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35th Street Pedestrian Bridge (new)

Photos 

Looking east

Photo taken by Roger Deschner in February 2017

License: Creative Commons Attribution-Share-Alike (CC BY-SA)

Enlarge

BH Photo #379185

Map 

Description 

New, notable bridge, replaced much more humble earlier truss and girder bridges.

Facts 

Overview
Self-anchored suspension bridge over Metra Electric Line, South Shore Railroad, Canadian National Railway, South Lake Shore Drive (US 41), and Lakefront Trail, on pedestrian pathway that is an extention of the 35th Street sidewalks
Location
Chicago, Cook County, Illinois
Status
Open to pedestrians only
History
Built 2016
Builders
- James McHugh Construction Co. of Chicago, Illinois
- Teng & Associates Inc. of Wauwatosa, Wisconsin
Railroads
- Amtrak (AMTK)
- Canadian National Railway (CN)
- Chicago, South Shore, & South Bend Railroad (CSS)
- Metra (METX)
Design
Wire/cable self-anchored suspension, using a single main cable hung from a single central tower, supporting only one side of S-curved deck. Structurally, each half of the deck appears to function like an arch laid on its side, with the cables providing compression and rigidity in addition to vertical support.
Dimensions
Total length: 620.0 ft.
Approximate latitude, longitude
+41.83120, -87.60588   (decimal degrees)
41°49'52" N, 87°36'21" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/449689/4631212 (zone/easting/northing)
Inventory number
BH 75712 (Bridgehunter.com ID)

Update Log 

  • February 19, 2017: Added by Roger Deschner

Sources 

  • Roger Deschner - rogerdeschner [at] gmail [dot] com

Comments 

35th Street Pedestrian Bridge (new)
Posted August 4, 2017, by Anonymous

One of the photos asks "I wonder what the numbers mean?" (next to each bolt) They would be the tightening sequence. The engineers want the bolts torqued to a very specific torque value, and in the sequence shown to even out the stress on the cable clamp. Then the nuts have "witness marks" so that an inspector can see if the nut has come loose.