Pittsburgh's Bridges by Todd Wilson PE

Author:Todd Wilson PE
Language: eng
Format: epub
Tags: unknown
Publisher: Arcadia Publishing Inc.
Published: 2015-01-15T00:00:00+00:00

It took six days for contractors to remove the imploded Brady Street Bridge from the river. The 607-foot tied arch Birmingham Bridge behind it was completed in 1976, years after its piers were constructed in 1969. Planned to be part of a highway from the South Side through Oakland to the Allegheny River valley, the bridge has stubs for ramps that were never built. (Carnegie Library of Pittsburgh.)

Iron was smelted at Eliza Furnaces, cast into pig, ferried across the Monongahela River, and reheated for production at Jones and Laughlin’s American Iron Works. The process was streamlined when a hot-metal bridge was constructed in 1887 to carry molten iron directly across the river. The bridge’s superstructure was replaced in 1901 and was widened with an upstream bridge in 1904. (Library of Congress, Prints & Photographs Division, HAER PA,2-PITBU,65C—6.)

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