Since then, weight limits have been added to the Blatnik Bridge that carries the highway over Saint Louis Bay between Superior, Wisconsin, and Duluth, Minnesota.

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] In 2007, the Wisconsin Department of Transportation (WisDOT) surveys measured a traffic along their segment of I-535 at 21,800–29,500 vehicles daily, on average.

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.