3. Boat Ramp Concept Plan 20151006CONCEPT PLAN
10I06/2015
C
I NOTE: SITE EROSION CONTROL WILL CONSIST OF FIBER ROLLS
ABOVE OHW. NO SILT CURTAIN WILL BE INSTALLED DUE TO
ITS INEFFECTIVENESS AT CONTROLLING SEDIMENT DISPERSAL
IN FLOWING WATER. SEE ATTACHED DETAIL FOR PROPOSED
EXCAVATION DEPTH FOR PLANK INSTALLATION.
GRAY_L EDGE,
I
1
I
• I
I `
\ 69
691.33 GRA
697.3
GROUND
v \
CONSIDER RE -GRADING UPPER �v
�I LANDING AREA TO SLOPE TO THE
I
NORTHWEST INTO A TEMPORARY
I \
2DDB4 SEDIMENT BASIN 1\
L D69E9C.ILINE\ \ 269GDR
DEno TREE UNE I I\
20082
RRR698.62
GRAVELEDGEI \
I 99.2.2E \
GRAVELEDGE
POTENTIAL PICNIC LOCATION WITH ROOM
FOR INTERPRETIVE HISTORICAL SIGNAGE
EDGE
ISLEd9P
20098
X 691.96
GRODNO
20.23
Y 69817
\ GRAVELED E
1 I
I
62oD91 I
X
.ROUND
20(
y( 698.5 - 2 024
CLRAVEL GE 6 A
]31 GRAVEVE
L EDGE
4E e21
❑D TREE un��R � e.
20029' -
1 6ss
6 EFL DG
maze 4m
697.85
GRAVEL EDG
REMOVE ONE 8"TREE TO ELIMINATE
LONG-TERM STABILIZATION ISSUES
DRAINTILE PIPE WITH STABILIZED OUTLET
STABILIZE ROADWAY BANKS WITH 18-36"
BOULDERS OVER GEOTEXTILE FABRIC;
SEED DISTURBED SLOPES WITH NATIVE
SEED MIX AND FIBER BLANKET
2-3" CLEAR AGGREGATE SPILLWAY TO
DISSIPATE FLOWS AND PREVENT EROSION
(32) 12' WIDE CONCRETE PLANKS;
SUPPLIED BY MN DNR; ANGLE RAMP
DOWNSTREAM 14° OF PERPENDICULAR
(SEE ATTACHED DNR STANDARD DETAIL)
DISTURBANCE AREA BELOW OHW -
616 SF
a e
Et DGe
24%
i
E
i
1 E
E
gM60P e
14
G A' EDGE
IR 55�/J 1
z 12'
LOGHOUSE LANDING
BOAT RAMP STABILIZATION
I
2%
cross -
slope
x
ST. CROIX RIVER
BUILD UP GRADE (APPROX. 6") TO DIRECT
WATER AWAY FROM TOP OF RAMP
&Mv_MI
I iVVLL LDGE
I /
I /
STABILIZE WASHED OUT FOOT
PATH WITH ROUGH CUT STONE STAIR
/ EROSION CONTROL
/ FIBER ROLL
1 X E80.080.05
EDGE OE WATER
V 1
1
1
�61p.5-MSL 1912)
TER GE20
OHW 680-MSL 1912�
20009
81.93
B /CLINN IG/95MSL 1912)
X �sn
N
6 4 8 16
mow
X 680Az
EDGE OF WATER B/RIVER
I
w a t e r
ecology
E(31community
50' (VARIES)
BITUMINOUS OR (A 50' RAMP REQUIRES 38 PLANKS)
AGGREGATE 5'
SURFACE AS START VERTICAL
SPECIFIED CURVE AT FOURTH
PLANK 4_1
PLANTnnnnnnnnnnnn
NO SCALE
4' WIDE IF NO
DOCK
IF BITUMINOUS,
THICKEN TO 6"
(3" LIFTS) AS
SHOWN
VERTICAL a
CURVE
TRANSITION
FOR RAMP
APPROACH;
GRADE FOR
50' NOT TO
FXCEED 10%
d
9
LILJLJUUUUUUL1UUL.;uuuU J-I.-
J4.
EDGE OF m - 2" — 2-1 /2"
GEOTEXTILE WATERS EDGE CRUSHED
ROCK
MAX. GRADE
TRANSITION SHALL
BE 5% WITHOUT A
1071i5' VERTICAL CURVE
M 25'
MIN. gq
MAX. 137
�ooa�
A - A' II aJl
GEOTEXT
MN/DOT TYPE IV
a'
(6' ON1
DOCK SIDE) B - B'
I �.
,rl 'II 5"CONCRETE PLANK
6" CRUSHED ROCK BASE (12" SHOULDER)
GEOTEXTILE
TURN LAST THREE
PLANKS DOWN AND INTO
BOTTOM -\
20`-3p
dllf 31
MAX. 1,97
6" CRUSHED
ROCK BASE BOTTOM
:-
� � I
CONNECTOR - BREAK -AWAY
DETAIL CONNECTOR
NOTES:
* REINFORCED PRECAST CONCRETE PLANKS - 12' LONG, 12" WIDE AND 5" THICK (APPROX. 750 POUNDS) WILL BE
FURNISHED BY THE DNR.
* CRUSHED ROCK, 2" - 2-1/2" DIA. SHALL BE USED FOR THE RAMP BASE, SHOULDERS, THE SPACE BETWEEN
PLANKS, AND, IN THE CASE OF A DOUBLE RAMP. THE AREA BL FWEEN THE RAMPS.
BUREAU OF ENGINEERING MINNESOTA DEPARTMENT OF NATURAL RESOURCES
Designer Date
BRACKE JAN 90 CONSTRUCTION DETAIL
DesignSITE Unit/Region ST (Inds) 12 INCH CONCRETE PLANK
SITE DEVELOPMENT
Revision oot(S. BOAT RAMP
DEC 99 (S.B.)
SEPT 03 (S.B.) -
Digital ® HardcopyW�r
Sheet No,i n I_ I File No. rr n rn n n n -7 n