Half viaduct
![](../I/m/HAER_HCRH_OR-36-J-6.jpg)
A half viaduct on the Historic Columbia River Highway
A half viaduct is a type of viaduct built into a hillside, where only part of the road is supported by the structure.
This article is issued from
Wikipedia.
The text is licensed under Creative Commons - Attribution - Sharealike.
Additional terms may apply for the media files.