Kane County Division of Transportation
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ERA provided Phase I and II engineering for the replacement of the restrictive culvert on Bliss Road servicing Lake Run Creek for the Kane County DOT. The existing culvert was significantly undersized and flood events have caused 12 inches of scour on the upstream side, erosion of the end section and embankments on the downstream side. The Phase I report required various design alternatives for the replacement of the culvert along with associated construction cost estimates, wetland delineation, and permitting requirements. The Phase II engineering consisted of construction documents for the new culvert which included stream bank stabilization plans, maintenance of traffic plans and structural plans. The project was constructed under stage construction using temporary steel sheet piling. The new culvert project improves the hydraulic efficiency, fixes the upstream scour and downstream streambank erosion. Permits were acquired through Kane County, Army Corps, IDNR-OWR, Kane-DuPage SWCD.
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