Pons Triangulum. Lake Street Bridge, #4: Bridge Details: Bracing, Road and Rail.

By Divi Logan. Staff Photographer and Author, Bridges to Rails, Gravitational Lens, and Bridge Gear.

PONS Lake St Lattices 1 #027 061819 1805

Lattice bracing on diagonal member of Warren Truss. #027

PONS Lake St Bracing #033 061819 1805

#033: Truss web, roadway deck, lattice bracing and rivets.

PONS Lake St Bracing #044 061819 1806

#044

PONS Lake St Bracing #051 061819 1806

#051

PONS Lake St Bracing #073 061819 1808

#073: Bridge tender’s house with historic plaque seen through truss web lattices.

PONS Lake St Bracing #086 061819 1810

#086

PONS Lake St Bracing #087 061819 1810

#087

PONS Lake St BraceGusset #100 061819 1810

#100

PONS Lake St BraceGusset #101 061819 1810

#101: Truss web, train deck, roadway deck, and lattice bracing.

PONS Lake St BraceTruss #103 061819 1811

Road deck and parts of the Warren Truss web through the close-up lattices of a diagonal member. #103

PONS Lake St BraceTruss #104 061819 1811

Train deck, road deck, and truss web. #104.

PONS Lake St Lattices #114 061819 1811

#114

PONS Lake St Lattices #115 061819 1811

#115

PONS Lake St LatBr #561 061819 1855

#561: Train deck over the clear span.

PONS Lake St LatBr #562 061819 1855

#562

PONS Lake St LatBr #578 061819 1857

#578

PONS Lake St LatBr #592 061819 1859

#592

PONS Lake St LatBr #602 061819 1900

#602

PONS Lake St LatBr #604 061819 1900

#604

PONS Lake St LatBr #608 061819 1900

#608

PONS Lake St LatBr #615 061819 1901

#615

PONS Lake St LatBr #632 061819 1903

#632

PONS Lake St LatBr #633 061819 1903

#633

PONS Lake St LatBr #634 061819 1903

#634

PONS Lake St LatBr #640 061819 1904

#640

PONS Lake St LatBr #641 061819 1904

#641

PONS Lake St LatBr #642 061819 1904

Train deck access stairway, lattice bracing, and train deck bracing. #642.

PONS Lake St LatBr #647 061819 1904

Near the center of the bridge, on the south side of the span. #647.

PONS Lake St LatBr #657 061819 1905

The train deck access stairway, looking north. #657.

PONS Lake St LatBr #661 061819 1906

#661

PONS Lake St LatBr #751 061819 1917

#751

PONS Lake St LatBr #755 061819 1917

#755

PONS Lake St LatBr #759 061819 1918

#759

PONS Lake St LatBr #765 061819 1918

#765

PONS Lake St LatBr #769 061819 1918

#769

PONS Lake St LatBr #770 061819 1918

#770: Truss beams supporting the train deck’s approach span are in the background.

PONS Lake St LatBr #771 061819 1919

#771

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.
  6. U.S. Department of Transportation. Federal Highway Administration. Bridge Inspector’s Reference Manual (BIRM). By Thomas W. Ryan, P.E, J. Eric Mann, P.E., Zachary M. Chill, E.I.T., and Bryan T. Ott. Washington: Government Printing Office. December 2012. (Report No. FHWA NHI 12-050. Performing Organization Report No. 23104 / 106915-HRS/118802). National Technical Information Service in
    Springfield, Virginia 22161.
  7. Comp, T. Allan and Jackson, Donald. Bridge Truss Types: A guide to Dating and Identifying, p. 7. Nashville: American Association for State and Local History. 5 February 2010. Web. 28 October 2019. https://www.arkansashighways.com › Historic Bridge Resources.pdf. 

Divi Logan. Chicago. Updated January 29, 2020.