re: US Highway 90 - Is there a worse section of road in America?

I thought Louisiana had the worst roads until I moved to Pennsylvania.

It's a combination of roads being old and built to standards of a bygone era, winter damage, heavy traffic, and lack of maintenance, which i understand is kind of made worse due to the "turnpike authority" and toll funding models.

The Pennsylvania Turnpike is really a difficult to drive in spots -- heavy traffic, narrower than a normal interstate, and dangerously short on/off ramps. Occasionally, one of these very short approaches will have a stop sign at the end of it immediately prior to merging. You really see the difference when you drive on more modern freeways like I-80 across N PA.