20200306 Ver 1_910216 Stormwater Management Plan_20200225

I Ijush,vav North Carolina Department of Transportation
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Highway Stormwater Program
STORMWATER MANAGEMENT PLAN""'`fir
(Version 2.08; Released April 2018) FOR NCDOT PROJECTS
WBS Element: 1713P.5.R.79 TIP No.: 17BP.5.R.79 County(ies): Wake Page 1 of 1
General Project Information
WBS Element:
17BP.S.R.79 TIP Number: 17BP.5.R.79 Project Type: Bridge Replace Date: 2/25/2020
NCDOT Contact:
Galen Cail
Contractor / Desi ner:
Reid B. Robol - VHB
Address:
1000 Birch Ridge Drive
Address:
940 Main Campus Drive
Raleigh, NC 27610
Suite 500
Raleigh, NC 27606
Phone:
919-707-6711
Phone:
919-754-5005
Email:
cail ncdot. ov
Email:
rrobol vhb.com
City/Town:
Wendell
Count ies :
Wake
River Basin(s):
Neuse I
ICAMACounty?
I No
Wetlands within Project Limits?
Yes
Project Description
Project Length (lin. miles or feet):
0.11 T Surrounding Land Use: IForest, agricultural, and rural residential
Proposed Project
Existing Site
Project Built -Upon Area ac.
1.6 ac.
1.1 ac.
Typical Cross Section Description:
Bridge: 1 @10', 2@11' lanes with 4'-3" paved shoulders and 8' sidewalk (proposed multi-
2@9.4' lanes with 2.0' shoulders. Dead end road at bridge.
use path). Road (-L-):
1 @VAR (10'4), 2@11' lanes with 2' paved shoulders (4.25' w/ guardrail/8' sidewalk) and
4' grass shoulders. Road (-Y1-/-Y2-):
2@9.5' lanes with 2' paved shoulders and 4' grass shoulders.
Annual Avg Daily Traffic (veh/hr/day):
Design/Future: 3200 Year: 2025
1 Existing: 0 Year: 2019
General Project Narrative:
State project 17BP.5.R.79 involves the replacement of the existing NCDOT Bridge #910216 on SR 2366 over Buffalo Creek. Bridge #910216 consists of 2@25.3' timber floor on
(Description of Minimization of Water
salvaged 1-beams with timber caps on timber piles and abutments. The proposed bridge consists of 1@50' 1@35' 21" cored slab with 2'-6" caps. The proposed crossing is
Quality Impacts)
located in Zone AE of FIRM Map number 3720177400J and was studied by Detailed methods. A stormwater ouffall is proposed inside of buffer zone 2 and a Rip Rap pad will be
utilized to dissipate the energy. The standard V ditches at 11+26 L RT and 12+81 L LT meet non -erosive velocity requirement for 10YR discharge. No deck drains are required
for the proposed bridge.
Waterbody Information
Surface Water Body 1 : Buffalo Creek NCDWR Stream Index No.:
27-57-16- 2
NCDWR Surface Water Classification for Water Body
P imary Classification:
Class B
Supplemental Classification:
Nutrient Sensitive Waters NSW
Other Stream Classification:
Impairments:
Aquatic T&E Species?
No Comments:
NRTR Stream ID:
Buffer Rules in Effect: Neuse
Project Includes Bridge Spanning Water Body?
Yes
Deck Drains Discharge Over Buffer? INo
Dissi ator Pads Provided in Buffer? IYes
Deck Drains Discharge Over Water Body?
INo
(If yes, provide justification in the General Project Narrative)
(If yes, describe in the General Project Narrative; if no, justify in the
General Project Narrative)
(If yes, provide justification in the General Project Narrative)