20210561 Ver 1_Iredell 136 Stormwater Management Plan_20210312

(Version 2.08; Released April 2018)
DF17112.2049802 TIP No.:SF-480136 County(ies):Iredell Page 1 of 1
TIP Number:Date:
Phone:Phone:
Email:Email:
County(ies):
CAMA County?
No
Design/Future:Year:Existing:Year:
Aquatic T&E Species?No Comments:
Yes No
No
Wetlands within Project Limits?
None
None
Supplemental Classification:
Undeveloped woodlands and agricultural fields.
South Yadkin River 12-108-(5.5)
0.3
0.111 Miles
Project Description
Proposed Project
Yadkin-Pee DeeRiver Basin(s):
City/Town:
0.4
Typical Cross Section Description:
Surrounding Land Use:
General Project Narrative:
(Description of Minimization of Water
Quality Impacts)
No
[e-mail]
Address:
2/15/2021
Iredellnear Statesville, NC
Steve Rackley, PE, Division 12 Bridge Manager
Shelby, NC 28151-0047
WBS Element:
Bridge ReplacementWBS Element:
Bradley S. Ridnour, PE, NCDOT Contact:
[phone]
1318-F Patton Avenue
Asheville, NC 28806
Contractor / Designer:
[phone]
Vaughn & Melton Consulting Engineers
North Carolina Department of Transportation
Highway Stormwater Program
STORMWATER MANAGEMENT PLAN
FOR NCDOT PROJECTS
Project Type:
PO Box 47 Address:
General Project Information
SF-480136DF17112.2049802
Impairments:
Other Stream Classification:
Primary Classification:
Project Built-Upon Area (ac.)
This is an emergency bridge replacement project of Bridge No. 136 on SR 1561 (Liberty Hill Road) over the South Yadkin River in Iredell County. The existing 6-span timber
and steel bridge was washed out on November 12, 2020, during a major flood event. The proposed replacement structure will be a 3 @ 90’ L x 33’ W x 33” D box beam
bridge on existing location. The project will also require the reconstruction of approximately 103 linear feet of streambank on the south side of the river (south end bent), which
will be constructed out of soil and Class VII rip rap to provide long term bank stabilization. The two new interior bends (4 @ 42-inch drilled piers) will not be placed in the
active river channel. The proposed roadway improvements will require ditch realignment and the addition of a new drainage structure to convey stormwater runoff on the north
end of the bridge. A rip rap pad will be used at the pipe outlet to reduce water velocities and dispurse flow. There will be no deck drains discharging within 10' either side of
the river. Best management practices will be implemented according to the approved NCDOT sedimentation and erosion control plan to minimize potential impacts to
downstream aquatic resources. The project is located in a rural area with scattered single family dwellings in the vicinity of the project. There should be no stormwater
impacts to the project area as a result of this project.
N/ABuffer Rules in Effect:
None
2 @11' Travel Lanes with 4' shoulders (2' Paved) with 2:1 to 6:1 side slopes.
Waterbody Information
NCDWR Stream Index No.:
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
ac.
2 @ 9' Travel Lanes with no shoulders.
[e-mail]
Project Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?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
G l P j N i )