Cost for Two 20' Culverts

This is a rough illustration of two separate culverts crossing under 1120 North. One culvert would contain the wetlands, the other a pedestrian trail. This illustration shows retaining walls. We have indicated a preference instead for 3:1 landscaped slope sides.



This document shows estimated cost for placing two culverts and completing the road. This is based on 2008 estimates. Also, this estimate includes retaining walls. We have explored the option of using landscaped 3:1 sloped sides instead to maintain the feel of the hollow.

This is a current (late 2009) cost analysis which includes placement of two culverts (bottom - in pink). This cost does not include completion of the road above. In orange, I believe, is the cost of a single trail crossing over the road. On top (in yellow), the cost estimate is for two culverts and a retaining wall instead of sloped sides.

These current costs are significantly less than 2008 estimates because of a reduction in costs generally because of the slowing economy. Also, the city has already acquired fill at a reduced price from prior estimates. Again, this sheet of 2009 estimates does NOT include the costs of completing the road, while the 2008 estimates do.