File:Chicago & North Western Railway viaduct over Des Moines River, near Boone, Iowa (HAER).jpg

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Description

English: ELEVATION OF TRUSS, FROM NORTH, WITH TRAIN - Chicago & North Western Railway viaduct over Des Moines River, near Boone, Iowa. This bridge is one of the last projects of noted bridge engineer George Morison, who died two years after the structure was built. The bridge was the longest and heaviest viaduct of its time, and may be the longest extant double-track railroad viaduct in the world. It is listed in the National Register of Historic Places.Historic American Engineering Record, Library of Congress Prints and Photographs Division:

Survey number: HAER IA-44

Date

after 1993

Source

https://cdn.loc.gov/service/pnp/habshaer/ia/ia0400/ia0420/color/571504cv.jpg

Gallery: https://www.loc.gov/resource/hhh.ia0420.photos/?sp=2

This file comes from the Historic American Engineering Record (HAER). This is a program of the National Park Service established for the purpose of documenting historic places. Records consist of measured drawings, archival photographs, and written reports.

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English | +/−

Author

Not provided, Historic American Engineering Record, Survey number: HAER IA-44

Permission
(Reusing this file)

No known restrictions on publication.

This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.