CB_Bridge Replacement_Drawings.pdf

PROJECT LOCATION

SHEET OF

United States Department of Agriculture

Forest Service

1 7

RECOMMENDED BY:

APPROVED:

DISTRICT RANGER

DATE

FOREST ENGINEER

DATE

DATE

ROADS PROGRAM MANAGER

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CORNER BAY BRIDGE REPLACEMENT

ALASKA

SITKA RANGER DISTRICT

TONGASS NATIONAL FOREST

R10 ALASKA REGION

56°

VICINITY MAP

INDEX OF SHEETS

SHEET SHEET TITLE DATE

1 COVER SHEET

2 PROJECT MAP

3 TYPICAL ROAD X-SECTION

4 MODULAR BRIDGE INSTALLATION

5 BRIDGE BACKWALL DETAILS

BRIDGE WEARING SURFACE &

SIGNING DETAILS

7 LOG BRIDGE REMOVAL

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JUNEAU

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GULF OF ALASKA

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ALASKA

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CANADA

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#7624 MP 0.132

DRAWING TITLE

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

4/1 6/2

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R10

ALASKA REGION

CORNER BAY BRIDGE

REPLACEMENT

TONGASS NATIONAL

FOREST

SITKA RANGER DISTRICT

PROJECT MAP

April 16, 2020

PROJECT MAP

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PROJECT MAP

CORNER BAY

TENAKEE INLET C

H

A T

H A

M

S

T R

A I T

TENAKEE SPRINGS

REMOVE EXISTING LOG BRIDGE

TRANSPORT & INSTALL GOV'T

FURNISHED 70' MODULAR

BRIDGE

Miles

1:100000

52.50

1.25

ROCKPITS

Default

Rockpits

Bridges

Tongass_Roads

Land

Map Base

CORNER BAY MARINE

ACCESS FACILITY

(MAF)

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E

EXISTING GROUND

3' ROADBED WIDTH 5' MIN

VARIABLE SLOPE AS

DESIGNATED/STAKED

DECK MERCHANTABLE TIMBER

LIMBS, TOPS, SLASH,

CULL LOGS AND

ROADWAY EXCAVATION

EXCESS TO DEBRIS MAT

OR BENCH REQUIREMENTS

BORROW AND/OR SUITABLE ROCK EXCAVATION

PREPARED GROUND SURFACE, DEBRIS MAT

EMBANKMENT: BORROW EXCAVATION TO BE USED ONLY

AFTER ALL AVAILABLE SUITABLE EXCAVATION,

CONSTRUCTION SLASH AND DEBRIS HAS BEEN UTILIZED

2' MIN

NOTE: STUMPS SHALL BE GRUBBED AND

CONSTRUCTION SLASH/DEBRIS REMOVED AT

A MINIMUM OF 5' FROM THE CONSTRUCTION

ROAD SHOULDER

TYPICAL SIDEHILL SECTION

EXCAVATION

SUBGRADE

2' MIN

10' 5' MIN

VARIABLE CLEARING LIMITS

CLEARING, UNDISTURBED STUMPS

AND CLEARING DEBRIS, SEE NOTE 3

SUBGRADE

BORROW

TYPICAL OVERLAY SECTION

GRUBBING LIMITS 5' MIN

VARIABLE CLEARING LIMITS

ORIGINAL GROUND

VARIABLE SLOPE AS

DESIGNED/STAKED

EXCAVATION

PREPARED GROUND SURFACE,

DEBRIS MAT OR BENCH

EMBANKMENT, VARIABLE DEPTH

ROCK MATERIAL, BORROW AND/OR

SUITABLE ROCK EXCAVATION

EXCESS EXCAVATED

MATERIAL

DECK MERCHANTABLE

TIMBER TYP

TYPICAL THROUGH CUT SECTION

50' 25'

8'

R

T

O

INTERSECTION DETAILS

NOTES

1. PROFILE ELEVATIONS ARE SHOWN TO SUBGRADE.

2. CROWN TRAVELED WAY OR ROADBED 2%.

3. UNDISTURBED STUMPS AND OTHER CLEARING DEBRIS IN EMBANKMENT

AREAS MAY BE LEFT IN PLACE IF THEY DO NOT EXTEND CLOSER THAN 24"

TO ANY SUBGRADE. (REFERENCE SPEC. 201.05B)

4. UNLESS OTHERWISE INDICATED OR STAKED, ALL FILL SLOPES SHALL BE

1:1.25 AND ALL CUT SLOPES SHALL BE 1:1 OR AS SHOWN IN THE STAKING

NOTES.

5. ROAD NO. STA. TO STA. TOLERANCE CLASS FINISH METHOD

XXXX XXXX TO XXXX XXXX XXXX

XXXX XXXX TO XXXX XXXX XXXX

XXXX XXXX TO XXXX XXXX XXXX

XXXX XXXX TO XXXX XXXX XXXX

XXXX XXXX TO XXXX XXXX XXXX

XXXX XXXX TO XXXX XXXX XXXX

XXXX XXXX TO XXXX XXXX XXXX

XXXX XXXX TO XXXX XXXX XXXX

20'

16'

25' 30' 25'

25' 50' 25'

25' 50' 25'

50' 80' 50'

ROAD DESIGN SPEED = 10 MPH

ROAD DESIGN SPEED = 20 MPH

ROAD DESIGN SPEED = 30 MPH

10' TYP

5' TYP

TURNOUT/PULLOUT DETAILS

16'

DRAWING TITLE

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

4/1 6/2

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R10

ALASKA REGION

CORNER BAY BRIDGE

REPLACEMENT

TONGASS NATIONAL

FOREST

SITKA RANGER DISTRICT

TYPICAL

CROSS-SECTION

Nov 2019

Rev 1

TNF

K. CHERRY

TNF ENG

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GENERAL NOTES:

TREES TO BE CUT FOR SILL AND BACKWALL

LOGS WILL BE DESIGNATED IN THE FIELD BY

THE C.O. ATTACH BRIDGE TO SILL AS

RECOMMENDED BY THE MANUFACTURER.

ABUTMENT LOCATION AND ELEVATIONS WILL BE

STAKED IN THE FIELD BY THE C.O.

MECHANICALLY PLACED EMBANKMENT, WHEN

REQUIRED, IS CONSIDERED INCIDENTAL TO

BRIDGE INSTALLATION. PLACE IN ACCORDANCE

w/ SPECIAL ROCK EMBANKMENT & ROCK

BUTTRESS (FP-14 SECTION-252).

PROVIDE CONNECTION BETWEEN BRIDGE HALVES

IN ACCORDANCE WITH MANUFACTURER'S DESIGN,

INCLUDING DIAPHRAGMS AND ANGLE BRACES

BETWEEN GIRDERS AND RUNNING PLANKS ALONG

CENTER OF DECK.

FOR BRIDGE FURNISHED BY THE GOVERNMENT,

THE CONTRACTOR IS RESPONSIBLE FOR

REMOVAL AND TRANSPORTATION OF THE BRIDGE

FROM ITS PRESENT LOCATION.

SEE PLAN & PROFILE SHEETS FOR FISH TIMING

REQUIREMENTS.

EROSION CONTROL PLAN IS REQUIRED IF

DIRECTED BY THE C.O. (FP-14 SECTION-157).

THE BEARING PLATES SHALL

BE COMPLETELY SUPPORTED ON THE LOG SILL.

MODULAR BRIDGES

ROAD

7540CB 700.132 X

(FT)

LENGTHL-STA/

MP

FURNISHED BY

CONTR. GOV'T

THORNE BAY SORT YARD XX

PRESENT LOCATION

(IF GOV'T FURNISHED)

PLAN &

PROFILE

SHEET

DRAWING TITLE

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

4/1 6/2

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R10

ALASKA REGION

CORNER BAY BRIDGE

REPLACEMENT

TONGASS NATIONAL

FOREST

SITKA RANGER DISTRICT

MODULAR BRIDGE

INSTALLATION

Nov 2019

Rev 1

TNF

K. CHERRY

TNF ENG

BRIDGE, BACKWALL LUMBER, LOG SILLS ALL

LOCATED IN THORNE BAY SORT YARD,

PRINCE OF WALES ISLAND

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GOV'T FURNISHED TREATED TIMBER BACKWALL- LONG ENOUGH TO CONTAIN APPROACH FILL

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MECHANICALLY PLACED EMBANKMENT

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ROAD EDGE

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TOE OF FILL

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TAPER RIPRAP TO DESIGNED FILL

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FLOW

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DESIGNED FILL

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STREAM THALWEG

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MODULAR BRIDGE

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TOE OF FILL

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ROAD EDGE

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ROAD CENTERLINE

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INSTALL BRIDGE TO MATCH FINISH ROAD GRADE, CUT/FILL AS REQUIRED

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36" MIN. (W/OUT RIPRAP)

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MODULAR BRIDGE

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OBSERVED HIGH WATER MARKS/Q50

AutoCAD SHX Text MECHANICALLY PLACED EMBANKMENT, SEE (FP-14 SECTION-252). SEE (FP-14 SECTION-705.04) FOR GRADATION. PLACE ALONG STREAM BANK AS NEEDED FOR SLOPE PROTECTION WHERE REQUIRED BY THE C.O.

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PLACE BOTTOM OF GIRDER 5' MIN. ABOVE OBSERVED HIGH WATER MARKS

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EXISTING GRADE

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1" MINUS GRAVEL LEVELING COURSE

AutoCAD SHX Text GOV'T FURNISHED SILL LOGS TO BE TRANSPORTED FROM THORNE BAY SORT YARD. PROVIDE LEVEL BEARING AREAS ON TOP OF THE LOG SILLS FOR THE BEARING PLATES TO REST. THE BEARING PLATES SHALL

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EXCAVATE FOR SILL CONSTRUCTION, FILL W/ BORROW AND/OR SUITABLE ROCK EXCAVATION

AutoCAD SHX Text BACKWALLS TO BE CONSTRUCTED WITH GOV'T FURNISHED TREATED TIMBER PLANKS, TRANSPORTED FROM THORNE BAY SORT YARD. CONTRACTOR TO SUPPLY ALL NECESSARY FASTENING HARDWARE. SEE SHEET 5 FOR MORE DETAILS.

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BORROW AND/OR SUITABLE ROCK EXCAVATION

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1% (MIN) TO 5% (MAX) BRIDGE GRADE

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PLAN

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PROFILE

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BORROW AND/OR SUITABLE ROCK EXCAVATION

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PROJECT NAME

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DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

(R10)

ALASKA REGION

CORNER BAY

BRIDGE

REPLACEMENT

TONGASS NATIONAL

FOREST

SITKA RANGER DISTRICT

BRIDGE BACKWALL

DETAILS

XX/XX/XXXX

X.XXX

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RUNNING PLANK

CUPPED PLANKS WILL BE PLACED WITH THE CONVEX SIDE UP.

RECESS NAIL HEAD 3/8".

AT 3 ft SPACING THROUGHOUT LENGTH.

SPIRAL SPIKE, 2 AT PLANK ENDS. STAGGER

NOTE: ON RAINIER BRIDGES NAIL RUNNING

AND DECK PLANKS ONLY TO CROSS TIES.

RUNNING PLANK TO DECK CONNECTION

USE 60d RING SHANK OR DOUBLE

EXTEND RUNNING PLANKS TO

COVER TOP OF BACKWALL

WHERE POSSIBLE.1

-1

/2 in

1-1/2 in

WHICH TERMINATE AT END OF

CHAMFER RUNNING PLANK ENDS

BRIDGE DECK

/8 in

DECK PLANK

GENERAL NOTES

1. VERIFY BRIDGE LENGTH AND WIDTH PRIOR TO ORDERING RUNNING PLANK

MATERIALS.

2. NEW RUNNING PLANKS SHALL BE UNTREATED DOUG FIR, HEMLOCK,

OR SITKA SPRUCE, No. 2 or BETTER, ROUGH FINISH 3" X 12".

3. ALL HARDWARE SHALL BE GALVANIZED.

4. CLEAN DECK SURFACE OF ROCKS, SAND, DIRT, AND OTHER MATERIAL PRIOR TO

REMOVING EXISTING PLANKS AND INSTALLATION OF NEW RUNNING PLANKS.

PRESSURE WASHING IS NOT AN ACCEPTABLE MEANS OF CLEANING A BRIDGE.

MATERIAL REMOVED FROM A BRIDGE WILL BE DEPOSITED AWAY FROM ANY LIVE

STREAM AS DIRECTED BY THE ENGINEER.

5. STAGGER BUTT JOINTS BETWEEN SUCCESSIVE RUNNING PLANKS.

6. PRESERVATIVE TREATMENT SHALL BE COPPER NAPTHENATE. TREAT MATERIAL IN

ACCORDANCE WITH AWPA C1 AND C2 ABOVE GROUND USE.

7. TREAT ALL FIELD DRILLED HOLES IN ACCORDANCE WITH AWPA M4.

8. DISPOSE OF EXCESS AND WASTE MATERIALS OFF FOREST SERVICE LAND.

9. MINIMUM LENGTH OF PLANK IS 10 FEET.

10. LEAVE 4"-6" GAP BETWEEN OUTSIDE PLANKS AND TREATED CURBING.

COVER BACKWALL IF POSSIBLE

CURB, OR BRIDGE END.

POSSIBLE TO BRIDGE PARAPET,

INSTALLED AS CLOSE AS

OBJECT MARKER IS TO BE

GUARD RAIL

4"x4"x9'-0" POST

INSIDE OF RAIL ELEMENT

TO BE FLUSH WITH THE

EDGE OF MARKER PLATE

CENTERLINE

ROADWAY12"

V

A R

I E

S

BRIDGE

1"

2"

SCALE:

B

OBJECT MARKER

M.U.T.C.D. TYPE 3

NTS

SCALE:

A

BRIDGE WEARING SURFACE

NTS

70' MODULAR BRIDGE WEARING SURFACE & OBJECT MARKER NOTES:

1. CONTRACTOR SHALL CHAMFER CUT ALL ENDS OF EXISTING BRIDGE WEARING

SURFACE AS SHOWN IN DETAIL A3 THIS SHEET.

2. CONTRACTOR MUST SUPPLY & INSTALL (4) NEW BRIDGE OBJECT MARKERS &

POSTS / HARDWARE AS SHOWN IN DETAIL B3 THIS SHEET. CONTRACTOR

SUPPLIED OBJECT MARKERS WILL BE CONSIDERED INCIDENTAL TO THE

INSTALLATION OF THE MODULAR BRIDGE PAY ITEM AND NO ADDITIONAL PAYMENT

WILL BE MADE.

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

R10

ALASKA REGION

CORNER BAY

BRIDGE

REPLACEMENT

TONGASS NATIONAL

FOREST

SITKA RANGER DISTRICT

BRIDGE WEARING

SURFACE & OBJECT

MARKER DETAILS

XX/XX/XXXX

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DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

(R10)

ALASKA REGION

CORNER BAY

BRIDGE

REPLACEMENT

TONGASS NATIONAL

FOREST

SITKA RANGER DISTRICT

LOG BRIDGE REMOVAL

04/10/2020

X.XXX

X.XXX

X.XXX

7 7

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TYPICAL TOP VIEW

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BROW LOG

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SILL LOG

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ROAD SURFACE

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NOT TO SCALE

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STINGER

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STRINGER

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CABLE WRAP

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TYPICAL SIDE VIEW

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STINGER

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BROW LOG

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CABLE WRAP

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STRINGER

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SILL LOG

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NOT TO SCALE

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ROAD SURFACE

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TERRACE MIN. 3 FT. WIDE

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NOT TO SCALE

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TYPICAL TOP VIEW

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TYPICAL SIDE VIEW

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NOT TO SCALE

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PLACEMENT OF EXCAVATED

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ROADBED MATERIAL

AutoCAD SHX Text REMOVE ALL CABLE, STAPLES AND OTHER HARDWARE. HAUL AND DECK MERCHANTABLE TIMBER TO LOCATION DESIGNATED BY THE CO.

AutoCAD SHX Text AFTER REMOVING ALL HARDWARE DECK UNMERCHANTABLE TIMBER ON DOWNHILL SIDE OF ROAD AT LOCATION DESIGNATED BY THE CO.

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GRASS SEED AND FERTILIZE ALL EXCAVATED AREAS.

AutoCAD SHX Text DISPOSAL OF ALL CABLE, STAPLES AND OTHER HARDWARE USING METHOD (a), SUBSECTION 203.05

AutoCAD SHX Text ROADFILL TO BE EXCAVATED A MINIMUM WIDTH OF 2' BEYOND NATURAL STREAM CHANNEL ON BOTH SIDES. SLOPES TO BE LAID BACK TO 2(H):1(V)

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