Final work on Sabo Bridge begins this week
This week, crews will begin making final repairs to the Sabo bike and pedestrian bridge, where support cables broke loose last winter. The work will require the bridge to close to all bicycle and pedestrian traffic until the work is completed in early December.
For the next few weeks, crews will be installing and retrofitting diaphragm plates on the bridge’s pylon. One of those plates fractured in February, causing a pair of suspension cables to break loose.Wiss, Janney, Elstner Associates, Inc., an engineering firm hired to find the cause of the fracture, concluded in June that wind-induced cable vibrations caused fatigue cracking in the diaphragm plates resulting in two cable connections fracturing. The retrofitted and replacement plates being installed are designed to withstand the fatigue that caused the cracking.
During the closure, bike and pedestrian traffic will be detoured to the intersection of 28th Street and Hiawatha Avenue.
The Sabo Bridge is a 215 foot-long cable-stayed suspension bridge that opened in November of 2007 to carry Midtown Greenway bicycles and pedestrians over Hiawatha Avenue. The bridge was built by Hennepin County and turned over to the City of Minneapolis when construction was completed.
Published Sep. 24, 2012