https://www.enr.com/rss/191 en-us More than half of Oregon’s state highway system bridges—that’s more than half of the 2,700 bridges the state department of transportation owns, not even counting the other 4,000 owned by cities and counties—were built in the 1950s and 19060s.

]]> http://www.enr.com/blogs/15/post/24955 Tue, 01 Dec 2015 00:00:00 -0500 https://www.enr.com/blogs/15-evergreen/post/24955-oregon-bridges-at-a-tipping-point