I had to look this up just to see what this 'right-left' swerve looked like on a bridge... found the following article [1] (from an insurance company no less!) with a picture and a link to an old news article [2] about the missing teen driver.

[1] https://pemco.com/blog/closed-drawspan-evokes-memories-of-th...

[2] https://news.google.com/newspapers?nid=860&dat=19810915&id=z...