Preliminary_ida-fs-sc-multi1_Plan.pdf
PDF 21 MB Posted
- Attached to
- ID FLAP FS SC MULTI(1), Custer Motorway Stabilization Project Federal contract opportunity
- Solicitation number
- 69056725R000008
About this file
This is a preliminary engineering and construction planning document for the Custer Motorway Stabilization Project located in Custer County, Idaho, within the Salmon-Challis National Forest. The project involves bank stabilization, roadway improvements, and erosion control along Schedules A and B of the Custer Motorway, spanning approximately 0.14 miles across two main sections (MP 24.0 and MP 25.3). Key technical elements include reinforced soil slopes, buried log revetments, temporary stream diversion, silt fence installation, and environmental design features like root wads and fish passage boulders. The project requires bank stabilization with rootwads and reinforced soil slopes, environmental design to minimize ecological impact, and comprehensive erosion control measures using geotextile materials, fiber rolls, and sediment filter bags.
The documentation includes detailed construction plans, typical cross-sections, wall layout tables, temporary traffic control strategies, and road closure layouts. Temporary traffic management will involve road closures, detour signage, and flagging operations. The project will require careful water management, slope protection, and preservation of the existing landscape within the Salmon-Challis National Forest. The U.S. Department of Transportation's Federal Highway Administration is overseeing the project, with construction planned to accommodate water management and minimize environmental disruption. Specific technical specifications cover soil reinforcement, aggregate placement, geotextile installation, and environmental design elements to stabilize the motorway and protect the surrounding ecosystem.
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| File | Type | Posted |
|---|---|---|
| Prelim Letter_ID FLAP FS SC MULTI(1).pdf | ||
| PROJECT DESCRIPTION_ID FLAP FS SC MULTI(1).pdf |
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Text version
PRELIMINARY - N
OT FOR
CONSTRUCTION
BH TP
CUYD
culv.
CUFT
cubic yard(s) culvert cubic foot (feet) mon.
min.
MGAL
max.
matl.
M.P.
M.L.
monument minimum thousand gallon maximum material mile post main line
W
RIP
DI
G W G WV
CP GPS
36 31
36 31
N
E
N 1000EL. 1234.56
TP
TP
SEC.
SEC.
θs Ø ∆c spiral central angle diameter curve central angle total central angle approach ahead average daily traffic abutment appr.
AH
ADT
abut.
between bearing bridge balance point bench mark back face back btwn brg.
br.
BP
BM
b.f.
BK
ctrs.
CS
cont.
constr. jt.
conn.
conc.
col.
CMP
clr.
cc or c. to c.
centers point of curve to spiral continuous construction joint connection concrete column corrugated metal pipe clear centerline center to center
NO SCALE
NOTE:
1.
on the appropriate plan sheet.
Other symbols used in the plans will be shown in a legend
W west drwg(s).
dist.
diaph.
dia.
DHV
D exp. jt.
exc.
EW
EQ or eq.
EOP
emb.
elev.
El. 94.16 e.f.
e E expansion joint excavation edge of water equation edge of pavement embankment elevation elevation in feet each face superelevation rate east drawing(s) distance diaphragm diameter design hourly volume diameter galv.
ga.
galvanized gage (gauge) jt.
IE
ID
joint invert elevation inside diameter ftg.
flg.
fin.
f.f.
footing flange finish front face
LW
lt. or LT Ls
LPSM
long.
LNFT
lat.
L low water left length of spiral lump sum longitudinal linear foot (feet) latitude length of curve rte.
rt. or RT reqd.
reinf.
rdwy.
R/W R.
R route right required reinforcement roadway right-of-way range radius typ.
Ts
TS
thd.
TBM
T.
T typical tangent distance (spiraled curve) point of tangent to spiral thread temporary bench mark township tangent distance
VPI
vph V vertical point of intersection vehicles per hour design speed (velocity)
STS
struc.
stiff.
stgr.
std.
STA, Sta.
ST
SS
SRS
SQYD
SQFT
spa.
SLRY
shldr.
sect.
SC
SADT
S point of spiral to tangent spiral structural stiffener stringer standard station point of spiral to tangent point of spiral to spiral (no curve) point of spiral to reverse spiral square yard square foot spacing, spaces or spaced slurry unit shoulder section point of spiral to curve seasonal average daily traffic south
KSI
square inch thousand pounds per pvmt.
PT
PST
PSC
PSI
PSF
PS
POT
POS
POC
pl.
PI
PCS
PCC
PC
pavement point of tangent point of spiral to tangent point of spiral to curve pounds per square inch pounds per square foot point of tangent to spiral point on tangent point on spiral point on curve plate point of intersection point of curve to spiral point of compound curve point of curve
OHWM
OG
OD
o. to o.
o.c.
ordinary high water mark original ground outside diameter out to out on center
NC
N normal crown north
A A
DI
National Boundary
State Boundary
County Boundary
City Boundary
Township or Range Line
Section Line
Section Corner (Found, Projected)
Control Point (Terrestrial and GPS)
Gas & Water Meter; Gas & Water Valve
Flagpole; Fire Hydrant
Cooking Grate; Garbage Can; Picnic Table
Boulder; Well; Antenna; Grave
Above Ground Tank; Underground Tank
Spot Elevation; Coordinate Grid Tick
Material Source; Bore Hole; Test Pit
Treeline; Individual Trees
Spring or Seep
Section Line 4
Section Corner (Found, Projected) 4
Section Line 16
Section Corner (Found, Projected)16
Property Line
Parcel Number
National Park Boundary
National Forest Boundary
National Wildlife Refuge Boundary
BLM Lands Boundary
Indian Reservation Boundary
Existing Roadway (Paved, Gravel)
Railroad
Trail
Fiber Roll
Silt Fence
Sandbag
Intermittent Drainage or Small Creek
Large Creek or River
Lake, Pond or Reservoir; Marshland
North Arrow
Slope Stake Limits Top of Cut
Toe of Fill
Construction Limits
Bottom of Ditch
Fence
Gate with Fence
Cattleguard
Guardrail
Concrete Barrier and Guard Wall
Retaining Wall wall face
Signs (single, double post; portable)
Delineators
Pipe Culvert (arrow shows flow)
Pipe Culvert with End Section
Pipe Culvert with Headwall
Pipe Culvert with Drop Inlet
Box Culvert
Underdrain
Overhead/Above Ground Utilities
Underground Utilities
Light, Support w/Anchor) Poles (Power, Telephone, Joint Use, Miscellaneous Utility Features
Building
Right-of-Way Line
Permanent Easement
Construction Easement
Riprap
- no symbol -
Section A-A
EXISTING PROPOSED
STEAM = steam, T = telephone, TV = CATV, W = water P = power, SA = sanitary sewer, SD = storm drain, SS = storm sewer, FM = force main, FO = fiber optic, G = gas, IRR = irrigation, O = oil, UP = transformer or junction box, WF = water fountain EM = electric meter, TP = telephone pedestal, TV = CATV pedestal,
- no symbol -
ABBREVIATIONS
PLAN SYMBOLS AND
101-1W
FP-14
6/2022
WFLHD DETAIL
:4
P
M
N o v e m b e r
D e t W
-1 c p w
-w o rk \d
\i d a -f s -s c -m u lt i1 a b .d g n
OFFICE OF FEDERAL LANDS HIGHWAY
U.S. DEPARTMENT OF TRANSPORTATION, FHWA
SPECIFICATION
APPROVED FOR USE
PROJECT
NUMBER
SHEET
A.2
ID FLAP FS SC MULTI(1)
STATE PLANE COORDINATES GEO COORDINATES
POINT
NUMBER NORTH EAST ORTHOMETRIC
ELEVATION LATITUDE LONGITUDE ELLIPSOID
HEIGHT
COMBINED
FACTOR DESCRIPTION NOTE:
Site 1 1.
22101 1036812.214 1542493.712 6665.033 44°30'38.930536"N 114°22'31.379547"W 6624.5763 0.999641836 5/8" ir w/fhwa alum cap
22102 1036809.318 1542246.766 6681.328 44°30'38.890724"N 114°22'34.787253"W 6640.875 0.999641112 5/8" ir w/fhwa alum cap
22103 1036986.069 1541973.868 6691.832 44°30'40.623689"N 114°22'38.564545"W 6651.3781 0.999640672 spike
22104 1037204.182 1541532.616 6703.768 44°30'42.757358"N 114°22'44.667894"W 6663.3143 0.999640201 spike
22105 1037146.150 1541176.096 6718.574 44°30'42.167941"N 114°22'49.584279"W 6678.1264 0.999639575 5/8" ir w/fhwa alum cap
22106 1037006.834 1541008.364 6729.845 44°30'40.784500"N 114°22'51.890074"W 6689.4031 0.999639074 5/8" ir w/fhwa alum cap
Site 2
22200 1033657.107 1537801.730 6926.967 44°30'07.556430"N 114°23'35.919943"W 6886.626 0.999630394 5/8" ir w/fhwa alum cap
22201 1033559.442 1537696.035 6937.190 44°30'06.586978"N 114°23'37.371837"W 6896.8514 0.999629931 5/8" ir w/fhwa alum cap
22202 1033391.906 1537409.787 6949.065 44°30'04.918951"N 114°23'41.310319"W 6908.7301 0.999629431 5/8" ir w/fhwa alum cap
22203 1033177.548 1537025.151 6961.153 44°30'02.783817"N 114°23'46.603142"W 6920.8227 0.999628944 5/8" ir w/fhwa alum cap
22204 1033041.287 1536698.887 6951.541 44°30'01.422617"N 114°23'51.095704"W 6911.213 0.99962948 5/8" ir w/fhwa alum cap
COORDINATE SYSTEM : Idaho Central SPCS NAD83 2011 VERTICAL DATUM : Orthometric elevations based on the NAVD88 GEOID18
EPOCH DATE : 2010.000
CADD SYSTEM COORDINATE SYSTEM : ID83/2011-CF NSRS11(NAD83/2011) Idaho, Central Zone, US Foot
PROJECT : Custer Motorway Stabilization Project DATE OF FIELD WORK : August 2022
PROJECT UNITS : US SURVEY FOOT
-M ar -2
1:
P M c:
\p w
-w or k\ d0 cu st er _m ot or w ay
_c on tr ol sh ee t.
xl sx ]S he et
To precisely check distances between points as measured on the ground, inverse the state plane coordinates and divide the computed distance by a mean combined factor of the two points.
PROJECT
D.1ID FLAP FS SC MULTI(1)
SHEET
NUMBER
SURVEY CONTROL
PRELIMINARY - N
:4
O c to b e r
W a ll
T a b u la ti o n
S h e e t] p w w o r k \d
\i d a f s s c m u lt i1 g a a .d g n
WALL LAYOUT TABLES
PROJECT
G.4
CUSTE
R M
OTORWAY
Challis Creek Road
M4-9R
M4-9R
M4-9L
M4-9L
M4-9L
M4-9R
W16-8P
W16-8P
W16-8P
W16-8P
W16-8P
W16-8P
W16-8P
W20-3
W20-2
M4-8a
M4-8a
M4-10R
M4-10L
R11-3a
R11-3a
Barricade, Type 3
Barricade, Type 3
N
Custer, ID
±14 miles to
RESERVIOR CAMPGROUND
MOSQUITO FLAT
CAMPGROUND
MILL CREEK
Roadway closure
Scale in miles
DETOUR
DETOUR
AHEAD
DETOUR
CLOSED
ROAD
AHEAD
END
DETOUR
LOCAL TRAFFIC ONLY
ROAD CLOSED
4 MILES AHEAD
DETOUR
DETOUR
DETOUR
DETOUR
END
DETOUR
LOCAL TRAFFIC ONLY
ROAD CLOSED
1/2 MILE AHEAD
DETOUR
DETOUR
FOREST
NATIONAL
SALMON-CHALLIS
CHALLIS
1 1 2
:5
F e b r u a r y
D
E T
O U
R P
L A p w w o r k \d
\i d a f s s c m u lt i1 h b .d g n
CONTROL PLAN
TEMPORARY TRAFFIC
PROJECT
H.2
No Scale
TYPICAL ROAD CLOSURE
(Mounted on type 3 barricade)
48" x 30"
R11-2
(3 EACH)
barricade type 3
Temporary traffic control, 36" x 36"
W20-3
ROAD
CLOSED
CLOSED
ROAD
AHEAD
500'
36" x 36"
W20-3
(Mounted on type 3 barricade)
48" x 30"
R11-2
(3 EACH)
barricade type 3
Temporary traffic control, ROAD
CLOSED
CLOSED
ROAD
AHEAD
500'
:1
O c to b e r
R o a d C lo s u r e
R o a d C lo s u r e
S h e t] p w w o r k \d
\i d a f s s c m u lt i1 h c .d g n
ROAD CLOSURE DETAIL
PROJECT
H.3
ROAD WORK
END
WORK
ROAD
AHEAD
ROAD NAME
WORK
ROAD
AHEAD
ROAD WORK
END
WORK
ROAD
xxxxx
WORK
ROAD
xxxxxxx
ROAD WORK
NEXT xx MILES
WORK
ROAD
AHEAD
xx
MPH
ROAD NAME
ROAD WORK
END
WORK
ROAD
xxxxxxx
ROAD WORK
END
xx
MPH
WORK
ROAD
xxxxxxx
ROAD WORK
NEXT xx MILES
12.
11.
10.
9.
8.
7.
6.
5.
4.
3.
2.
1.
ROAD TYPE
DISTANCE BETWEEN
A B C
NOTE:
M in o r R o a d
M a jo r R o a d
C
B as de ter mi ne d b y t he C
O
Wor k z on e A re a o f I nfl ue nc
(S ee S ign S pa cin g T ab le)
ADVANCE W
ARNI
NG
AREA
(S ee S ign S pa cin g T ab le)
ADVANCE W
ARNI
NG
AREA
A
B
C
A
A
A
A
Pr oje ct Lim its
See Note 8 W16-8P W20-1 over
W20-1
G20-2
See Note 9 W20-1
See Note 9 W20-1
(optional) W13-1P
See Note 10 G20-1
G20-2
See Note 8 W16-8P W20-1 over
G20-2
G20-2
See Note 9 W20-1
See Note 9 W20-1
(optional) W13-1P
See Note 10 G20-1 specify the distance to the work area in feet or in miles. Install an The message on the W20-1 signs may be ROAD WORK AHEAD or may roads only).
name of the road on which the construction does occur (applies to major construction work occurs, include a supplementary plaque indicating the If W20-1 is placed on a roadway other than that on which the actual
Cover post-mounted signs when not applicable.
Do not store traffic control devices along the roadway when not in use.
Maintain two-way traffic during all non-work hours except as approved.
Ensure all sign supports exposed to traffic are crashworthy.
construction area.
needed to indicate a maximum recommended speed through the Install advisory speed plaques under the W20 series warning signs as messages as required.
signs, locate the warning signs to fit field conditions as approved. Vary Where advance warning signs, placed as shown, interfere with permanent operations.
and details in this traffic control plan as necessary to accommodate actual applicable to this project. The Contractor may add or delete information Not all details shown on the temporary traffic control sheets may be
Erect all project advance warning signs before starting construction work.
State standards may be used as an alternative if approved.
verify that an encroachment permit has been obtained.
If signing on a roadway under a jurisdiction other than the client agency, nearest whole mile.
at each end of the project. Show the distance on the G20-1 sign to the
Ro ad N ame
SIGN SPACING TABLE
For work zones that are 2 miles or more in length, install G20-1 signs
Sign Spacing Table.
When used, place the two W20-1 signs "B" feet apart according to the additional W20-1 sign when approach speeds exceed 50 mph.
Expressway / Freeway
NO SCALE
SIGNS IN FEET
Rural greater than 50 mph
Urban and Rural 35 mph to 50 mph
Urban and Rural 30 mph and less
ADVANCE SIGNING
TEMPORARY TRAFFIC CONTROL
635-1
FP-24, FP-14
2/2024
FLH STANDARD
:1 o v e m b e r
S td p w
-w o rk \d
\i d a -f s -s c -m u lt i1 h d .d g n
OFFICE OF FEDERAL LANDS HIGHWAY
U.S. DEPARTMENT OF TRANSPORTATION, FHWA
SPECIFICATION
APPROVED FOR USE
PROJECT
H.4
NO SCALE
posted speed, not the advisory speed.
Approach speed based on the regulatory *
5.
4.
3.
2.
1.
in the buffer space.
Do not allow equipment, materials, or vehicles to be parked or stored
WORK AHEAD (W20-1) and END ROAD WORK (G20-2) signs.
If closure is completely within the project limits, eliminate the ROAD display the name of the Contractor on the pilot car.
sign at a conspicuous location on the rear of vehicle. Prominently
For pilot car operation, mount the PILOT CAR FOLLOW ME (G20-4) conditions as approved.
Final location and spacing of devices may be changed to fit field to those depicted for the opposite direction of travel.
Signs are shown for one direction of travel only. Place signs similar
(optional)
Flagger location
ADVANCE WARNING AREA (See Sign Spacing Table)
TERMINATION AREAVARIABLEBUFFER SPACEABC
WORK
ROAD
AHEAD
See Note 4
W20-1
BE
PREPARED
TO STOP
W20-7
(optional)
W16-2Pxxx
FEET
Flagger location
A
ROAD WORK
END
See Note 4
G20-2
W3-4
Traffic flow
Traffic flow
NOTE:LENGTH AND SPACING TABLE
SIGN SPACING TABLE
LENGTH
BUFFER SPACE
SPEED*
APPROACH
BUFFER SPACE
Spacing Table)
(See Length and
Spacing Table)
(See Length and WORK SPACE
ROAD TYPE
DISTANCE BETWEEN
A B C
Expressway / Freeway
SIGNS IN FEET
Rural greater than 50 mph
Urban and Rural 35 mph to 50 mph
Urban and Rural 30 mph and less
FEETMPH
(WITH FLAGGERS)
ROAD CLOSURE LAYOUT
TEMPORARY TRAFFIC CONTROL
635-5
:1 o v e m b e r
S td p w w o r k
\d
\i d a f s s c m u lt i1 h e .d g n
OFFICE OF FEDERAL LANDS HIGHWAY
U.S. DEPARTMENT OF TRANSPORTATION, FHWA
SPECIFICATION
APPROVED FOR USE
PROJECT
H.5
Traffic flow
Traffic flow not the advisory speed.
Approach speed based on the regulatory posted speed, *
Device spacing
Spacing Table)
(See Length and Channelizing devices
(optional)
BUFFER SPACE
Flagger location
(See Length and Spacing Table)ADVANCE WARNING AREA (See Sign Spacing Table)
ATAPER AREABUFFER SPACEVARIABLEBUFFER SPACETAPER AREAABC
WORK
ROAD
AHEAD
See Note 4
W20-1
ONE LANE
ROAD
AHEAD
xx
MPH
W20-4
(optional)
W13-1P xxx
FEET
W20-7
W16-2P
Flagger location
WORK SPACE
TERMINATION AREA
ROAD WORK
END
See Note 4
G20-2 stored in the buffer space.
Do not allow equipment, materials, or vehicles to be parked or
Requirements, Section 156.
For project specific minimum width, refer to the Special Contract
WORK AHEAD (W20-1) and END ROAD WORK (G20-2) signs.
If closure is completely within the project limits, eliminate the ROAD display the name of the Contractor on the pilot car.
sign at a conspicuous location on the rear of vehicle. Prominently
For pilot car operation, mount the PILOT CAR FOLLOW ME (G20-4) conditions as approved.
Final location and spacing of devices may be changed to fit field to those depicted for the opposite direction of travel.
Signs are shown for one direction of travel only. Place signs similar
6.
5.
4.
3.
2.
1.
(optional)(optional)
NOTE:
SIGN SPACING TABLE
LENGTH AND SPACING TABLE
50' - 100' 50' - 100'
See Note 5
10' min.
ROAD TYPE
DISTANCE BETWEEN
A B C
Expressway / Freeway
SPEED*
APPROACH
AREA
TAPER
SPACE
BUFFER
SPACE
WORK
CHANNELIZING DEVICE
LENGTH
SPACE
BUFFER
Rural greater than 50 mph
Urban and Rural 35 mph to 50 mph
Urban and Rural 30 mph and less
SIGNS IN FEET
FEET
SPACING IN FEET
MPH
(WITH FLAGGERS)
SINGLE LANE CLOSURE LAYOUT
TEMPORARY TRAFFIC CONTROL
635-6
:1 o v e m b e r
S td p w w o r k
\d
\i d a f s s c m u lt i1 h f .d g n
OFFICE OF FEDERAL LANDS HIGHWAY
U.S. DEPARTMENT OF TRANSPORTATION, FHWA
SPECIFICATION
APPROVED FOR USE
PROJECT
H.6
See post detail (typ.)
Breakaway holes
See table for hole size parallel to sign face.
Field drill holes through post
Bottom of sign panel
Post�
Local tangent
< 10
" diameter4 1Attach sign panels with a minimum of two a minimum lateral distance of 1 ft behind the face of lateral offset of 2 ft may be used. In areas with curbs, 6" x 6" or larger.
Use 7 ft minimum spacing between posts for sign posts and 6 ft minimum mounting height for secondary sign.
use 7 ft minimum mounting height for main sign
NOTE:
90°
93°
WOOD POST SELECTION TABLE
X X
0.75X
H
H
X
0.2X0.6X 0.2X
Y
H
D
H
D
H
D
Long side of post
D
7.
6.
5.
4.
3.
2.
1.
In areas where lateral distance is limited, a minimum
D = Post embedment depth for average soil conditions.
Select post lengths to fit field conditions.
H1 and H2 = Overall post length.
bolts per post.
In pedestrian locations, or in areas with obstructed views, the curb may be used.
SINGLE POST SIGN TWO POST SIGN
SIGN INSTALLATION ANGLE
POST DETAIL
E d g e o f s h o u ld e r
E d g e o f tr a v e le d w a y
State standards may be used as an alternative if approved.
S e e N o te m in
S e e N o te m in
See Note 4
6' - 12'
On tangent alignment
200'
"X"
WIDTH AREA
OF POSTS
NUMBER POST SIZE D HOLE SIZE
(SQFT)
Other Shapes ≤ 48" Diamond ≤ 36"
Other Shapes ≤ 12' Diamond ≤ 48"
(INCH) (INCH) (INCH)
Diamond ≤ 48"
65 - 95
65 - 95
50 - 65
50 - 65
20 - 50
10 - 20
10 - 20
> 30'
> 17'
12' - 16'
> 13'
6 x 6
4 x 6
4 x 6
6 x 6
4 x 6
4 x 4
6 x 6
4 x 6
4 x 4
1.5
1.5
1.5
1.5
WOOD POSTS
SIGN INSTALLATION
TEMPORARY TRAFFIC CONTROL
635-14
:5
N o v e m b e r
S td p w
-w o rk \d
\i d a -f s -s c -m u lt i1 h g .d g n
OFFICE OF FEDERAL LANDS HIGHWAY
U.S. DEPARTMENT OF TRANSPORTATION, FHWA
SPECIFICATION
APPROVED FOR USE
PROJECT
H.7
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