Cross street culverts and bridges shall be designed to the criteria in the following table:
Table 10-4.2
Culvert and Bridge Design Criteria
Street Classification | Peak Frequencies | ||
10-Year | 50-year | 100-year | |
Local and minor collector | Runnoff to be conveyed by culvert or bridge under road with no flow overtoppng the road | Runnoff to be conveyed by culvert or bridge and by flow over the road wit a maximum 6-inch flow depth over the road. | Runnoff to be conveyed by culvert or bridge and by flow over the road with a maximum 12-inch flow dept over the road. |
Collector, arterial and parkway | Runnoff to be conveyed by culvert or bridge under road with no flow overtopping the road. | Runnoff to be conveyed by culvert and by flow over the road with maximum 6-inch flow depth over the road Minimum freeboard for bridges is 2 feet. | |
(Ord. passed - - )