HomeMy WebLinkAbout20151278 Ver 1_Plans_20151210k 11�;11�� <14' North Carolina Department of Transportation
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Highway Stormwater Program �.
STORMWATER MANAGEMENT PLAN
(Version 2.03; Released October 2015) FOR NCDOT PROJECTS
WBS Element: 17BP.13.R.110 TIP No.: SF-100541 County(ies): Buncombe Page 1 of 2
General Project Information
WBS Element: 17BP.13.R.110 TIP Number: SF-100541 Project Type: Bridge Replacement Date: 11/3/2015
NCDOT Contact: M. T. Shown Contractor I Designer: SEPI Engineerin & Construction
Address: 1020 Birch Ridge Dr. Address: 1025 Wade Ave
Raleigh, NC 27610 Raleigh, NC 27606
Phone: 919-707-6751 Phone: 919-789-9977
Email: mshown ncdot. ov Email: bmazzochi se ien ineerin .com
Cit ITown: Burnsville, N.C. Count ies): Buncombe
River Basin s: Broad CAMA County? No
Wetlands within Project Limits? no
Pro'ect Description
Pro'ect Len th lin. miles or feet : 0.06 Surroundin Land Use: Rural Wooded Mountains with small percentage of manicured acreage.
Proposed Pro'ect Existin Site
Pro'ect Built-Upon Area ac. 02 ac. 0.1 ac.
Typical Cross Section Description: Travel lanes will be 2@ 10' with 3'-7' shoulders. The roadway grade will remain The existing road is 17' BST with minimal grassed shoulders.
approximately the same.Therefore minimal additional fill will be added to this project site.
Annual Avg Daily Traffic (veh/hr/day): Desi n/Future: Year: Existin : 310 Year: 2009
General Project Narrative: The purpose of this project is the replacement of Bridge No. 541 over Glade Creek in Buncombe County. The existing bridge is a 20' 6" single span timber bridge with a 16.8'
(Description of Minimization of Water clear deck. It will be replaced with a 2@ 9'x6' CIP RCBC structure. Clear roadway over the new structure will be 26'. Drainage patterns will not be substantially changed from
Quality Impacts) existing. An existing 30" pipe outfalls 3 feet from the toe of the channel (JS line). This pipe will be replaced with a 36" RCP, moved slightly downstream to allow for a greater
offset (5').
Waterbody Information
Surface Water Body (1): Glade Creek NCDWR Stream Index No.: 6-36
NCDWR Surface Water Classification for Water Body Primary Classification: c
Supplemental Classification: tr
Other Stream Classification:
Impairments: None
Aquatic T&E Species? No Comments:
NRTR Stream ID: Buffer Rules in Effect: N/A
Project Includes Bridge Spanning Water Body? No Deck Drains Discharge Over Buffer? N/A Dissipator Pads Provided in Buffer? N/A
Deck Drains Discharge Over Water Body? N/A (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)
I Ii�;E71�'�]V North Carolina Department of Transportation � �
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,�- . Highway Stormwater Program �;'
STORMWATER MANAGEMENT PLAN —'��
(Version 2.03; Released October 2015) FOR NCDOT PROJECTS
WBS Element: 17BP.13.R.1' TIP No.: SF-100541 County(ies): Buncombe Page 2 of 2
Bridge to Culvert Avoidance and Minimization
Proposed Structure Summary
Sheet No. & Station Sheet No.: 4 Station: 12+48.5 Number of Culverts: 2
Drainage Area (ac or sq mi): 1.2 sq mi Culvert Width/Diameter (ft : 9
Surface Water Body: 1 Glade Creek Culvert Height (ft): 6
Culvert T e: RCBC Culvert Length ft 82
Avoidance and Minimization Efforts: The culvert has been designed to the minimum length that wills accommodate the proposed roadway while maintaining traffic through
(Bridge to Culvert) construction.
Stream Slope Fish and/or Aquatic Life Passage
Existing Average Stream Slope (°/a): 0.50 % Existing Low Flow Channel Dimensions 9-10' wide
Proposed Culvert Slope (%): 0.48 % in the Stream:
Culvert Burial
Proposed Culvert Burial Depth (ft): 1'
Existing Streambed Material: sand, gravel, cobble Proposed Low Flow Dimensions Low flow barrel is 9' wide.
Through the Culvert:
Proposed Sills/Baffles: The low flow barrel will be buried one foot, with a one
foot sill. The secondary barrel will be have a sill Existing Low Flow Velocities in the
height of 1.5'. Stream (ft/s): 4.3
ropose ow ow e oci ies roug
the Culvert (fUs): 3.5
Alternating Low Flow Sills/Baffles: Sills were used baffles were not.
Culvert/Stream Alignment
Stream Patterns Upstream and Downstream At the culvert outlet, the stream turns sharply to the right. Additional bank protection in the form of riprap has been added.
of the Culvert that Could Affect Fish
Passage and Bank Stability:
Bed Forms Impacted by Culvert (riffles, The stream does not have a strongly developed riffle-pool system near the roadway crossing.
pools, glides, etc.):
Low Flow Floodplain Bench Required? Yes
(provide justification)
Sharp Bends at Inlet/Outlet? Yes At the culvert outlet, the stream turns sharply to the right. Additional bank protection in the form of riprap has been added.
(describe culvert alignment with stream)
Stream Realignment Necessary? (provide
justification)
Bank Stabilization: In addition to rip rap, the cuilvert system was designed with the primary barrel on the inside of the bend of the stream to reduce stress on the
outside bank.
Outlet Velocities
Natural Stream Channel 2-yr Velocity (ft/s): 4.4 Natural Stream Channel 10-yr Velocity (ft/s): 5.4
Proposed Culvert 2-yr Outlet Velocity (ft/s): 3.6 Proposed Culvert 10-yr Outlet Velocity (ft/s): 4.2
Roadway Geometric Considerations
Evaluate/Describe Roadway Geometric Constraints:
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NC GRID
NAD B3/NSRS 2007
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B U1�lCOMBE CO U1�lTY
LOCATI0IV: BRIDGE 111O.100541 OVER GLADE CREEK
0111 SR 2788 (CROOKED CREEK ROAD)
TYPE OF WORK: GRADING, DRAINAGE, PAVING, AND STRUCTURE
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BEGIIV PROJECT 17BP.13.R.110
-L- STA.10 + 85.00
BEGIN CULVERT
-L- STA. 12 + 31.63
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Clearing on this project shall be performed to ihe limits established by modified method II.
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END CULVERT
-L- STA. 12 + 65.08
PERMIT DRAWING
SHEET 1 OF 4
E1VD PROJECT I7BP.13.R.I10
-Ir STA.14 + 00.00
PERMIT DRAWINGS SUBMITTAL
5-177
NOVEMBER 18, 2015
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CopyrlghT � 2006 V p & �I��+oi�.lnv. AIIRIgM1ts Reserved
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Prepare0 /n ti� Offlce of: HI'DRAULICS ENGINEER DIVISION OF HIGHWAYS
GRAPHIC SCALES DESIGN DATA PROJECT LENGTH VAUGHN F� MELTON STATE OF NORTH CAROLINA
]378-F PATTON AVE.
LENGTH ROADWAY PROIECT 17BP.13.R.110 = 0.054 MI nsxEvrLCE xc, 28806
20 10 0 20 40 ADT 2013 = 310 FOR THE NORTH CAROLINA DIVISION OF HIGIiWAYS ��� �°'�8�y�
LENGTH STRUCTURE PROJECT 176P.13.R.110 = 0.006 MI zoiz sraNnarzn snEc�Frcazioxs ��`6 ���
PLANS T= 6%* TOTAL LENGTH OF PROJECT 17BP.13.R.110 = 0.060 MI MICHAEL CALHOUN, PE P'E' � �I
SIGNATURE:
20 t0 0 20 40 V = 35 MPH RIGHT OF WAY DATE: PRolEcr Exc�NEER ROADWAY DESIGN �� ���a I
MAY 21, 2013 REECE SCHULER, PE ENGINEER �� ����
PROFILE (HORIZONTAL) *TTST=3% DUAL=3% eeo�EcrnEs,cxENcrNEsx '���
4 2 0 4 8 LETTl1VG DATE:
NCDOT CONTACT:
FUNCT. CLA55=RURAL LOCAL MAY 21, 2013 VIRGINIA MABRY
PROFILE (VERTICAL) SUB-REGIONAL TIER r.E.
MANAGER - PRIORlTY PROJECTS UN/T
SIGNAT[7RE: