20171465 Ver 1_SW Plan_20171115

F �l�-;Il�v�ly North Carolina Department of Transportation
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,.,.�,,, � Highway Stormwater Program �;'
STORMWATER MANAGEMENT PLAN _ -
(Version 2.06; Released June 2016) FOR NCDOT PROJECTS
WBS Element: 17BP.9.R.61 TIP No.: 840129 County�ies): Stokes Page 1 of 1
General Project Information
WBS Element: 17BP.9.R.61 TIP Number: 840129 Project T pe: Brid e Replacement Date: 9/15/2016
NCDOT Contact: Galen Cail, PE Contractor I Desi ner: Joshua G. Dalton, PE
Address: Hydraulics Unit Address: Sungate Design Group, PA
1590 Mail Service Center 915 Jones Franklin Road
Ralei h, NC 27699-1590 Ralei h, NC 27606
Phone: [phone] Phone: [phone]
Email: cail ncdot. ov Email: 'dalton sun atedesi n.com
Cit ITown: ML Ai Count ies : Stokes
River Basin s: Roanoke CAMA Count ? No
Wetlands within Project Limits? No
Pro'ect Description
Pro'ect Len th lin. miles or feet : 0.091 miles Surroundin Land Use: Rural, Residential, Agricultural
Proposed Pro'ect Existin Site
Pro'ect Built-Upon Area ac. 0.3 ac. 0.2 ac.
Typical Cross Section Description: Two (2) 10' wide paved travel lanes with grass shoulders and ditch sections. Two (2) 9' to 10' wide paved travel lanes with grass shoulders and ditch sections.
Annual Avg Daily Traffic (veh/hr/day): Desi n/Future: 870 Year: 2014 Existin : 870 Year: 2014
General Project Narrative: This project involves the replacement of Bridge Number 840129 over South Double Creek on SR 1484 (Dan George Road) and improvements to the roadway approaches in
(Description of Minimization of Water each direction. The bridge replacement and associated approaches have been designed to minimize increases in impervious surface area and maintain existing drainage
Quality Impacts) patterns. No deck drains are proposed for the replacement bridge. Deck drainage will be collected by grate inlets at the roadway sag location north of the bridge and discharged
to a roadway ditch on the east side of the road. A rip-rap outlet pad will be installed at the dicharge pipe to protect against erosion. Proposed ditches on the northeast and
southwest quadrants of the bridge are intended to replace existing roadway ditches that will be covered by shoulder fill material, and are of similar size and grade to the existing
ditches they will replace. Rip-rap ditch linings are proposed for all or portions of the proposed ditches to control runoff velocity and erosion.
Waterbody Information
Surface Water Body (1): South Double Creek NCDWR Stream Index No.: 22-11
NCDWR Surface Water Classification for Water Body Primary Classification: Class B
Supplemental Classification: None
Other Stream Classification: None
Impairments: mercury (Hg)
Aquatic T&E Species? Yes Comments: James Spinneymussel (Bio Conclusion: may affect, not likely to adversely affect). Will utilize design standards for sensitive watersheds.
NRTR Stream ID: N/A Buffer Rules in Effect: N/A
Project Includes Bridge Spanning Water Body? Yes Deck Drains Discharge Over Buffer? N!A Dissipator Pads Provided in Buffer? N/A
Deck Drains Discharge Over Water Body? No (If yes, provide justification in the General Project Narrative) (If yes, describe in the General Project Narrative; if no, justify in the
(If yes, provide justifcation in the General Project Narrative) General Project Narrative)