J3_1240LU24Q0059ProjectPlans.pdf

MALTA

MISSOULA

GREAT FALLS

GLASGOW

HARDIN

BILLINGS

HELENA

POLSON

KALISPELL

I-90

I-90

I-15

I-15 I-90

I-94

U.S. DEPARTMENT OF AGRICULTURE

FOREST SERVICE, REGION 1

DARBY RANGER DISTRICT

BITTERROOT NATIONAL FOREST

RAVALLI COUNTY, MONTANA

CONSTRUCTION PLANS FOR:

LITTLE ROCK CREEK TRAIL

BRIDGE REPLACEMENT

TRAIL 580, MP 2.87

VICINITY MAP

DATEFOREST ENGINEER

APPROVED:

DATE

BITTERROOT NATIONAL FOREST

FOREST SUPERVISOR

APPROVED

BITTERROOT NATIONAL FOREST

DATEDISTRICT RANGER

BITTERROOT NATIONAL FOREST

ENGINEERS

PLANNERS

SURVEYORS

PROJECT

LOCATION

/2

/2

:1

JA

C O

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\D R

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IN

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A L

\2 D

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N

\7

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L

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RECOMMENDED:

PROJECT

LOCATION

R W

R W

T3N T2N

T4N T3N

R W

R W

DATEDIRECTOR OF ENGINEERING

APPROVED

NORTHERN REGION - USFS

DATEREGIONAL BRIDGE ENGINEER

NORTHERN REGION - USFS

RECOMMENDED:

MATERIAL SOURCES

GOVERNMENT FURNISHED

WASTE SITE

UNCLASSIFIED BORROW

RIPRAP

CONTRACTOR FURNISHED

ALL OTHER MATERIALS

R-3018

INDEX TO SHEETS

NO. DESCRIPTION

1 COVER

2 GENERAL NOTES & ESTIMATED QUANTITIES

3 PROJECT CONTROL & TYPICAL SECTIONS

4 TRAIL PLAN & PROFILE

5 APPROACH STEPS PLAN & PROFILE

6 BRIDGE GENERAL LAYOUT

7 FOUNDATION PLAN

8 ABUTMENT PLAN & ELEVATION

9 APPROACH STEPS DETAILS

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

FOREST SERV I CE

DEP AR TMENT OF AGR I CU LT

UR

E

/2

/2

4 1

:4 6 J

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F

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ID

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D E

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N \D

R A

W

IN

G S

\D W

G \S

T R

U C

T U

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L \2

D E

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IG

N \7

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T R

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B R

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REGION 1

NORTHERN REGION

GENERAL NOTES &

ESTIMATED

QUANTITIES

Apr-24

R-3018

T. ELLIOTT

R. DAWE

J. ROSKE

7140.049

LITTLE ROCK

BITTERROOT

DARBY

CREEK TRAIL

BRIDGE

RANGER DISTRICT

NATIONAL FOREST

TRAIL 580, MP 2.87

SUMMARY OF ESTIMATED QUANTITIES

ITEM

NO.

ITEM DESCRIPTION UNIT QUANTITY COMMENTS

15101 MOBILIZATION LUMP SUM ALL LSQ

INCLUDES STANDARD MOBILIZATION AS WELL AS MATERIAL

AND EQUIPMENT TRANSPORTATION TO PROJECT SITE.

15221 CONSTRUCTION SURVEYING AND STAKING LUMP SUM ALL LSQ LICENSED SURVEYOR REQUIRED.

15713 SOIL EROSION & POLLUTION CONTROL LUMP SUM ALL LSQ SEE GENERAL NOTES THIS SHEET.

20302 REMOVAL OF EXISTING TIMBER BRIDGE, DISPOSAL METHOD F EACH 1 AQ DISPOSE ONSITE UNDER DIRECTION OF CO.

21001 TRAIL EMBANKMENT CUBIC YARD 20 CQ

CONTRACTOR FURNISHED MATERIAL FROM A COMMERCIAL

SOURCE OR MATERIAL SECURED ONSITE UNDER DIRECTION

OF CO. IN PLACE QUANTITY, NOT ADJUSTED FOR

SHRINK/SWELL. ALL CLEARING AND GRUBBING NECESSARY

FOR TRAIL CONSTRUCTION IS INCIDENTAL TO THIS ITEM.

25101 PLACED RIPRAP, CLASS 3, ACCEPTANCE METHOD B CUBIC YARD 28 CQ

MATERIAL OBTAINED ONSITE UNDER DIRECTION OF CO OR

CONTRACTOR FURNISHED MATERIAL FROM A COMMERCIAL

SOURCE. MATERIAL MAY NOT BE OBTAINED FROM

STREAMBED.

25302 GABION BASKETS, WELDED WIRE, GALVANIZED COATING CUBIC YARD 8 CQ

INCLUDES CONTRACTOR FURNISHED ROCK, GEOTEXTILE,

HARDWARE, AND TOP LAYER OF CIP CONCRETE.

25409 TREATED TIMBER STEPS MFBM 1.52 CQ

STRUCTURE & HARDWARE ONLY (BACKFILL INCLUDED IN ITEM

21001).

55701A

UNTREATED STRUCTURAL TIMBER AND LUMBER, BRIDGE

RAILING (WITH HARDWARE) MFBM 0.6 CQ PROVIDE ALASKA YELLOW CEDAR PER R6-STD-963-10.

55701B

UNTREATED STRUCTURAL TIMBER AND LUMBER, RUNNING

PLANKS

MFBM 0.49 CQ

55703

TREATED STRUCTURAL TIMBER AND LUMBER, SILLS &

BACKING PLANKS

MFBM 0.47 CQ

55706A

UNTREATED STRUCTURAL TIMBER AND LUMBER, GLUED

LAMINATED, BRIDGE STRINGERS AND DIAPHRAGMS (WITH

HARDWARE)

MFBM 2.21 CQ PROVIDE ALASKA YELLOW CEDAR PER R6-STD-963-10.

55706B UNTREATED STRUCTURAL TIMBER AND LUMBER, DECKING MFBM 1.05 CQ PROVIDE ALASKA YELLOW CEDAR PER R6-STD-963-10.

AQ = ACTUAL QUANTITY LSQ = LUMP SUM QUANTITY CQ = CONTRACT QUANTITY (SEE SECTION 109.02(B) OF THE STANDARD SPECIFICATIONS)

SUBSTRUCTURE DESIGN: THIS SUBSTRUCTURE HAS BEEN DESIGNED IN

ACCORDANCE WITH THE AASHTO "LRFD GUIDE SPECIFICATIONS FOR DESIGN OF

PEDESTRIAN BRIDGES", 2009, AND AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS,

9TH EDITION.

DESIGN NOTES AS FOLLOWS:

DEAD LOAD: ACTUAL

LIVE LOAD: PEDESTRIAN LIVE LOAD = 90 PSF

SNOW LOAD = 70 PSF

ALL OTHER LOADS, COMBINATION OF LOADS, DEFLECTION CRITERIA, ETC.

CONFORMS TO THE GUIDE SPECIFICATIONS FOR DESIGN OF PEDESTRIAN BRIDGES.

GEOTECHNICAL DESIGN PARAMETERS: THE SUBSTRUCTURE IS DESIGNED FOR A

NOMINAL BEARING RESISTANCE OF 10,000 PSF.

SUPERSTRUCTURE DESIGN: SUPERSTRUCTURE ELEMENTS ARE DESIGNED AND

SPECIFIED BY OTHERS ACCORDING TO THE R6-STD-963-10 USFS STANDARD

DRAWINGS.

DESIGN NOTES

FIELD TREATMENT: FURNISH COPPER NAPHTHENATE (2% SOLUTION) FOR FIELD TREATING OF TREATED WOOD. ALL ABRASIONS AND FIELD CUTS (APPROVED BY THE CO) SHALL BE CAREFULLY TRIMMED AND GIVEN THREE BRUSH COATS OF THE FIELD TREATMENT SOLUTION. WHERE APPROVED FIELD DRILLING OF BOLT OR NAIL HOLES IS REQUIRED, THE

HOLES SHALL BE POURED FULL OF PRESERVATIVE PRIOR TO INSERTING THE FASTENERS.

HARDWARE AND STRUCTURAL STEEL: USE GALVANIZED STEEL SHAPES, PLATES AND BARS CONFORMING TO THE REQUIREMENTS OF AASHTO M183 (ASTM A36). USE GALVANIZED HARDWARE MEETING THE REQUIREMENTS OF AASHTO M270, GRADE 36, WITH NUTS AND BOLTS CONFORMING TO ASTM A307, GRADE A. USE MALLEABLE IRON WASHERS AGAINST

WOOD UNLESS OTHERWISE NOTED.

WHEN STRUCTURAL STEEL IS TO BE WELDED, THE WELDING PROCEDURE SHALL BE IN ACCORDANCE WITH AWS D1.1 AND

SHALL BE SUITABLE FOR THE GRADE OF STEEL AND INTENDED USE OR SERVICE.

FABRICATION: SUBMIT SHOP DRAWINGS FOR ALL TIMBER COMPONENTS AND HARDWARE AND STRUCTURAL STEEL .

SHOW ALL DIMENSIONS AND FABRICATION DETAILS FOR ALL CUT OR BORED TIMBER. FIELD DRILLING OF HOLES SHALL NOT

BE ALLOWED UNLESS OTHERWISE NOTED ON THE PLANS.

REBAR: USE REBAR OF THE DEFORMED TYPE CONFORMING TO AASHTO M31 (ASTM A615), GRADE 60.

GENERAL NOTES

SPECIFICATIONS: CONSTRUCT THE PROJECT IN COMPLIANCE WITH FEDERAL

HIGHWAY ADMINISTRATION STANDARD SPECIFICATIONS FOR CONSTRUCTION OF

ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS (FP-14) AND APPLICABLE

SPECIAL PROJECT SPECIFICATIONS.

HELICOPTER TRANSPORT: IT IS ANTICIPATED THAT HELICOPTER TRANSPORT OF

CONSTRUCTION MATERIALS AND EQUIPMENT WILL BE NECESSARY FOR THE

CONSTRUCTION OF THIS PROJECT. THE STAGING AREAS FOR HELICOPTER

TRANSPORTATION IS ASSUMED TO BE AT THE TRAILHEAD FOR PICKUP (ROUGHLY

THREE MILES FROM THE BRIDGE SITE) AND ONSITE FOR DROPOFF. THE FINAL

STAGING AREAS ARE TO BE COORDINATED WITH THE CO. IF HELICOPTER TRANPORT

IS UTILIZED, SUBMIT A PLAN TO THE CO FOR APPROVAL THAT INCLUDES THE

FOLLOWING: HELICOPTER SPECIFICATION AND LOAD CAPACITY, CONSTRUCTION

MATERIALS AND/OR EQUIPMENT THAT WILL BE HAULED, AND A DETAILED SEQUENCE

OF THE TRANSPORTATION OF THE ITEMS.

MATERIAL NOTES

CONCRETE: PROVIDE CONCRETE IN TOP LAYER OF GABION BASKETS ACCORDING TO THE REQUIREMENTS OF FP-14

SECTION 601, MINOR CONCRETE STRUCTURES.

TIMBER & LUMBER: USE SOLID SAWN TIMBER MEMBERS CONFORMING TO THE REQUIREMENTS OF THE GRADING RULES AGENCY FOR THE SPECIES, TYPE, AND GRADE SPECIFIED BELOW. USE GLUED-LAMINATED MEMBERS CONFORMING TO THE AMERICAN INSTITUTE OF TIMBER CONSTRUCTION (AITC) 117-2001 FOR THE COMBINATION, SPECIES, USE, AND APPEARANCE

SPECIFIED BELOW.

TREATMENT: TREAT ALL TIMBER MEMBERS DESIGNATED FOR TREATEMENT AFTER FABRICATION. PRESERVATIVE TREATMENT SHALL BE IN ACCORDANCE WITH THE CURRENT AWPA SPECIFICATIONS USING THE TREATMENT MATERIALS LISTED BELOW. TREATMENT WILL COMPLY WITH THE REQUIREMENTS OF THE CURRENT EDITION OF WWPI'S "BEST

MANAGEMENT PRACTICES FOR THE USE OF TREATED WOOD IN AQUATIC ENVIRONMENTS".

- COASTAL REGION DOUGLAS FIR-LARCHTIMBER STEPS

ROUGH SAWN, NO. 2 GRADE

GRADING RULES AGENCY - WWPA, WCLIB

TIMBER STEPS

- SEE R6-STD-963-10 STANDARDS

- SEE R6-STD-963-10 STANDARDS

- AWPA U1 USING UC4C

- COPPER NAPHTHENATE IN HYDROCARBON SOLVENT A

- CCA

- ALTERNATE OIL-BASED PRODUCTS WHEN APPROVED EQUAL

TIMBER SUPESTRUCTURE, SILLS,

AND BACKING PLANKS

TIMBER SUPESTRUCTURE, SILLS,

AND BACKING PLANKS

CP-1

CP-2

CP-3

CONTROL POINT TABLE

POINT #

CP-1

CP-2

CP-3

NORTHING

691179.96

691226.70

691158.75

EASTING

756534.77

756649.43

756615.00

ELEVATION

4271.32

4271.64

4276.68

DESCRIPTION

SET RPC

SET RPC

SET RPC

LAYOUT POINTS

POINT #

NORTHING

691201.30

691190.63

EASTING

756594.50

756555.95

ELEVATION

4268.36

4268.36

DESCRIPTION

CENTER ABUT 1

CENTER ABUT 2

LAYOUT POINTS

POINT #

NORTHING

691219.32

691206.30

691184.03

691187.35

EASTING

756637.72

756612.57

756532.10

756506.39

ELEVATION

4272.88

4272.86

4271.47

4268.68

DESCRIPTION

BEGIN TRAIL

BEGIN STEPS

END STEPS

END TRAIL

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

FOREST SERV I CE

DEP AR TMENT OF AGR I CU LT

UR

E

/2

/2

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REGION 1

NORTHERN REGION

PROJECT CONTROL &

TYPICAL SECTIONS

Apr-24

R-3018

T. ELLIOTT

R. DAWE

J. ROSKE

7140.049

LITTLE ROCK

BITTERROOT

DARBY

CREEK TRAIL

BRIDGE

RANGER DISTRICT

NATIONAL FOREST

TRAIL 580, MP 2.87

N

SCALE IN FEET

0 25 50PROJECT CONTROL

SCALE: 1" = 50'

FLO

W

EXISTING FEATURES

EXISTING EDGE OF WATER

MAJOR CONTOUR (5')

MINOR CONTOUR (1')

EXISTING EDGE TRAIL

EXISTING BRIDGE

TRAIL LAYOUT POINTS ABUTMENT LAYOUT POINTS CONTROL POINTS

* TRAIL LAYOUT POINTS ARE AT FINISHED PROFILE GRADE OR TOP OF STEP.

* ABUT LAYOUT POINTS ARE TO THE BOTTOM OF BASKET ELEVATIONS.

LEGEND

EXISTING

TRAIL BRIDGE

EXISTING EDGE

TRAIL, TYP

EXISTING

EQUESTRIAN FORD

TO

T

R

AI

LH

EA

D

4'-0" MIN

6'-8" MAX

CENTERLINE

TRAIL

TRAIL TYPICAL SECTION

NOT TO SCALE

EXISTING BRIDGE TO BE REPLACED

PROFILE

GRADE

1.25

1.25

EXISTING

GROUNDTRAIL EXCAVATION

(CUT)

NATIVE

SURFACING

TRAIL EMBANKMENT

(FILL)

CP-1

CP-2

CP-3

0+00

1+00

2+00

2+

PC

: 0+43.20

P T

: 0

.9

P C

: 1

.5

PT: 1

+75

.2

CURVE DATA:

R=20.00 L=12.75'

Δ=36°31'27"

42654265

70 42

70 42 70 42

BEGIN TAPER

STA:0+64.00

END TAPER

STA:1+58.58

CURVE DATA:

R=20.00 L=16.65' Δ=47°41'22"

0+00 1+00 2+00 2+24

10.17% 0.00%

-13.41%

-10.23%

13.18%

-5.94%

STA = 0+40.00

EL = 4272.88

S T

A

.1

E L

.6

S T

A

.6

E

.6

S T

A

.6

E

.4

S T

A

.0

E

.6

S T

A

.1

E

.8

PVI STA: 0+49.00

PVI ELEV: 4274.06

LVC: 10.00

B V

C S

.0

B V

C E

.4

E V

C S

.0

E V

C E

.7

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

FOREST SERV I CE

DEP AR TMENT OF AGR I CU LT

UR

E

/2

/2

4 1

:4 6 J

A C

O B

F

.0

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IN

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\D W

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REGION 1

NORTHERN REGION

TRAIL PLAN &

PROFILE

Apr-24

R-3018

T. ELLIOTT

R. DAWE

J. ROSKE

7140.049

LITTLE ROCK

BITTERROOT

DARBY

CREEK TRAIL

BRIDGE

RANGER DISTRICT

NATIONAL FOREST

TRAIL 580, MP 2.87

N

SCALE IN FEET

0 10 20

CONTOUR INTERVAL = 1'

(PLOT SIZE = 11" x 17")

PLAN

C R

E E

K

L

IT

T L E

R O

C K

REMOVE &

DISPOSE EXISTING

BRIDGEEXISTING EDGE

TRAIL, TYP

NEW TRAIL

BRIDGE

PROFILE

NEW TRAIL

BRIDGE

EXISTING

GROUND AT

CENTERLINE

TRAIL

CENTERLINE TRAIL

FINISHED GRADE

EDGE OF

WATER, TYP.

CENTERLINE

TRAIL

EDGE OF

TRAIL

EXISTING FEATURES

EXISTING EDGE OF WATER

MAJOR CONTOUR (5')

MINOR CONTOUR (1')

EXISTING EDGE TRAIL

EXISTING BRIDGE

LEGEND

EXISTING

EQUESTRIAN FORD

STA 0+40

BEGIN TRAIL WORK

MATCH EXISTING

STA 1+80

END TRAIL WORK

MATCH EXISTING

TIMBER

STEPS, TYP

TOP OF

CUT TYP.

TOE OF

FILL TYP.

STRUCTURE EXCAVATION

AS REQUIRED

2 CY CUT, 7 CY FILL 1 CY CUT, 14 CY FILL

CLASS 3 RIPRAP

OBTAINED ONSITE, TYP

2'

2'

2'

2'

LAYOUT PT

CP-1

P C

: 1

.5

LAYOUT PT

0.0%

-3.0%

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

FOREST SERV I CE

DEP AR TMENT OF AGR I CU LT

UR

E

/2

/2

4 1

:4 6 J

A C

O B

F

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L

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IN

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\D W

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REGION 1

NORTHERN REGION

APPROACH STEPS

PLAN & PROFILE

Apr-24

R-3018

T. ELLIOTT

R. DAWE

J. ROSKE

7140.049

LITTLE ROCK

BITTERROOT

DARBY

CREEK TRAIL

BRIDGE

RANGER DISTRICT

NATIONAL FOREST

TRAIL 580, MP 2.87

N

SCALE IN FEET

0 2.5 5

NEW TRAIL

BRIDGE

CENTERLINE

TRAIL

EDGE OF

TRAIL

NEW TRAIL

BRIDGE

TIMBER

STEPS, TYP

'-0

'-0

TIMBER

STEPS, TYP

EXISTING EDGE

TRAIL, TYP

EXISTING EDGE

TRAIL, TYP

S T

A

.9

C

/L B

R G

A

B U

T

S T

A

.9

C

/L B

R G

A

B U

T

APPROACH PLAN DEPARTURE PLAN

TIMBER STEPS,

SEE DETAILS

ON SHEET 9

TIMBER STEPS,

SEE DETAILS

ON SHEET 9

COMPACT TRAIL

EMBANKMENT UNDER

STEPS AS REQUIRED

APPROACH STEPS ELEVATION

SCALE: 1" = 5'

DEPARTURE STEPS ELEVATION

SCALE: 1" = 5'

EXISTING GROUND

AT CENTERLINE

TRAIL

CENTERLINE TRAIL

FINISHED GRADE

EXISTING

GROUND AT

CENTERLINE

TRAIL

CENTERLINE

TRAIL FINISHED

GRADE

NEW TRAIL

BRIDGE

N

SCALE IN FEET

0 2.5 5

18'-0" TOTAL LENGTH OF STEPS 24'-0" TOTAL LENGTH OF STEPS

COMPACT TRAIL

EMBANKMENT UNDER

STEPS AS REQUIRED

18'-0" TOTAL LENGTH OF STEPS

6'-0" TYP

LANDING LENGTH

T O

P O

F D

E C

K T

O T

O P

S T

E P

T O

P O

F D

E C

K T

O T

O P

O F

S T

E P

24'-0" TOTAL LENGTH OF STEPS

6'-0" TYP

LANDING LENGTH

CENTERLINE

TRAIL

EDGE OF

TRAIL

'-0

'-0

LAYOUT PT

8001 LAYOUT PT

8"x8" TIMBER STEP

MEMBER, TYP

8"x8" TIMBER STEP

MEMBER, TYP

'-4

T

Y P

'-4

T

Y P

BURY ALL LOWEST COURSE MEMBERS A MINIMUM OF 1/2 MEMBER

HEIGHT WITH COMPACTED FILL ON EXTERIOR OF STEPS.

MIN EXTERIOR

FILL HEIGHT

MIN EXTERIOR

FILL HEIGHT

FILL TIMBER STEPS WITH

COMPACTED TRAIL

EMBANKMENT MATERIAL, TYP

FILL TIMBER STEPS WITH

COMPACTED TRAIL

EMBANKMENT MATERIAL, TYP

DIMENSION IS TO TOP OF DECK (FG ELEVATION). TOTAL HEIGHT OF THE

TOP STEP IS 8" AFTER THE INSTALLATION OF THE 2" RUNNING PLANKS.

1+00

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

FOREST SERV I CE

DEP AR TMENT OF AGR I CU LT

UR

E

/2

/2

4 1

:4 6 J

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F

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IN

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\D W

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REGION 1

NORTHERN REGION

BRIDGE GENERAL

LAYOUT

Apr-24

R-3018

T. ELLIOTT

R. DAWE

J. ROSKE

7140.049

LITTLE ROCK

BITTERROOT

DARBY

CREEK TRAIL

BRIDGE

RANGER DISTRICT

NATIONAL FOREST

TRAIL 580, MP 2.87

SCALE IN FEET

0 5 10

CONTOUR INTERVAL = 1'

(PLOT SIZE = 11" x 17")

PLAN

REMOVE & DISPOSE

EXISTING BRIDGE

EXISTING EDGE

TRAIL, TYP

NEW TRAIL

BRIDGE

NEW TRAIL

BRIDGE

EXISTING GROUND

AT CENTERLINE

TRAIL

CENTERLINE TRAIL

FINISHED GRADE

EDGE OF

WATER, TYP.

40.00'

CL BEARING TO CL BEARING

CENTERLINE BRG.

ABUTMENT 1

FG EL = 4274.69

CENTERLINE BRG.

ABUTMENT 2

FG EL = 4274.69

S T

A

.9

C

/L B

R G

A

B U

T 1 40.00'

CL BEARING TO CL BEARING

S T

A

.9

C

/L B

R G

A

B U

T

HYDRAULIC DATA:

Q2 = 128 CFS

AVG. DEPTH = 2.02'

BANKFULL WIDTH = 25'±

Q100 = 380 CFS

AVG. DEPTH = 3.49'

Q100 = 4270.41' AT UPSTREAM

EDGE OF BRIDGE

ELEVATION

SCALE: 1" = 10'

TYPICAL SECTION

SCALE: 1/4" = 1'-0"

ALASKA YELLOW CEDAR

GLULAM STRINGER

(5-1/8" x 24" ASSUMED

FOR DESIGN)

UNTREATED TIMBER

HANDRAIL, TYP

8' MIN CLEAR WIDTH

(4) SPA @ ±1'-10" = ±7'-4"

'-3

A S

S U

M E

D

2" UNTREATED

TIMBER RUNNING

PLANKS3" TIMBER DECK

PLANKS

GABION BASKET

FOUNDATION, TYP

N

C R

E E

K

L

IT

T L E

R O

C K

CENTERLINE

TRAIL EDGE OF

TRAIL

EXISTING

EQUESTRIAN FORD

0.00%

.5

2.0' FREEBOARD

2 75% OF FLOWS FROM LITTLE ROCK CREEK ARE ASSUMED

TO FLOW THROUGH THIS FORK OF THE STREAM.

RIPRAP DETAIL

NOT TO SCALE

CLASS 3 RIPRAP

OBTAINED ONSITE, TYP

TIMBER

STEPS, TYP

TIMBER

STEPS, TYP

CLASS 3 RIPRAP

OBTAINED ONSITE, TYP

1 BRIDGE SUPERSTRUCTURE AND ALL ASSOCIATED TIMBER MEMBERS SHALL BE

CONSTRUCTED ACCORDING TO USFS GLULAM STRINGER TRAIL BRIDGE STANDARD

DRAWING R6-STD-963-10.

4.7' 4.7'

.2

2.5'

.5

2.

5'

CLASS 3 RIPRAP

OBTAINED FROM

ONSITE, TYP.

BRIDGE

GABION

ABUTMENT

1.5

EXISTING

GROUND, TYP.

PROFILE

GRADE

CP-1

1+00

70 42

LAYOUT PT

LAYOUT PT

EL 4268.36

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

FOREST SERV I CE

DEP AR TMENT OF AGR I CU LT

UR

E

/2

/2

4 1

:4 6 J

A C

O B

F

.0

L

IT

T

L E

R O

C K

C R

E E

K T

R A

IL

B

R

ID

G E

D E

S

IG

N \D

R A

W

IN

G S

\D W

G \S

T R

U C

T U

R A

L \2

D E

S

IG

N \7

.0

L

IT

T L

E R

O C

K C

R E

E K

T R

A

IL

B R

ID

G

E -D

E S

IG

N

.D W

G

REGION 1

NORTHERN REGION

FOUNDATION PLAN

Apr-24

R-3018

T. ELLIOTT

R. DAWE

J. ROSKE

7140.049

LITTLE ROCK

BITTERROOT

DARBY

CREEK TRAIL

BRIDGE

RANGER DISTRICT

NATIONAL FOREST

TRAIL 580, MP 2.87

SCALE IN FEET

0 5 10

CONTOUR INTERVAL = 1'

(PLOT SIZE = 11" x 17")

FOUNDATION PLAN

EXISTING EDGE

TRAIL, TYP

EDGE OF

WATER, TYP.

S T

A

.9

C

/L B

R G

A

B U

T 1 40.00'

CL BEARING TO CL BEARING

S T

A

.9

C

/L B

R G

A

B U

T

NC

R

E E

K

L

IT

T L E

R O

C K

CENTERLINE

TRAIL 5

.5

.5

'2

TIMBER SILL, TYP.

1.5'1.5'

GABION

BASKET, TYP.

.5

.5

1.5' 1.5'

SECTION

SCALE: 1" = 5'

SECTION

SCALE: 1" = 5'

3'

1.5'

C/L BRG.

EXISTING

GROUND

GABION

BASKET, TYP.

TIMBER SILL

CLASS 1 SEPARATION

GEOTEXTILE AGAINST

FILL FACE. INCIDENTAL

TO ITEM 25302.

11'-0"

5" 10'-2" 5"

TIMBER SILL EXISTING

GROUND

FILL VOIDS IN TOP 12"

OF THE GABION

BASKET WITH CIP

CONCRETE

SECTION

SCALE: 1" = 5'

11'-0"

5" 10'-2" 5"

TIMBER SILL

EXISTING

GROUND

FILL VOIDS IN TOP 12"

OF THE GABION

BASKET WITH CIP

CONCRETE

EQ EQ

1 BRIDGE SUPERSTRUCTURE AND ALL ASSOCIATED TIMBER MEMBERS SHALL BE

CONSTRUCTED ACCORDING TO USFS GLULAM STRINGER TRAIL BRIDGE STANDARD

DRAWING R6-STD-963-10.

NOTE: MATERIAL RETAINED FROM ABUTMENT EXCAVATION MAY BE USED

AS TRAIL EMBANKMENT AND BACKFILL IF IT MEETS THE SPECIFICATION

REQUIREMENTS FOUND IN FSSS 210.

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

FOREST SERV I CE

DEP AR TMENT OF AGR I CU LT

UR

E

/2

/2

4 1

:4 6 J

A C

O B

F

.0

L

IT

T

L E

R O

C K

C R

E E

K T

R A

IL

B

R

ID

G E

D E

S

IG

N \D

R A

W

IN

G S

\D W

G \S

T R

U C

T U

R A

L \2

D E

S

IG

N \7

.0

L

IT

T L

E R

O C

K C

R E

E K

T R

A

IL

B R

ID

G

E -D

E S

IG

N

.D W

G

REGION 1

NORTHERN REGION

ABUTMENT PLAN &

ELEVATION

Apr-24

R-3018

T. ELLIOTT

R. DAWE

J. ROSKE

7140.049

LITTLE ROCK

BITTERROOT

DARBY

CREEK TRAIL

BRIDGE

RANGER DISTRICT

NATIONAL FOREST

TRAIL 580, MP 2.87

PLAN

SCALE: 1/2" = 1'-0"

10'-2" TIMBER SILL LENGTH

EQ ±7'-4" EQ

'-6

SUPERSTRUCTURE,

TYP.

EDGE OF GABION

BASKET

FOUNDATION

12" DEEP

TIMBER SILL

3" TIMBER

BACKING

PLANK, TYP

TOP PLATE WASHER W/

ANCHOR BOLT, TYP. SEE

DETAIL THIS SHEET

12" DEEP

TIMBER SILL

ELEVATION

SCALE: 1/2" = 1'-0"

GABION

BASKET

TYPICAL ANCHOR

BOLT. SEE DETAIL

THIS SHEET

FILL VOIDS IN TOP 12" OF

GABION BASKET W/

CAST-IN-PLACE CONCRETE.

[INCIDENTAL TO ITEM 25302]

'-0

SEPARATION

GEOTEXTILE CLASS 1

BOTTOM STRAP WASHER

SEE DETAIL THIS SHEET

'-1

A

S S

U M

E D

H E

IG

H

T

12'-0" ASSUMED BACKING PLANK LENGTH

6" 1'-10" 1'-10" 1'-10" 1'-10" 6"1'-10"

STANDARD

PLAIN WASHER

STANDARD

HEAVY HEX NUT

3"

/4

Ø

S T

A N

D A

R D

T H

R E

A D

E D

R O

D

CL

CL

3/8" PL

13/16"Ø HOLE 4

'-4

3/8" PL

13/16"Ø

HOLE

STANDARD

HEAVY HEX NUT

TOP PLATE

WASHER

BOTTOM STRAP

WASHER

9'-8"

3" 5 SPACES @ 1'-10" CC = 9'-2" 3"

21 2"

BOTTOM STRAP WASHER DETAIL

NOT TO SCALE

1'-10"

TYPICAL

USE GABION BASKETS FABRICATED FROM

WELDED WIRE MESH (U.S. STANDARD GAGE

9). BASKETS CONSTRUCTED FROM TWISTED

WIRE MESH WILL NOT BE ALLOWED.

USE HARD, DURABLE ROCK TO FILL THE

GABIONS. IT IS ASSUMED THAT MATERIAL

WILL BE NEED TO BE IMPORTED TO THE SITE.

HOWEVER, ONSITE MATERIAL THAT MEETS

SPECIFICATIONS MAY BE USED WITH

APPROVAL OF THE CO.

GABION BASKETS

ANCHOR BOLT DETAIL

NOT TO SCALE

TOP PLATE WASHER DETAIL

NOT TO SCALE

NOTE:

1) SEE GENERAL NOTES ON SHEET 2.

SUPERSTRUCTURE

CONSTRUCTED TO

USFS STANDARDS

'-6

CL BRG

1 BRIDGE SUPERSTRUCTURE AND ALL ASSOCIATED TIMBER MEMBERS SHALL BE

CONSTRUCTED ACCORDING TO USFS GLULAM STRINGER TRAIL BRIDGE STANDARD

DRAWING R6-STD-963-10.

3" TIMBER

BACKING

PLANK, TYP

OUTLINE OF TIMBER

STEPS BEHIND BRIDGE,

SEE SHEET 9

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

FOREST SERV I CE

DEP AR TMENT OF AGR I CU LT

UR

E

/2

/2

4 1

:4 6 J

A C

O B

F

.0

L

IT

T

L E

R O

C K

C R

E E

K T

R A

IL

B

R

ID

G E

D E

S

IG

N \D

R A

W

IN

G S

\D W

G \S

T R

U C

T U

R A

L \2

D E

S

IG

N \7

.0

L

IT

T L

E R

O C

K C

R E

E K

T R

A

IL

B R

ID

G

E -D

E S

IG

N

.D W

G

REGION 1

NORTHERN REGION

APPROACH STEPS

DETAILS

Apr-24

R-3018

T. ELLIOTT

R. DAWE

J. ROSKE

7140.049

LITTLE ROCK

BITTERROOT

DARBY

CREEK TRAIL

BRIDGE

RANGER DISTRICT

NATIONAL FOREST

TRAIL 580, MP 2.87

'-0

18'-0" TOTAL STEP LENGTH

6'-0" 6'-0" 6'-0"

'-0

#6 REBAR VERT PIN

@ 24" OC MAX, TYP

#6 REBAR VERT

PIN @ 24" OC

MAX, TYP

#6 REBAR HORIZ PIN

@ EA TIE END, TYP

'-6

T Y

P U

N O

NEW TRAIL

BRIDGE

LEAVE REBAR VERT PIN

OVER FOUNDATION

SHORT

TRAIL BRIDGE

BACKING PLANK

(4) 6" STRUCTURAL

SCREWS BACKING

PLANK TO TOP TIE

BETWEEN EACH

GIRDER

APPROACH STEP PLAN

SCALE: 1/4" = 1'-0"

APPROACH STEP ELEVATION

SCALE: 1/4" = 1'-0"

11'-4" MAX MEMBER LENGTH

#6 REBAR VERT PIN

@ 24" OC MAX, TYP

#6 REBAR VERT

PIN @ 24" OC

MAX, TYP

#6 REBAR HORIZ PIN

@ EA TIE END, TYP

DEPARTURE STEP PLAN

SCALE: 1/4" = 1'-0"

DEPARTURE STEP ELEVATION

SCALE: 1/4" = 1'-0"

6'-0"6'-0"6'-0"

'-4

5 8

'-6

T Y

P U

N O

11'-4" MAX MEMBER LENGTH

6'-0"

'-0

24'-0" TOTAL STEP LENGTH

SLOPE PER

PLAN

SLOPE PER

PLAN

8" x 8" TIMBER SIDE

MEMBER, TYP

8" x 8" TIMBER SIDE

MEMBER, TYP

EQ EQ

E Q

E Q

EQ EQ

E Q

E Q

E Q

E Q

E Q

E Q

1'-0"

TYP

1'-0"

TYP

E D

G E

T

Y P

E D

G E

T

Y P

NOTES:

1. FIELD TREAT ALL FIELD DRILLED HOLES AND CUTS.

2. RECESS END OF VERT PIN REBAR 1/2 INCH BELOW TOP OF TIMBER.

3. PRE-DRILL ALL HOLES FOR REBAR PINS TO PREVENT SPLITTING.

4. INSTALL SINGLE PIECE HORIZ PINS IN LOWER COURSES BY DRIVING PIN

THROUGH TIE INTO SIDE MEMBER AND DRIVING ADJACENT SIDE MEMBER ONTO

PROTRUDING STUB END OF THE PIN.

SINGLE PIECE HORIZ PIN FOR

LOWER COURSE TIES, TYP

SINGLE PIECE HORIZ

PIN FOR LOWER

COURSE TIES, TYP

T Y

P

T Y

P

TOP DECK TOP DECK

8" x 8" TIMBER TIE

MEMBER, TYP

8" x 8" TIMBER TIE

MEMBER, TYP