In the early fall of 2005, several hundred adult salmon returning to spawn were blocked by the culvert. KWF removed the culvert and replaced it with a bridge in Spring 2007.

In the summer of 2003 and 2004 the Kenai Watershed Forum (KWF) more closely evaluated each of the three problem road crossings. It was clear that the College Loop Road presented the greatest potential to block juvenile anadromous fish.

The culvert at this crossing had been so badly crushed that parts of it were sticking up through the road surface and it was too narrow compared to the normal width of the stream. To avoid the jagged culvert, drivers were illegally trudging through the salmon stream, destroying habitat for spawning and rearing.