20160955 Ver 1_Project Description_20161004

3d. Explain the purpose of the proposed project:
The purpose of the project is to replace Bridge 371 along Allred Road (SR 2182) over Penwood Branch
with an Aluminum Box Culvert (32'-9"x12'-0").
3e. Describe the overall project in detail, including the type of equipment to be used:
Geotextile fabric and rip-rap will be utilized for bank stabilization, where necessary. A low flow channel
will be constructed inside the culvert to match the existing, normal flow width, depth, and velocity of
the stream. This will maintain sediment transport to provide a stable stream during bankfull discharge.
Floodplain benches will be constructed on both sides of the culvert to reduce shear stress on the
streambed during high flow storm events. Interior baffles and notches were designed for use within the
culvert to stabilize the stream bed due to the steep longitudinal stream slope. Equipment to be used
includes standard heavy highway construction equipment (i.e. excavators, dump trucks, etc.). A
temporary impervious dike and culvert will be installed to allow for work in the dry.