20210209 Ver 2_Haywood County - B237 - Hydro Report_20211102

SPREAD ANALYSIS
NO DECK DRAINS REQUIREDFloodwayWithFloodwayWithoutNormal Water Surface Elev.BRIDGE SURVEY & HYDRAULIC DESIGN REPORTProject No.CountyOn HighwayBetweenandBridge OverRecommended StructureRecommended Width of RoadwaySkewBench Mark isElev.Datum:Temporary CrossingDateData on Existing Structurec.f.s.FrequencyGage Station No.ChannelRight O.B.Hydraulic Design MethodChannel SlopeHydrological MethodFreq.QElev.BackwaterBridge Opening VelocityFrequencyDischargeElev.Elev.Elev.FrequencyI.D. No.Proj. StationCharacterFlood Study / StatusData on Structures Up and Down StreamBridge Inv. No.Computed Scour :ContractionLocalLeft O.B.Project EngineerDateFloods Evaluated:c.f.s.RALEIGH, N. C.DIVISION OF HIGHWAYSHYDRAULICS UNITN. C. DEPARTMENT OF TRANSPORTATIONDesigned by::Period of RecordsMax. DischargeBase FloodDischargeOvertoppingDesign DischargeFrequencySourceSourceContractionHistorical Scour Info. ::::DateElev.Est. Freq.SourcePeriod ofKnowledgeDateElev.Est. Freq.SourceKnowledgePeriod ofDateElev.Est. Freq.SourceKnowledgePeriod ofGeneralLocalIs a Floodway Revision Required?Assisted by:I.D. No.Project No.StreamStruc. Inv. No.Average Channel Velocity (Design)Average Overbank Velocity (Design)Stream Classification (Such as Trout, High Quality Water, etc.)Design Control Elev.Reviewed by:Waterway Opening Provided Below:Design W.S. Elev.Recommended Location is ( Up, At, Down) Stream from Existing Crossing.Debris Potential:LowModerateHighDrainage AreaSourceRiver BasinPDF FileDESIGN DATAHistorical Flood Information:SITE DATAADDITIONAL INFORMATION AND COMPUTATIONSINFORMATION TO BE SHOWN ON PLANSft.ft.yrs.ft.ft.ft.yr.yr.yr.yrs.yrs.yrs.ft.ft.ft.ft/ftft.Manning's n:Flood Study 100yr. Dischargeft.ft.(yr.)100yr W.S. Elev.Totalft.ft.ft.100s.f.(f.p.s.)(ft.)(ft.)(c.f.s)s.f.,s.f.,s.f.,f.p.s.c.f.s.c.f.s.c.f.s.f.p.s.Floodway Established?yr.yr.yr.ft.ft.ft.Total Waterway OpeningWaterway Opening Below 100yr. WS EL.s.f.WS Elev.:Statewide TierRegional TierSub-Regional TierLatitudeLongitude434 Fayetteville Street Suite 1500Raleigh, NC 27601 - 919.836.4040LICENSE NO. F-0891www.wspgroup.com301@ River StationWS EL. Taken @ River Station 30125yr.100yr.
FREQUENCY
PROPOSED
NATURAL
500yr.
EXISTING
10yr.
PERFORMANCE TABLE
NCDOTTotal
3130.7
3129.0
3128.9
3131.3
3129.7
3129.6 3130.7
3131.7
3130.7
3131.8
3133.6
3131.8
SPREAD= 2.3 FT.
SHOULDER WIDTH= 2.33 FT.
CROSS SLOPE= 0.02 ft/ft
LONGITUDINAL SLOPE= 0.048 ft/ft
Q= 0.11 cfs
C= 0.9
I= 4 in/hr
DA= 0.03 ac
43.3.3 FT. FROM THE US FACE OF BRIDGE
@ RS 294 NORTHCAROLINAPROFESSIONALENGINEER043232SEALIDYMOHANDASVACANOP
YT
ROCK
PILE
ROCK
PILE
ROCK
WALL
ROCK
15" CMP
15" CMP
EXISTING R/W
EXISTING R/W
EIP
NAIL
EIP
EIP
R
/R
S
P
IKE
SPLIT RAIL
REC. CENTER1 S F
TENT SITES
INV=3144.23'
INV=3144.98'
15"
C
MP INV
=
3
10
9
.17'
24" CMP
COLUMNSCONC
SOIL
SIGN
SIGN
SIGN
SIGN
SIGN
SIGN
SPLIT RAIL
SIGN
ROCK
2
5
6
7
9
11
DB 570 PG 1705
CRISTINE MARSHALL
POND
SOIL
SOILDB 702 PG 1887
JULIO DELANOY, ET AL PRIVATE R/W8" PVC
8" PVC
SIGN
SORRELLS CREEK
SORRELLS CREEK
LITTLE E
AST F
O
R
K PI
GE
O
N
RI
VE
R
LITTLE EAST FORK RD.
SR 1129 18' BST
2 BL-2 623851.7506 838556.8134 3112.33 18+15.81 13.40 LT
1 BL-1 623629.7926 838744.4744 3129.47 15+29.40 16.11 RT
G100 GPS-100 623148.4570 838992.9520 3162.17 OUTSIDE PROJECT LIMITS
------------ ---------------- ---------------- ---------------- ---------------- ---------------- ----------------
POINT DESC. NORTH EAST ELEVATION EL STATION OFFSET
BL
3158.84'
O/H WIRE ELEV.
GPS-100 45.00'
0.
5
6'45.00'EXISTING R/W
EXISTING R/W
INV=3114.61'
INV=3116.23'
INV=3125.43'
INTAKE
INV=3125.64'
INV=3127.76'
-EL-
ROCK
SILO
C
C
C
C F
C
F
F
CF
F
F
F
C
C
C
C
C
C
C
C
C
C C
F
C
C
C
F
C F
C
C
CCFC10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 19+00 20+00
3,150
3,140
3,130
3,120
3,110
(PGL)
GRADE
PROPOSED17BP.14.R.177430237SORRELL CREEKHAYWOOD(SR 1129)LITTLE EAST FORK RD(SR 1111)LAKE LOGAN RD(SR 1240)SCHOOL HOUSE BRANCH RD60AT EXISTING CROSSING43023717BP.14.R.177XNONEN/AN/AN/AN/AQ500Q100Q25Q10----------707030--NOWS-III, TROUTFRENCH BROAD2.5 SQ MISINGLE SPAN, 1 @ 25'-6". TIMBER FLOOR, END BENTS, CAPS, POST & SILLSSTEEL I BEAMSDESIGN FOLLOWS SUB REGIONAL TIER GUIDELINES- L -FLOWDs = 30 MPH
VC = 180'
EL = 3,110.78'
PI = 18+35.00
PROPOSED PROFILE
VC = 200'
EL = 3,124.40'
PI = 16+45.00
PROPOSED PROFILE
Ds = 45 MPH
VC = 160'
EL = 3.136.99'
PROPOSED PROFILE
Ds = 55 MPH
K = 123
VC = 150'
EL = 3,150.02
PI = 11+83.00
PROPOSED PROFILE
K = 39K = 83
DS = 45 MPH
PI = 13+80.00
K = 86
PROFILE
PLANSTAGED CONSTRUCTION3137.70NAVD 88SORRELL CREEK430237 2018 SF-430237 SORRELL CR. SR1129.PDFSF-430237VIDYA MOHANDAS, PERANA STANSELL, PR, CFMSF-43023715+00 -L-BM#1: SPIKE IN BASE OF 18" OAK @ N 623576 E 838815 AT STA 14+51 -L- 58' RTSTREAMSTATS / QUAD MAP WAYNESVILLE MOUNTAINS / REGION 23131.3BETTY LANECAMERON BAKERDRAINAGE AREA = 2.5 SQ. MI.-82.89782935.400729550750110015003129.03129.73130.73131.80.10.10.00.05.09.08.88.6N/AN/AN/AN/A25100+-750110011003129.73130.73128.010.3LIDAR0.050.050.0450.06 / 0.1FIELD SURVEYNOT IN A STUDY (04/03/2012)HEC RAS V4.1.0 / SorrellCreek.prj20043128+/-SIR 2009 - 5158 & USGS RURAL REGRESSION136136WEIR FLOW AREA = 35 SQ. FT. (100 yr PROPOSED)WEIR FLOW AREA = 129 SQ. FT. (100 yr EXISTING)0.0ABUTMENT SCOUR: 100yr. (NCHRP 24-20 EQUATION)Y0 = 2.27 FTY1 = 3.37 FT ] 6/7)1/q2C(q1=[YCYa = 1.2a)= 1.2 * 2.43 = 2.91 FTC(Y=MAXY0.6q1 = Q/TW = 1100 / 31.23= 35.22 SQ. FT / Sq2c = Qb / BW = 962.33 / 40.06 = 24.02 SQ. FT / SHISTORICAL FLOOD INFORMATION - BETTY LANE, LOCAL RESIDENT, HAS LIVED IN THE AREA FOR 30 YEARS.BRIDGE DOES NOT TYPICALLY OVERTOP. TYPICAL HIGHEST WSE NOTICED IS ABOUT ONE TO TWO FEET BELOW THE LOW CHORD OF BRIDGE DURING A TYPICAL STORM. THE BRIDGE HAS NEVER OVERTOPPED. 3124.70
ELEV. 3131.3'
21" CORED SLAB
1 @ 50'
STA. 15+00-L-
EXISTING GRADE
NG LT
NG RT
LOW SIDE LOW STEEL
EST. 75 CY
EXCAVATE TO EL. 3127.0'
4'0" ABUTMENT CAP
EST. 100 CY
EXCAVATE TO EL. 3125'
REMOVE EXISTING BRIDGE
E: 838815
N: 623576
EL. = 3137.70'
-BL- STA. 14+51' 58' RT
BM-1
BY THE WSEL DUE TO THIS PROJECT
NO STRUCTURES WILL BE ADVERSELY AFFECTED
SILTY SAND MATERIAL
BED MATERIAL: ROCKY WITH SOME
TOP OF BANK (TYP)
SPECIAL CUT DITCH
SPECIAL CUT DITCH
SPECIAL CUT DITCH
CLASS B RIPRAP
LINE w/ CLASS A RIPRAP
RIPRAP
LINE w/CLASS A 24'-10" CLEAR WIDTH= 564 CFS, SAY 550 CFS0.736 = 288 (DA)10Q= 771 CFS, SAY 750 CFS0.724 = 398 (DA)25Q= 1100 CFS, SAY 1100 CFS0.713 = 575 (DA)100Q= 1510 CFS, SAY 1500 CFS0.704 = 794 (DA)500QBRIDGE TYPICAL SECTION
0.02 FT/FT 0.02 FT/FT
CL
GRADE
POINT
9 SLABS @ 3'-0" = 27'
12'-5"12'-5"
C1 C1
24'-10"
2.75"5.75"
LIMITS OF EXCAVATION (TYP)11/13/2018USGS DISCHARGES FOR HYDROLOGIC REGION 2 - RURAL BLUE RIDGE, SIR 2009-5158CLASS I RIPRAP
THEORETICAL 100yr SCOUR
CLASS II RIP-RAP (TYP)
LOW CHORD0 N/AN/AN/ASINGLE SPAN @ 50', 21" CORED SLAB WITH 4' CAPS AND VERTICAL ABUTMENT PROTECTIONCLASS II RIPRAPUS: UNNUMBERED 16' STEEL BRIDGE ON I-BEAMS ON SORRELLS [3.37aaa=2.91 - 2.27 = 0.64 FT.S YO-YMAX=YSY]6/7(24.02 / 35.22))=1.2C(Y=MAXY ] 6/7)1/q2C(q1[Y)=C(Y=MAXYEXISTING LEVEL OF SERVICE(COR. EFF. 25-YR WSE @ RS 294) MAINTAIN OR IMPROVE <10CREEK RD 0.3 MILES US DS: BR# 430091 ON SR 1129; 1@73' PRESTRESSED CONCRETE BOX BEAM WITH REINFORCED CONCRETE/ DRILED SHAFT FOOTINGS 0.2 MILES DS92 AT DRIVEWAY@ STA. 15+77 -L-15+42 TO 16+05 -L- LT
PROP SBG
RIPRAP
CLASS B SLOPE PROTECTION
CLASS II RIPRAP
REMOVE
GRADE TO DRAIN
AND EARTHEN DAM
8" PVC PIPE
REMOVE INTAKE,
500 CU YD
TO EL 3120'
EXCAVATE AND GRADE101510
10
9.1'9.1'.005.013.01.03.01.02.0322'.03.00.03.02.01.03.02.01.00.01.02.04.03.02.01.00.01.0216'EXIST10'10'10'
15'+83.02.02.01+26.316'+0316'+7825YR WSEL=3129.7'100YR WSEL=3130.7'
NORMAL WSEL=3124.7'
2.0'2:15.0'
3.0'3.0'
15"
15"
18"
R
C
P-I
V
TB 2GI
15" RCP-III
GRADE TO DRAIN
GRADE TO DRAIN
DRAIN
GRADE TO 15"
FLOWABLE FILL
GRADE TO DRAIN
24" RCP-IV