20210404 Ver 1_Deep River Rd Stormwater Plans_20210326

(Version 2.08; Released April 2018)
17BP.7.R.127 TIP No.:400067 County(ies):Guilford Page 1 of 1
TIP Number:Date:
Phone:Phone:
Email:Email:
County(ies):
CAMA County?
Yes
Design/Future:Year:2025 Existing:Year:
Aquatic T&E Species?No Comments:
Yes No
No
N/A
Deck Drains Discharge Over Water Body?(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)
ac.
Deep River Rd (SR 1523/1538): 2 paved lanes (total 22' wide), open and unpaved
shoulder on both sides
9800
[e-mail]
Project Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?
NRTR Stream ID:
Annual Avg Daily Traffic (veh/hr/day):
Existing Site
Project Length (lin. miles or feet):
ac.
Surface Water Body (1):
Water Supply IV (WS-IV)NCDWR Surface Water Classification for Water Body
Randleman LakeBuffer Rules in Effect:
None
4900
Deep River Rd (SR 1523/1538): 2 paved lanes (total 24' wide), 6' shoulder on each side.
The first 4' of the shoulders are paved.
Waterbody Information
2013
NCDWR Stream Index No.:
17BP.7.R.127
Impairments:
Other Stream Classification:
Primary Classification:
Project Built-Upon Area (ac.)
The North Carolina Department of Transportation (NCDOT) has proposed to replace Guilford County Bridge #67 on Deep River Road ( SR 1523/1538) over Deep River. The
existing structure is a four span bridge (1@30', 1@45', and 2@30') and is a precast, prestressed concrete cored slab. The proposed structure is a 3 span (1@35', 1@70', and
1@45'), 24" Cored Slab with 4' Deep Caps. This structure has been designed to have as little environmental, wetland, and surface water impacts as possible. Permanent
drainage easement (PDE) will be set to have as little wetland impact as possible. Class I rip rap and geotextile were utilized for bank stabilization to reduce stream bank erosion
at the outlet of the ditch into Deep River. To avoid direct discharge of bridge storm water into the recieving water, deck drains are not required for the proposed bridge. Storm
water impacts to the river have been minimized by utilizing a grated inlet and pipe to collect bridge storm water and use rip rap outlet protection at Sta. 16+35 to dissipate energy
and provide a non-errosive flow into the river. In the SE, SW, and NW quadrants, there are no roadside ditches being retained. Those roadway sections are in fill and the runoff
discharges as sheet flow off the pavement through grassed shoulder to remove pollutants via infiltration and settling before entering into the buffer zones. In the NE quadrant,
there is a special cut ditch along the roadway leading to an existing 24" RCP that is being retained and extended and discharges on the NW quadrant into a rip rap lined ditch
and down the embankment to the river at a non errosive velocity. Due to the nature of low impact bridge replacement, the increase in stormwater discharges (pre vs. post
conditions) are insignificant. Therefore, additional stormwater measures are not required.
Mott MacDonald
North Carolina Department of Transportation
Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
FOR NCDOT PROJECTS
Project Type:
Highway Division 7 Address:
General Project Information
400067
WBS Element:
Bridge ReplacementWBS Element:
Eleni Riggs, PENCDOT Contact:
[phone]
7621 Purfoy Rd. Suite 115
Fuquay Varina, NC 27526
Contractor / Designer:
[phone]
[e-mail]
Greensboro, NC 27415
Address:
1/28/2021
GuilfordHigh Point
Tim Powers, PE
1584 Yanceyville Street, PO Box 14996
River Basin(s):
City/Town:
0.8
Typical Cross Section Description:
Surrounding Land Use:
General Project Narrative:
(Description of Minimization of Water
Quality Impacts)
No
Low Residential, Wooded
Deep River 17-3-(1.5)
0.6
0.244 miles
Project Description
Proposed Project
Cape Fear
None
Supplemental Classification:
Wetlands within Project Limits?