A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stage construction plans of Oregon Highway Commission call for ultimate concrete lining of 779 ft; Sunset tunnel now in use with treated fir timber lining supported on concrete sills.
Stage construction plans of Oregon Highway Commission call for ultimate concrete lining of 779 ft; Sunset tunnel now in use with treated fir timber lining supported on concrete sills.
Timber-lined Highway tunnel
Western Construction News
Benedict, A.V. (author)
1942
4 pages
Article (Journal)
English
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