20190755 Ver 1_B-5375_HYD_SMP_20190610

(Version 2.08; Released April 2018)
North Carolina Department of Transportation
Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
FOR NCDOT PROJECTS
WBS Element: 17BP.10.R.145 TIP No.: B-5375 County(ies): Cabarrus Page 1 of 1
General Project Information
WBS Element:
17BP.10.R.145 ITIP Number: B-5375 Project Type: Bridge Replacement Date: 2/1/2019
NCDOT Contact:
Marc Shown
Contractor / Desi ner:
ISTV 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:
Locust
Count ies :
Cabarrus
River Basins :
Yadkin -Pee Dee
I CAMA County?
No
Wetlands within Project Limits?
Yes
Project Description
Project Length (lin. miles or feet):
0.09 Surrounding Land Use: Woded
Proposed Project
=A Existing Site
Project Built -Upon Area ac.
0.28 ac.
0.21 ac.
Typical Cross Section Description:
Bridge : Two 10' lanes, 3'-10" paved shoulders
Approach: Two 10' lanes, variable paved shoulders
Bridge: Two 9' lanes, 3' shoulders
Approach: Two 9' lanes, 6' and 4' left and right shoulders
Annual Avg Daily Traffic (veh/hr/day):
Design/Future: 980 Year: 2025
Existing: 490 Year: 2012
General Project Narrative:
(Description of Minimization of Water
Quality Impacts)
The existing 143' six span bridge over Dutch Buffalo Creek on SR 1132 (Miami Church Rd.) is being replaced with a 160' triple -span bridge with a span arrangement of 1 @50'
(21" cored slab), 1@70' (24" cored slab) and 1@40' (21" cored slab). The bridge will have 1.5:1 sloping abutments with 4' end bent caps. The bridge will be normal crown at 2%
with 10' travel lanes and 3'-10" shoulders, 27"-8" clear width and 30'-0" OTO width. The existing bridge structure will be removed. Overall drainage patterns will be maintained.
There are roadside ditches that flow on both begin and end of the bridge on left side. The proposed design will interfere with both of the existing ditches flow patterns. Proposed
ditches will be used to maintain flow to the bridge. On the begin and end side of the bridge, two (four in total) traffic bearing grated drop inlet with double frame and grates (2GI)
was placed on the right 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. Deck drains are not needed. No dissipator pads were used because the Class -II rip rap will prevent erosion and
dissipate flow.
Waterbody Information
Surface Water Body 1 : Dutch Buffalo Creek
NCDWR Stream Index No.:
13-17-11-(5)
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