Waterway Area Measured Normal to The Flow At Downstream End of The Structure - Right Overbank

The right overbank flow area under the bridge/culvert at the downstream end of the structure measured normal to the flow. This area must be measured by the program user. The area does not include bridge piers or flow above the low chord elevation.

When the overbank sections are relatively small, and where the channel is likely to move laterally within the structure, consider analyzing the flow as being all channel flow without overbank sections.

Click here to see the sketch of section.

Click here to see the sketch of culvert section