Construction of concrete-lined vehicular tunnel, 1090 ft long, 26 ft wide, crossing hill in western Douglas county.
Elk Creek tunnel, Umpqua highway, Oregon
West Construction News Highways Bldr
Western Construction News and Highways Builder ; 7 , n 23 ; p 679-682
1932
4 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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