20210553 Ver 1_U-5896 Final Permit Drawings_20211011

(Version 2.08; Released April 2018)44674.1.2TIP No.:U-5896County(ies):Guilford Page 1 of 2TIP Number:Date:Phone:Phone:Email:Email:County(ies):CAMA County?YesDesign/Future:Year:2040Existing:Year:Aquatic T&E Species?NoComments:NoN/AN/AWetlands within Project Limits?Critical Supply Watershed Supplemental Classification: Forest, grassy median, residentialRichland Creek17-7-(0.5)11.50.72Project DescriptionProposed ProjectCape FearRiver Basin(s): City/Town:13.6Typical Cross Section Description: Surrounding Land Use: General Project Narrative:(Description of Minimization of Water Quality Impacts)[e-mail]:12/11/2019GuilfordHigh PointBryan KeyRaleigh, NC 27610WBS Element:Bridge ReplacementWBS Element:VHB/ Reid Robol, PENCDOT Contact:[phone]Suite 500Raleigh, NC 27606Contractor / Designer:(919) 829-0328940 Main Campus DrNorth Carolina Department of TransportationHighway Stormwater Program STORMWATER MANAGEMENT PLAN FOR NCDOT PROJECTSProject Type:1000 Birch Ridge DrAddress:General Project InformationU-589644674.1.2Impairments:Other Stream Classification: Primary Classification: Project Built-Upon Area (ac.)Project U-5896 involves the reconstruction of an interchange at I-85BUS/US 29/US 70 and S Main Street/BUS 311 near High Point. This project is located in the Randleman Lake watershed and is buffered according to the rules of that watershed. A retaining wall has been used to limit erosion and disturbance to Richland Creek. Existing erosion was noted and rock plating was used to minimize further erosion of the stream banks and to aid in the stability of the proposed retaining wall in areas from 10+50 to 14+00 -L- LT. Typical sections at the start of the -Y- line were adjusted to minimize impacts to Richland Creek. 2:1 side slopes were used where possible to limit permanent fill impacts to jurisdictional features. Erosion Control devices such as preformed scour holes, stilling basins, special stilling basins, silt fence, special sediment control fence, rock inlet sediment traps, pipe inlet sediment traps, and slope drains will be utilized to contain and minimize sedimentation. Additional avoidance and minimization efforts are attached.Randleman LakeBuffer Rules in Effect:38070-L- line: 4x12' lanes, 10' paved median w/ 2' barrier, 18' paved shoulders-Y- line: 4x12' lanes, 10' paved median w/ 2' barrier, 12' paved shouldersWaterbody Information2020NCDWR Stream Index No.:NRTR Stream ID:Annual Avg Daily Traffic (veh/hr/day):Existing SiteProject Length (lin. miles or feet): ac.Surface Water Body (1): Water Supply IV (WS-IV)NCDWR Surface Water Classification for Water Bodyac.-L- line: 4x11-12' lanes w/ grassy median-Y- line: 4x11-12' lanes w/ grassy [e-mail] Includes Bridge Spanning Water Body?Deck Drains Discharge Over Buffer?Dissipator Pads Provided in Buffer?N/ADeck 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 General Project Narrative)(If yes, provide justification in the General Project Narrative)
(Version 2.08; Released April 2018)44674.1.2TIP No.:U-5896County(ies):Guilford Page 2 of 2Sheet No.Station & Coordinates (Road and Non Road Projects)Surface Water Body Riprap TypeDrainage Area(ac)Conveyance Structure-L- 9+25 Rt.-L- 21+00 Rt.Preformed Scour Holes and Energy DissipatorsYes1.8Pipe 157.310.5WBS Element:Class 'B'5(1)Richland Creek(1)Richland Creek4Highway Stormwater ProgramAdditional CommentsNorth Carolina Department of TransportationPSH 0.4V10(fps)Energy Dissipator TypePSHSTORMWATER MANAGEMENT PLANFOR NCDOT PROJECTSBMP Associated w/ Buffer Rules?Pipe0.7Class 'B'Q10(cfs)Pipe/Structure Dimensions(in)3.4 Yes15* Refer to the NCDOT Best Management Practices Toolbox (2014), NCDOT Standards, the Federal Highway Administration (FHWA) Hydraulic Engineering Circular No. 14 (HEC-14), Third Edition, Hydraulic Design of Energy Dissipators for Culverts and Channels (July 2006), as applicable, for design guidance and criteria.
U‐5896 Avoidance and Minimization Effort Description 
SMP General Narrative Attachment 
10/28/2020 
Due to the proximity of Richland Creek to the existing US-29-70/I-85 BUS, the originally
proposed typical for the interchange improvements pushed slope stake lines into
Richland Creek and would have created significant relocation and impact to Richland
Creek. A retaining wall from -L- STA. 10+00 to STA. 15+50 was designed in order to
minimize impacts and prevent relocation of Richland Creek.
The location of the proposed retaining wall and the existing conditions of Richland
Creek’s bank in this location raised erosion and stability concerns if left as bare soil. It
was determined through coordination with multiple disciplines that rock plating should
be utilized to stabilize the bank of Richland Creek and to protect the stream bank,
retaining wall, and roadway. Stabilizing the existing bank with rock plating should reduce
existing bank erosion and sedimentation downstream.
The existing 5’x6’ RCBC crossing has a scour hole at the outfall in Richland Creek likely
due to the existing crossing being undersized. A supplemental 48” Welded Steel pipe has
been proposed to reduce crossing outlet velocities which will help reduce scour of
Richland Creek. Class II Rip Rap is proposed in our current design in order to bring the
current scour hole up to the natural Richland Creek bed elevation and protect Richland
Creek from further scouring. The existing 5’x6’ RCBC is also being retained in order to
minimize impacts to the UT to Richland Creek and Richland Creek itself.
o It was considered to replace the existing 5’x6’ with an upsized crossing, however
due to the existing site conditions and necessary crossing relocation for
constructability, it was likely to create additional impacts to JS features and
deemed not appropriate.
o It was considered to not add the 48” supplemental pipe and maintain the existing
RCBC. However, due to anticipated future buildout of the upstream drainage
area, the undersized crossing, along with the current and future scour potential
downstream, it was determined a supplemental pipe would be beneficial.
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SHEET 1 OF 11 .c. U-5896
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GUILFORD COUNTY
LOCATION: INTERCHANGE AT US 29, US 70 AND S MAIN STREET (SR 1009 & US 311 BUSINESS), NEAR HIGH POINT
TYPE OF WORK: GRADING, PAVING, DRAINAGE, STRUCTURE, SIGNALS
SITE
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END CONSTRUCTION -Y-POC Sta. 25 + 80.00
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DESIGN DATA
ADT 2020 = 38,070
ADT 2040 = 42,700
K 10 %
D 60 %
T 9 % *
V 60 MPH
*TTST =4% DUAL =5%
FUNC CLASS =
PROJECT LENGTH
LENGTH OF ROADWAY TIP PROJECT U-5896
LENGTH OF STRUCTURE TIP PROJECT B-5353
TOTAL LENGTH TIP PROJECTS U-5896 & B-5353
0.683
0.034
0.717
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PLANS PREP/.RED FOR THE NCDOT BY:
2018 STANDARD SPECIFICATIONS TIM JORDAN. PE
PROJECT ENGINEER RIGHT OF WAY DATE:
MAY 31. 2019 JORDAN WOODARD, PE
PROJECT DESIGN ENGINEER
LETTING DATE:
FREEWAY AUGUST 18, 2020o...�U) '-,,J O 10 20
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HandExisting Existing Permanent Temp. Excavation Mechanized Clearing Permanent Temp. Channel Channel Natural SiteStationStructureFill In Fill In in Clearing in SW SW Impacts Impacts StreamNo. (From/To)Size / TypeWetlands Wetlands Wetlands in Wetlands Wetlands impacts impacts Permanent Temp. Design(ac) (ac) (ac) (ac) (ac) (ac) (ac) (ft) (ft) (ft)1 10+45 to 11+50 -L- LT Bank Stabilization0.01 0.01 101 1112 12+60 to 14+05 -L- LT Bank Stabilization0.03 0.01 103 732 12+60 to 14+05 -L- LT Scour Hole Stabilization0.02 < 0.01 40 233 10+91 to 11+44 -L- RTToe Protection< 0.01< 0.014 12+73 to 13+18 -L- RT Bank Stabilization< 0.01 < 0.01 40 164 13+13 to 13+23 -L- RTCulvert< 0.01215 13+19 to 14+47 -L- RTRip-rap Ditch0.021496 15+41 to 16+58 -RPB- LT 18" RCP, Roadway Fill 0.030.017 47+23 to 47+40 -L- LT Bank Stabilization< 0.01 < 0.01 4 15TOTALS*:0.030.020.09 0.04 458 238 0*Rounded totals are sum of actual impactsNOTES:Revised 2018 Feb SHEET 11OF 11Site 1 and Site 2 impacts are to Richland CreekSite 4 impacts are to feature SASite 5 impacts are to feature SWSite 6 - Total take of wetlandWETLAND AND SURACE WATER IMPACTS SUMMARYWETLAND IMPACTSSURFACE WATER IMPACTSGUILFORDU-589644674.1.2NC DEPARTMENT OF TRANSPORTATIONDIVISION OF HIGHWAYS8/20/2021