Since blawp started a topic about the worst stretches of freeway in so-cal, I'd thought it would be a good idea to start a similar thread for those of us in northern California (primarily the San Francisco Bay Area and the Sacramento Metro Area). All I ask is one thing... do not put the word
"the" before a route number (i.e. "the 5" or "the 101"). That is strictly a southern California thing and is a hated practice by most native northern Californians.
Here are my least favorites...
* Highway 85 north of I-280 -- This is the older segment of 85 built back in the 60's and 70's where the concrete has failed in numerous places making this section of freeway very bumpy. Fortunately 85 is getting repaved over the next few months or so... it's about time!
* I-580 over the Altamont Pass -- Again, incredibly poor road surface, a ton of truck traffic all day and a ton of commute traffic in the mornings and evenings.
* I-580/I-680 interchange -- This is an outdated cloverleaf interchange that routinely backs up traffic onto I-580 west into Livermore during the morning commute. Caltrans built a high-speed flyover ramp but it goes from south 680 to east 580

when it should have gone from west 580 to south 680!

* US 101/I-880 interchange -- Another outdated cloverleaf interchange that simply cannot handle the large volume of traffic transitioning between these two very busy freeways.