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Seven years ago, lawmakers poured more than $5 billion into improving roads, bridges and public transit in Oregon. Now, lawmakers are in the earliest stages of crafting the next likely multi-billion dollar transportation package – but this time around, the focus is more on maintaining existing roads than expanding or building new ones.

There are few middle-of-the-road (sorry) opinions about the concept known as "road diet."This is the process of taking a four-lane road and turning it…