NCDOT 187-07 OVERSIZE PLANS

INFORMATION TO BE SHOWN ON PLANS
SITE DATA
NEUSE RIVER BASIN
DHSS/JASPER NC QUAD Character RURAL -COASTAL PLAIN
3 OQO ---- - Elev,------13.4----------------
Design: Discharge -------- - 9_______________ c.f.s. Frequency ____ 50 r-___
Base Flood: Discharge ________3 600______ ------ c.f.s. Frequency --- -10Q yr------ Elev- ------ 14-2-----------------
_s____
overtopping: Discharge -------- 5,400--------- c.f.s. Frequency .____500\/r---------- Elev. ------ j5.31---------------
(DOES NOT OVERTOP)
ADDITIONAL INFORMATION AND COMPUTATIONS
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10 0--Y r--C O U T R A C T_I O N-- SCOUR --------(L I V E)-------------------------------------------------------------------------
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Y-- [ (01 / 01---)-- -( ,--- / VUz - - -- - --- ------ - ---- - - -- -- - - --- -- - - - -- ------ - - ---
_ - Yo
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---Y 5---------- 2----------- - - --------------oil-------------------f1m64
--- '-- - - 2676.58,% 2784_lO � ------ ! ---- -- 42.50]--------------------- - - --- -
Y2 = 17.91' ------------------------
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-- ----17 0 -1-----11. 7 5------------------------------------
---Y -- = -- 0 -- ------------------------- ----------- -- - - - -- ----
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500 yr, CONTRACTION SCOUR.- (L1VE)
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-Y _S__--- -l-- Y2- -- Y o-------------- 6/7 ---
--- - 0.64 --
--- Y2- - --12 � 0 6 E387i_50 /3423.34 ]-- ----- ------ j42.50 -- -----------------------------------------------------------------------------
Y2= 2 4 ®8 5 ` -------------------------------------------------
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dd 11 >>{ .65 .35 .43
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43
YSs'. 2.0 (1.0) (1.0) (1.1 ) 0-0) (5.0) ( 15.84� (0<31� --------------------------------------------
--- Y s =---1 .1 21-----------------------------------------------------------------------------------------------------------------------------------
Drainage Area 37 Sq.m1 _---- Source - --- -------------- '----------------- ------ - - ----- -
CLASS C, SWAMP WATERS¢
Stream Classification (Such as Trout. High Quality Water. etc.).______NL1JB1ENT__SENSILIYE_WAT_E€ -------
ANADROMOUS FISH SPAWNING AREA
Data on Existing Structure _TR _ 21'=6P_2�2Q�p_j� -2l' -6. RC__ELOOR/CONTINUOUS _I_ BEAMS ______________
653.0 sf BELOW 56yr. WS EL.
END BENTS & INTERIOR BENTS: TIMBER PILES &_ CAPS ______________ waterway opening TOTAL.= _SS3,0 sf
Debris Potential: Low-__ x___ Moderate ---------- High .e______
Data on Structures Up and Down Stream-UP_STF2EAM:_I@l6'�I�fS'!_1�14'-10,_I@14'-11,_1�15'-10__________________
TIMBER__FLOOR,_TIMBER__PILES/CAPS.__DOWN_ STREAM__2rr31'-3. RC_ DECK_ GIRDERS&WIDENEQIPPC_ PILES.
ABUTS:_FULL__HEIGHT_ CONC=_IBTS:_RN__POST&WEB---------------------------------------------------------------------------------
Design Control Elev. _I5.5' tl' ABOVE_ EXISTING IOOyr APPROACH ELEVATION)
Gage Station No. N/A ________-- Period of Records ----------------N/A _------------------------------
Max. Discharge N/A -------------- c.f.s. Date ----------N/A------------- Frequency---------N/A----------
Historical Flood Information:
Period of
Date --------------- Elev ------------- Est. Freq.._-___-__- Source KEN MASON- HWY MAINT. ENG. Kn !ledge_________
ROAD NEVER CLOSED DUE TES -FEO D iod of
Date ______________ Elev ------------- Est. Freq.._________SourceMIKENEQ4RY0VERORO \I BRG P1ERKnowledge2Q+___yr•
Period of
Dote _09%K_- Elev ------------- Est.Freq----------- Source JUDY_WHITE LOCALRESIDENT_ Knowiedge20+__Yr-
OVER ROAb/DfO DUINO HUIZRtCAN 'ELOYD°
Historical Scour Info. : General ------ NZA------- Contraction --------- N/A_--------------- Local _________ N/A_____________
Channel Slope O _Q004 ft/ft Source ............QUAD_________________ Normal water Surface Elev. ____7.4�_+/ _
Manning's n Left O.B. ----- Channel __4_ Q6 __ Right O.B. __0.2---- Source _FIELD _OBSERVATION
Flood Study / Status ---------- IN__F.H.Z./NO.OETAILED__STUDY................... Floodway Established? NSA_
Flood Study 100 yr. Discharge ---- N/A .... c.f.s.; W.S. Elev.: With Floodway__N/A__- Without Floodway, --- N/A___
DESIGN DATA
USGSREGRESSION ---------------------------------------------------
HydrologicalMethod ----------------------------------------------------------------------------
Hydraulic Design Method --------- HEC =RAS__ 3.Io2--------------------------- -----------------------------------------------------------
HEC-RAS SECTION 750
Floods Evaluated: Freq. Q Elev. Backwater Bridge Opening Velocity
IOyr- --- - --1,700-- --- - --- 11.5' - -- -----0.3'---------- -3.0 f/s------
---- 25yr------ -------2,400 ----------- 12.6--------- - 0.5' ---- ------ 3.5__ f /s ------
5OYr-------------3,000------------13•4- -- - - --0.6' - - --- -4.0 f/s --
LOQyr__---- ------ M00------------- 14.2-------- --- 0.8'---- ------ 4.5_-_f/s--------
1.51
-------j6°3 -------------- -----------6•a-- - /s ------
waterway Opening Provided Below: Design W.S. Elev- ______ 774__ Sf---------- IOOyr W.S. Elev. ------- $3� _ of _________
2 5 f/S Average Overbonk Velocity (Design)_____ 0.2 f- -/S ____
Average Channel Velocity (Design) ---_-f_______________ g -
Computed Scour General -------------"- 5Contraction _I9d�00'r== __�:2'____ Local _-I_QQy_r,___SsQ' _--_____
yr.- 12.2' 500yr.- 10.0'
Is a Floodway Revision Required? ------------ NO----- .-------------------------------------------------------------
BRIDGE SURVEY & HYDRAULIC DESIGN REPORT
N. C. DEPARTMENT OF TRANSPORTATION
DIVISION OF HIGHWAYS
HYDRAULICS UNIT
RALEIGH, N. C.
LD. No. ____8-4085------- Project No._______33444,1.1__________________ Proj. Station __STA. 12+42.5__-L-____-___
County __-_-__-CCRAVEN ------------- Bridge over _-___BACHELOR _CREEK_-________________ Bridge Inv. No. ____ 2I2______
On Highway ----- SR _ 1005---------------- Between -------- SR _ 1244-------- and --------------- NG----`--- ---------------------
Recommended Structure T�__ 30`, 1�55, I-- 30`, 21' CORED_ SLAB
- ------------------------------------------------------------------------------------------
Recommended Width of Roadwa BRIDGE CLEAR RDWY. 33' SKew .-_______94°_______________
y-------------------------- - - - - - -
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} Recommended Location is (Up. At Down) Stream from Existing Crossing_ ______________________________________________
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m a Nearest Shipping Point ___NEW______BERN________+_____NC__ On NCRR✓NQRFOLK_ SOUTH___ NR.R.,+,(_-__ 9 Miles From Bridge
a Bench Mark is --- RR SPIKE__IN BASE OF 30' PINE, STA._I6+57-L_,_84'_LT------------ _______________________________
CO
Elev. 29 67' Datum: ___ NAVD8$______-__
m Temporary Crossing ___________ NONE REQUIRED ------------------
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Designed t
Assisted I
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Reviewed by: ----------
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