Police departments do not routinely ticket for 5 mph over. The courts would be overloaded and would object big time. I very rarely see speeding enforcement in US-58 on on I-295. Speedaholics have been making these claims for decades, and if they were true the state government would have put a stop to it.
How often do you use US-58? From Richmond, I wouldn't imagine that often, or ever. I-95 takes you through. I use it plenty, and I see police enforcement all the time. I know somebody who utilizes I-295 twice a week, and they almost always see at least 2 police officers setting up radar. AAA has called that speed trap out before for making over $2 million per year.
It's not "speedaholics" making the claims about enforcement, it's facts. If in theory you were to set up cameras on the US-58 bypass and record over a 24 hour period, you would see the heavy enforcement, the numerous of people pulled over, etc.
And when you use the term "speedaholics", you make the claim sound like a reckless driver, in which, I rarely see on US-58. All the traffic stops I'm aware of, and I've spoken to people who have been pulled over for doing only 5-7 over, were not in any way reckless, just simply around 65 - 67 MPH, which might I say, that highway can safely handle 70 MPH. It's 90's design, wide curves, limited-access, wide lanes, and wide shoulders. There's no safety concern, it's revenue generation.