}: CS1 maint: numeric names: authors list (link)
^Wisconsin Department of Transportation (2007). City of Superior(PDF) (Map). Madison: Wisconsin Department of Transportation. Sheet 1. Archived from the original(PDF) on March 22, 2012. Retrieved September 18, 2011.
^Minnesota Department of Transportation (2006). TH Traffic Volumes, City of Duluth(PDF) (Map). St. Paul: Minnesota Department of Transportation. Sheet 3. Retrieved September 18, 2011.
^Adderly, Kevin (August 26, 2010). "The National Highway System". Federal Highway Administration. Archived from the original on May 15, 2008. Retrieved January 1, 2011.
^District 1 Staff. "Construction Log 6981"(PDF). Minnesota Department of Transportation. Archived from the original(PDF) on September 14, 2012. Retrieved September 18, 2011.{{cite web}}: CS1 maint: numeric names: authors list (link)