Hiked Red Town Trailhead to Coal Creek Pkwy and back. The main trail is completely clear (no obstacles). The Primrose segment has two trees down, both about 8-10" in diameter. One is flat on the trail and you can step over it. The other (not in the same spot) is above the trail with enough room to either stoop/crawl under it or swing a leg over. I'm five feet tall and I could swing a leg, sit on it, then swing the other leg. Children and dogs will be able to go under comfortably. There's also one segment of the informational/learning trail near Red Town that has some thin branches down across the trail, but they can be walked around.
Fairly little mud, nothing thick, and no other issues.

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