Bayview Sand Mine - Temp Stream Crossing

Temporary Stream Crossing Construction Details:
Practice Standards and Specifications 6.70
Bayview Sand Mine
Powells Point, NC
Currituck County

Definition and purpose: A temporary structure installed across a stream or watercourse for short-term
use by construction vehicles or heavy equipment. Its purpose is to provide a means for vehicles to cross
streams without moving sediment into streams, damaging the streambed, or causing flooding.
Design considerations: 12ft wide sand access road through pocosin wetlands at Eure Sand Mine will
have single culvert installed every 200 feet to provide positive continuity of water flow through
wetlands. Bottom of culvert will be installed minimum 20% below natural roadbed height. Remainder
of access road will remain at natural ground level for sheet-flow overflow of rainfall.
Maintenance: Inspect stream crossings periodically and after major storms to check for channel
blockage, erosion of abutments, channel degradation, riprap displacement, slope failure, and piping.
Make all needed repairs immediately to prevent further damage to the installation.

Ken Elliott, consulting
December 3, 2017