The Martin Olav Sabo Bridge – a bike and pedestrian bridge over Hiawatha Ave. in south Minneapolis – will close Sunday morning for the start of repairs.
A pair of suspension cables on the five-year-old bridge broke loose in February when one of the diaphragm plates fractured.
Forensic engineers found concluded wind-induced cable vibrations caused cracking in the plates. The replacement plate is designed to withstand the stress that caused the cracking.
The Sabo bridge reopened in June after temporary supports were installed and the bridge was declared safe for bikes and pedestrians.
The bridge is expected to be closed for about a week for the permanent repair. Officials will monitor the bridge over the next month to see how the new plate performs.
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