Pons Triangulum #2B. The Lake Street Bridge’s Truss Web and Decks. High Quality Photographs are Essential to Infrastructure Inspection.

By Divi Logan. Staff Photographer and Contributor for Bridges to Rails and EDUSHIRTS.

Bridges to Rails: Portable Photographic Power for Infrastructure Inspection!

A walk along the massive, double-leaf bascule, double-deck, Warren through-truss bridge at Lake Street on the South Branch of the Chicago River reveals details about its construction and its purposes in the complex infrastructure of the City of Chicago, Cook County, and Illinois.

TRUSS WEB and TRAIN AND ROAD DECKS

PONS Lake St Web+Decks #134 061819 1813

#134

PONS Lake St TrDeck+Web #136 061819 1813

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PONS Lake St TrDeck+Web #147 061819 1814

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PONS Lake St TrDeck+Web #148 061819 1814

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PONS Lake St TrDeck+Web #154 061819 1814

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PONS Lake St TrDeck+Web #155 061819 1814

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PONS Lake St TrDeck+Web #156 061819 1815

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PONS Lake St TrDeck+Web #157 061819 1815

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PONS Lake St TrDeck+Web #240 061819 1824

#240

PONS Lake St TrDeck+Web #261 061819 1825

#261

PONS Lake St TrDeck+Web #268 061819 1826

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PONS Lake St Web+Decks #272 061819 1826

#272

PONS Lake St Decks+Web #278 061819 1827

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PONS Lake St Decks+Web #280 061819 1827

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PONS Lake St Decks+Web #281 061819 1827

#281

PONS Lake St EPortal #433 061819 1842

Truss web details with V-bracing, rivets, utilities, and lighting at the east portal. #433.

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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