20200235 Ver 1_R.151_HYD_SMPv2.08_(20180806) (Apr 2018)_20200213

North Carolina Department of Transportation .° °°,/
Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
(Version 2.08; Released April 2018) FOR NCDOT PROJECTS
WBS Element: 17BP.10.R.151 TIP No.: SF-890145 County(ies): Union Page 1 of 1
General Project Information
WBS Element:
17BP.10.R.151 TIP Number: SF-890145 Project Type: Bridge Replacement Date: 5/16/2019
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:
Monroe, NC
Count (ies):
Union
River Basins :
Yadkin -Pee Dee
CAMA County?
No
Wetlands within Project Limits?
No
MW Project Description
Project Length (lin. miles or feet):
0.122 Surrounding Land Use: lWooded
Proposed Project
Existing Site
Project Built -Upon Area ac.
0.45 ac.
1.4 ac.
Typical Cross Section Description:
Bridge : Two 10' lanes, 3'-11" paved shoulders
Approach: Two 10' lanes, variable paved shoulders
Bridge: Two 9' lanes, 3' shoulders
Approach: Two 9' lanes, 6' grassed shoulders
Annual Avg Daily Traffic (veh/hr/day):
Design/Future: 700 Year: 2025
Existing: 350 Year: 2015
General Project Narrative:
(Description of Minimization of Water
Quality Impacts)
The existing 24.5' single -span bridge over Little Richardson Creek on SR 2106 (Macedonia Church Rd) is being replaced with a 60' single -span bridge. The bridge will have
1.5:1 sloping abutments. The roadway typical section through the bridge will be normal crowned at 2% with 10' travel lanes and 3'-11" shoulders, 27"-10" clear width and 30'-0"
OTO width. The existing bridge structure will be removed. The existing abutments will be cut off at elevation 540. Overall drainage patterns will be maintained. Existing roadside
ditches will be replaced by proposed roadside ditches which will be appropriately lined to prevent erosion. On the end side of the bridge, two traffic bearing grated drop inlets
with double frame and grates (2GI) were placed 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. Deck drains are not required. Riprap dissipator pads are proposed at the ends of the ditches where the ditches
outfall into the stream. Impervious dikes will be installed around the existing abutments to prevent the sediment from washing into the stream during the removal of existing
structure.
Waterbody Information
Surface Water Body 1 : Little Richardson Creek
NCDWR Stream Index No.:
13-17-36.4- 0.5
NCDWR Surface Water Classification for Water Body
Primary Classification:
Water Supply IV (WS-IV)
Supplemental Classification:
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