Quote:
Originally Posted by jamesqf
It also depends a lot on how much wear the road has had. I haven't driven it recently, but there was a time when the stretch of I-80 between Donner Summit and (roughly) Auburn was so badly worn that I was worried about high-centering the Insight on the ruts worn into the concrete. It was also quite rough, with the concrete worn well down into a layer of about 2" or larger aggregate...
Smoothness also matters a lot. I can see a noticeable increase in mpg on concrete just by moving out of the most worn parts.
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They fixed it.
They put in a bunch of concrete around the I-80 Madison Blvd to Auburn Blvd. area (approx). It's soooo smooth even compared to the new asphalt they just laid. I just wish I didn't have to drive on it during construction. The rock debris ruined the windshield and front end of my old Prius and now it is tearing up my brand new Prius. I swear the entire road from Woodland to Auburn (my commute) is being replaced! Ugg