The URL can be used to link to this page

Home My WebLink About20160672 Ver 1_SF-670126 Buffer Permit Package 022416 FINAL_20160707k 11�;11�� <14' North Carolina Department of Transportation SL[?1'llitYcl�PP � Highway Stormwater Program �. STORMWATER MANAGEMENT PLAN (Version 2.02; Released April 2015) FOR NCDOT PROJECTS WBS Element: 17BP.7.R.69 TIP No.: County(ies): Orange Page 1 of 2 General Project Information WBS Element: 17BP.7.R.69 TIP Number: Project Type: Bridge Replacement Date: 1/12/2016 NCDOT Contact: Galen Cail Contractor I Designer: Address: Hydraulics Units Address: 1020 Birch Ridge Drive Ralei h, NC 27610 Phone: 919-707-6711 Phone: Email: cail ncdot. ov Email: Cit ITown: Count ies): Oran e River Basin s: Neuse CAMA Count ? No Wetlands within Project Limits? No Pro'ect Descri tion Pro'ect Len th lin. miles or feet : 500 ft Surrounding Land Use: Rural, agricultural Pro osed Pro'ect Existin Site Pro'ect Built-Upon Area ac. 0.2 ac. 0.2 ac. Typical Cross Section Description: 2 lane road with 10' travel lanes, 4' grassed shoulder without guardrail, and 7' grassed 2 lane road with 10' lanes, shoulder with guardrail. Annual Avg Daily Traffic (veh/hr/day): Desi n/Future: Year: Existin : Year: General Project Narrative: The project consists of replacement of Bridge 126 on SR 1526 (Gray Rd) over Lick Creek and associated roadway work. The existing structure is a three span (1 @ 25', 2@ (Description of Minimization of Water 26') timber deck on i-beams bridge. The proposed structure will be a 4-sided 34'-11"x10'-4" aluminum box culvert. All project drainage will tie to existing, established outfalls. Quality Impacts) Outfalls within project limits are stable. Waterbody Information Surface Water Body (1): Lick Creek NCDWR Stream Index No.: NCDWR Surface Water Classification for Water Body Primary Classification: Water Supply III (WS-III) Supplemental Classification: Nutrient Sensitive Waters (NSW) Other Stream Classification: Impairments: Aquatic T&E Species? Comments: NRTR Stream ID: Buffer Rules in Effect: Neuse 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 � � :�iiUl`1]�1�1i�t1t('C I „�- .- Highway Stormwater Program �;' STORMWATER MANAGEMENT PLAN —'�� (Version 2.02; Released April 2015) FOR NCDOT PROJECTS WBS Element: 17BP.7.R.69 TIP No.: County(ies): Orange Page 2 of 2 Bridge to Culvert Avoidance and Minimization Proposed Structure Summary Sheet No. & Station Sheet No.: 4 Station: L 13+75 Number of Culverts: 1 Drainage Area (ac or sq mi): 3.5 sq miles Culvert Width/Diameter (ft : 34'-11" Surface Water Body: Lick Creek Culvert Height (ft): 10'-4" Culvert T e: 4 sided aluminum box culvert Culvert Length ft 102 Avoidance and Minimization Efforts: The proposed culvert slope is consistent with the existing stream slope. Sills and BafFles with a low flow notch are proposed to mimic the low flow (Bridge to Culvert) channel dimension along the stream. Low flow velocities through the culvert are consistent with the stream natural channel low flow velocities. Proposed culvert will buried, sills placed at inlet and outlet and a baffle in the middle of the box to retain bed material. Stream Slope Fish and/or Aquatic Life Passage Existing Average Stream Slope (°/a): 0.50 % Existing Low Flow Channel Dimensions Approx. 15 ft Proposed Culvert Slope (%): 0.45 % in the Stream: Culvert Burial Proposed Culvert Burial Depth (ft): 1 ft. Existing Streambed Material: cobbles and rock Proposed Low Flow Dimensions 15 ft Through the Culvert: Proposed Sills/Baffles: Sills at both US and DS ends, and baffle at the midpoint of the structure. The sill ht is 1.5' with a 0.5' Existing Low Flow Velocities in the low flow notch.s Stream (ft/s): 5.1 ropose ow ow e oci ies roug the Culvert (fUs): 5.1 Alternating Low Flow Sills/Baffles: No. Existing stream at center of proposed box is approximately in center of box. Culvert/Stream Alignment Stream Patterns Upstream and Downstream Stream typical straight with some gradual meanders. of the Culvert that Could Affect Fish Passage and Bank Stability: Bed Forms Impacted by Culvert (riffles, Culvert looks to be in a riffle/glide with a pool near the outlet. pools, glides, etc.): Low Flow Floodplain Bench Required? Yes Benches up and downstream to transition box and low flow channel to existing stream top of banks. (provide justification) Sharp Bends at Inlet/Outlet? No (describe culvert alignment with stream) Stream Realignment Necessary? (provide No justification) Bank Stabilization: Class I Rip Rap on banks at inlet and outlet. Existing banks are moderately stable. Outlet Velocities Natural Stream Channel 2-yr Velocity (ft/s): 2.6 Natural Stream Channel 10-yr Velocity (ft/s): 5.1 Proposed Culvert 2-yr Outlet Velocity (ft/s): 2.8 Proposed Culvert 10-yr Outlet Velocity (ft/s): 5.1 Roadway Geometric Considerations Evaluate/Describe Roadway Geometric Constraints: Existing bent and footer in stream to be removed. � � • � � V � � O V �� 1l � ��d. �Y � ��v �� o��GE coU�TY LOCATION: BRIDGE NO. 126 OVER LICK CREEK ON SR 1526 (GRAY ROAD) TYPE OF WORK: GRADING, PAVING, DRAINAGE AND CULVERT BUFFER IMPACTS PERMIT �ITC "1 STATE STATE PRoIECY RNFP.RENCE NO. SHB�ET TOTAL SHBETS A�Va`l�a �O LJIll 00 a�a�ll� �. BUFFER DRAWING SHEET 1 OF 4 To BERR pRY p DESIGN DATA ADT 2015 = 306 V = 55 MPH SUB REGIONAL TIER LOCAL � -L- S1o.14+00.98 i� y PROJECT LENGTH LENGTH ROADWAY TIP PROJECT = 0.085 MILES LENGTH STRUCTURE TIP PROJECT = TOTAL LENGTH TIP PROJECT = 0.010 MILES 0.095 MILES Prepored ln ihe Offfce of Hatch Mott MocDawld for DIVISIOIV 7 2012 STANDARD SPEC/FICATIONS LETTING DATE: NCDOT CONTACT: TIM JORDAN, PE PROfECT ENGINEER GALEN CAIL, PE mnrsnuur,s Excrxeex TIM POWERS, PE DIVIS/ON BRIDGE PROGRAA-I MANAGEN � GANS PREPARED BY: � Hatch Mott �� MacDonald PO � .. )0 �,r ii Fuquay-Varina.'VC 275z6 �9i9� ssz-zzs� �9i9� ssz-�z�n �F�X� www.hatcomo;tcom LICENSE NO. F-0669 ALLOWABLE IMPACTS ZONE 1 ALLOWABLE IMPACTS ZONE 2 ----------F � �� ------ � titi i � � �_ �� M��—�-z�,�� 1 1 � � � � � � . � � �� -�� •�-� • • • � � • • � • • • '• • '• :' � �' - _ _____- a . :. _ � :. : , , . , . . , �� . . :.: , ,. , . - . �� Rev. May 2006