20190331 Ver 1_17BP.9.R.76_HYD_SMPv2.07_(Oct 2016)_20190311

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STORMWATER MANAGEMENT PLAN —
(Version 2.07; Released October 2016) FOR NCDOT PROJECTS
WBS Element: 17BP.9.R.76 TIP No.: N/A County(ies): Rowan Page 1 of 1
General Project Information
WBS Element: 17BP.9.R.76 TIP Number: N/A Project Type: Bridge Replacement Date: 2/25/2019
NCDOT Contact: Galen Cail Contractor / Desi ner: STV En ineers Inc.
Address: 1020 Birch Ridge Drive Address: g00 West Trade Street, Ste. 715
Raleigh, NC 27610 Charlotte, NC 28202
Phone: [phone] Phone: [phone]
Email: cail ncdot. ov Email: Edward.Vance stvinc.com
Cit ITown: Salisbu Count ies : Rowan
River Basin s: Yadkin-Pee Dee CAMA Count ? No
Wetlands within Project Limits? Yes
Pro'ect Description
Pro'ect Len th lin. miles or feet : 770 ft. Surrounding Land Use: Mainly forested wetland with dense underbrush (Bridge is in Yadkin River floodplain)
Proposed Pro'ect Existin Site
Pro'ect Built-Upon Area ac. 0.4 ac. 0.3 ac.
Typical Cross Section Description: (Approach) Two 10' lanes with 3' shoulder (Approach) Two 8' lanes
(Bridge) Two 10' lanes with 2'-5" shoulder (Bridge) One 13' lane
Annual Avg Daily Traffic (veh/hr/day): Desi n/Future: 260 Year: 2025 Existin : 130 Year: 2000
General Project Narrative: The existing bridge (2@15'-4") is being replaced with a proposed 55' single span cored slab with 4'-0" end bent caps. The bridge will have a 4% super elevation with 10' lanes
(Description of Minimization of Water and 2'-5" paved shoulders. Clear width of the bridge is 24'-10" and it is 27'-0" out to out.The proposed bridge is on an off-alignment (downstream) of the existing bridge due to
Quality Impacts) water main conflicts. Existing drainage patterns have not been altered significantly with the off-alignment due to the majority of wetland and ponded topography surrounding
each quadrant. Existing bridge abutments shall remain in place to prevent utility impacts. The drainage system that is being used to pick up the bridge runoff consists of one
traffic beating grate inlet that discharges into the wetland in the north-west quadrant. It will discharge on a proposed class-B riprap pad to dissipate energy of the flow coming
down the steep slope. Coir fiber matting will be used on the flood bench excavation area under the bridge to minimize erosion and facilitate stabilization as well. 8" x 4" deck
drains will be installed to meet the spread criteria on bridge.
Waterbody Information
Surface Water Body (1): Deals Creek NCDWR Stream Index No.: 12-109
NCDWR Surface Water Classification for Water Body Primary Classification: Class C
Supplemental Classification: None
Other Stream Classification: None
Impairments: None
Aquatic T&E Species? Comments:
NRTR Stream ID: Buffer Rules in Effect: N/A
Project Includes Bridge Spanning Water Body? Yes Deck Drains Discharge Over Buffer? No Dissipator Pads Provided in Buffer? N/A
Deck Drains Discharge Over Water Body? No (If yes, provide justification in the General Project Narrative) (If yes, describe in the General Project Narrative; if no, justify in the
(If yes, provide justification in the General Project Narrative) General Project Narrative)