20191362 Ver 1_Copy of (SF-830162)_HYD_SMPv2.08_(20180727) (Apr 2018)_20191007

Highway North Carolina Department of Transportation
- Stormwater Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
(Version 2.08; Released April 2018) FOR NCDOT PROJECTS NINE:
WBS Element: 17BP.10.R.133 TIP No.: SF-830162 County(ies): Stanly Page 1 of 1
General Project Information
WBS Element:
17BP.10.R.133 ITIP Number: SF-830162 Project Type: Bridge Replacement Date: 7/27/2018
NCDOT Contact:
Marc Shown
Contractor / Desi ner:
STV Engineers Inc. / Shirshant Sharma
Address:
1020 Birch Ridge Drive
Raleigh, NC 27610
Address:
900 West Trade Street, Ste. 715
Charlotte, NC 28202
Phone:
919 707-6751
Phone:
704 816-2556
Email:
[e-mail]
Email:
[e-mail]
City/Town:
Norwood
Count ies :
Stanl
River Basin(s):
Yadkin -Pee Dee
ICAMA County?
I No
Wetlands within Project Limits?
No
Project Do lion
Project Length (lin. miles or feet):
0.089 miles T Surrounding Land Use: IRural, wooded, agricultural
Proposed Project
Existing Site
Project Built -Upon Area ac.
0.3 ac.
0.2 ac.
Typical Cross Section Description:
Bridge : Two 10' lanes, 3'-3" paved shoulders
Approach: Two 10' lanes, 3'-0" paved shoulders
Bridge: Two 7.9' lanes, no shoulders
Approach: Two 8' lanes, 4' grassed shoulders
Annual Avg Daily Traffic (veh/hr/day):
Design/Future: 800 Year: 2025
Existing: 400 Year: 2001
General Project Narrative:
(Description of Minimization of Water
Quality Impacts)
The existing single span 25'-8" bridge over Hardy Creek on SR 1923 (Old Cottonville Rd) is being replaced with a single span (1@70') 24" cored slab bridge with 4' end bent
caps. The bridge will be superelevated at 4% with 10' travel lanes and 3'-3" shoulders, 26"-6" clear width and 30'-0" OTO width. The existing bridge structure will be removed
and the aburtments will be cut off at elevation 344 ft. Overall drainage patterns will be maintained. There are roadside ditches that flow towards the bridge on both sides of the
structure. The proposed design will interfere with three of the existing ditches flow patterns. Proposed ditches and a channel change will be used to maintain flow to the bridge.
On the end side of the bridge, a concrete flume was placed on the left side of the roadway in the shoulder berm gutter to pick up runoff from the bridge. Class -II rip rap abutment
protection on both banks of the stream is also proposed to prevent future erosion and stream migration. No deck drains are needed. No dissipator pads were used because the
Class -II rip rap will prevent erosion and dissipate flow. A proposed water line crossing construction will also be performed as part of this project which will cross the stream
downstream of the proposed bridge. The work area shall be cordoned off with impervious dikes and pump around operation and the sediment laden water within the work area
shall be filtered out using a special stilling basin.
Waterbody Information
Surface Water Body 1 : Hardy Creek
NCDWR Stream Index No.:
13-17-42
NCDWR Surface Water Classification for Water Body
Primary Classification:
Class C
Supplemental Classification:
None
Other Stream Classification:
None
Impairments:
None
Aquatic T&E Species?
No Comments:
NRTR Stream ID:
Buffer Rules in Effect: N/A
Project Includes Bridge Spanning Water Body?
iYes
I Deck Drains Discharge Over Buffer? INo
Dissipator Pads Provided in Buffer? INo
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)
L. (If yes, provide justification in the General Project Narrative) I