Image: Interstate Br wide

Description: The Interstate Bridge, across the Columbia River, carries the Interstate 5 freeway and connects Portland, Oregon with Vancouver, Washington. This photo, taken from the river's south shore, in Oregon, shows almost the full length of the bridge, which is actually two bridges side by side - one built in 1916–17 and now for northbound traffic only, the other a matching one built in 1957–58 and carrying southbound traffic only. The two bridges have vertical-lift sections at the northern end. The "humped" section visible on the right was included in the 1958 span (the one nearest the photographer) when built, and was added to the 1917 span in 1959; the bridge originally remained at one level (or flat) all the way across the river.
Title: Interstate Br wide
Credit: Own work
Author: Steve Morgan
Permission: See below; user must attribute the photographer (Steve Morgan) on any reuse outside Wikipedia.
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes