Phoenix Precast specializes in manufacturing box culvert dimensions within the range of a 6-foot span and smaller. We offer different types of box culvert designs from the removable top, open bottom and the 4-sided structure. Precast headwalls, wingwalls, cut-off . Open bottom culverts are environmentally-friendly Dur•A•Span aluminum box culverts are usually supplied as open bottom and are an environmentally-friendly solution, promoting fish passage through the construction period and beyond. Box culverts are used primarily when height is limited and they can accept low cover heights.
Page 3 Design of Open Bottom Arch Culverts I. Select an arch size that will pass the desired design flow with a minimum size equal to the active channel or bankfull width of the existing stream. A. Size for peak flow using manual methods per FHWA handbooks or proprietary programs. Choosing Dirigo for your precast concrete box culverts and arches, as well as having us install them for you, is a great way to reduce project costs while giving you the peace of mind of knowing that your open bottom culverts were installed by the best in the industry.
Oct 22, 2006 · An open bottom culvert sounded interesting since I thought the width was more important than the height. Cutting a 10' culvert in 1/2 would give me a 20' culvert 48" wide. The fish are not the concern but having the culvert wash out is. Perhaps putting the culvert 6-10" down in the creek bed would help the water pass through and lessen chances. Aluminum Box Culvert. Practical, Cost-Effective Solution for Small Bridge Replacement. Aluminum Box Culverts are a practical and cost-effective solution for small bridge replacement. The wide-span, low-rise shapes are lightweight as well as fast and easy to install. Spans to 35 feet.