The gear rack with insets for pinions that are below the roadway deck, and rows of rivets and bolts, highlight this section of the eastbound portal.

Pons Triangulum. Lake Street Bridge Warren Truss Member Details. #4A

By Divi Logan. EDUSHIRTS.com Staff Photographer, Author, and Influencer.

These are details of the diagonal and vertical members of the Warren Truss web, and views of the bridge framed through them.

PONS Lake St DiagSerial #126 061819 1812

Serial number on a diagonal member. #126

PONS Lake St LB&T #138 061819 1813

#138

PONS Lake St LB&T #142 061819 1814

#142

PONS Lake St LB&T #145 061819 1814

#145

PONS Lake St LB&T #152 061819 1814

#152

PONS Lake St LB&T #167 061819 1816

#167

PONS Lake St TrDeck+Web #199 061819 1820

#199

PONS Lake St TrDeck+Web #200 061819 1820

#200

PONS Lake St LB&T #239 061819 1824

#239

PONS Lake St LB&T #244 061819 1824

#244

PONS Lake St LB&T #245 061819 1824

#245

PONS Lake St LB&T #255 061819 1825

#255

PONS Lake St #263 LB&T 061819 1825

#263

PONS Lake St Lattice Deck #306 061819 1830

#306

PONS Lake St Lattice Deck #307 061819 1830

#307

PONS Lake St Lattice Deck #308 061819 1830

#308

PONS Lake St Web+Train #329 061819 1832

#329

PONS Lake St Web+Train #333 061819 1832

#333

PONS Lake St Web+Train #337 061819 1832

#337

PONS Lake St Web+Train #338 061819 1833

#338

PONS Lake St Web+Train #342 061819 1833

#342

PONS Lake St Web+Train #348 061819 1833

#348

PONS Lake St Web+Train #355 061819 1834

#355

PONS Lake St Web+Train #505 061819 1850

#505

PONS Lake St Web+Train #532 061819 1853

#532

PONS Lake St Web+Train #538 061819 1853

#538

PONS Lake St Web+Train #550 061819 1854

#550

RESOURCES

  1. Logan, Divi. The Lake Street Bridge File Collection. Photographs taken June 18, 2019. Media: Leica Digital. Processed with Microsoft Windows Live Photo Gallery and Paint Text. See related articles and images on LinkedIN and WordPress.
  2. Holth, Nathan. “Lake Street Bridge.” Historic Bridges.org Bridge Browser.  Bridge documented: August 12, 2006 and 2010-May 2012. https://historicbridges. org/bridges/browser/?bridgebrowser=truss/lake/. 26 October 2019.
  3. United States Department of Transportation. Federal Highway Administration. Recording and Coding Guide for the Structure Inventory and Appraisal of the Nation’s Bridges. Washington: Office of Engineering, Bridge Division, Bridge Management Branch, December 1995. Report No. FHWA-PD-96-001.
  4. “Functional Classifications.” https://www.dot.ny.gov/divisions/ engineering/applications/traffic-data-viewer/tdv-definitions/Functional-Classifications.htm. 26 October 2019.
  5. U. S. Federal Highway Administration. FAU-1405 (Lake St) over S BR Chicago Riv. Cook County, Illinois. Bridge Reports.com National Bridge Inventory Data. By James Baughn. 2012-2019. https://bridgereports.com/1139881. 26 October 2019.

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