So, let me break this down: the SCP is a section of road that makes you paranoid and drives you crazy, but only if you're around it at night, outside of a house. The Foundation finds it when a Foundation agent embedded in a small town is affected and commits suicide.
So, a few questions I'd need answered:
- When did this start happening?
- Why did the Foundation agent not notify anyone? These are people with experience in anomalies and their effects. Why did he not realize what was happening?
- Why is being in a house important? Could it be any building?
As far as containment, it's not entirely out of character fo the Foundation to evacuate entire cities under cover stories of biological agents in the water, nuclear waste underground, etc.
i'm not sure how the foundation would contain it maybe they take pieces of the road and put it back together back a site or maybe they find something underneath the road?
This is really something you, as the writer, need to figure out. Is there a root cause, like, a murder, or some sort of presence that inhabits that stretch of road?
The biggest issue I have here is that it just….sounds like a horror movie plot. Not that that's a bad thing, necessarily, but it doesn't have much substance. What are you going to focus on? The agent's journal entry and his building paranoia? The story behind the anomaly's origin? An incident during initial containment? So far there's a mild air of 'unsettling' but it doesn't really quite get to 'horror', but there's nothing here that really grabs my attention. It also falls into the "Crazy to death" pitfall. Something that makes you go crazy and/or kills you (directly or by proxy) has been done, re-done, and overdone on the wiki and is, at its core, not that interesting to begin with.
I recommend reading a significant amount of the top-rated SCPs from the last several months, and focus on reading more recent SCPs rather than older series. Many early series SCPs would not last a day under current SCP standards, and a few are only still around because of their history with the wiki itself. (This does not apply to all early series SCPs, but many of these were written before the wiki's style had really been cemented.)
The anomalous object, while important, is not actually the main focus of the SCP. A good story, a compelling narrative, something that makes the reader feel something - that is the goal of an SCP article. What feeling do you want to evoke from the reader? Horror? Empathy? Sadness? You need to create a narrative around this object and its effects.
I am not saying this to discourage you, I just want you to understand the amount of effort that goes into creating a successful SCP.
If you can revise this idea with a story that you want to tell, we will be able to give you much more meaningful and constructive critique.