Plan Set - Diamond Creek Falls TrailBridge.pdf

DIAMOND CREEK FALLS TRAIL

BRIDGE PROJECT LOCATION

United States Department of Agriculture

Forest Service

OREGON

LANE COUNTY

(R06) PACIFIC NORTHWEST

WILLAMETTE NATIONAL FOREST

MIDDLE FORK RANGER DISTRICT

GAOA DIAMOND CREEK

FALLS TRAIL BRIDGE

TRAIL 3598 - M.P. 0.1

T23S R55E SECTION 05 (LAT. 43.608000, LONG. -122.1445833)

INDEX OF SHEETS

SHEET SHEET TITLE

TITLE & VICINITY MAP

PREFABRICATED STEEL GIRDER TRAIL BRIDGE 1 (REGION

6 STANDARD)

PREFABRICATED STEEL GIRDER TRAIL BRIDGE 2 (REGION

6 STANDARD)

PREFABRICATED STEEL GIRDER TRAIL BRIDGE 3 (REGION

6 STANDARD)

TYPICAL SECTION, DECK & RAIL DETAILS

BRIDGE PLAN & ELEVATION

ABUTMENT 1 DETAILS

ABUTMENT 1 STAIR DETAILS

ABUTMENT 2 STAIR DETAILS

STAIR CONNECTION DETAILS

STAIR STRINGER DETAILS

SHEET OF1 11

RECOMMENDED BY:

BRANDON GREEN, ZONE ENGINEER, MIDDLE FORK & MCKENZIE RD

WALT HISLOP, PE, SREO ENGINEER

REVIEWED BY:

SREO = REGION 6, SUB REGIONAL

ENGINEERING ORGANIZATION

PROJECT LOCATION

p p o o o o o o97 o58

PROJECT

SITE

WESTERN OREGON INDEX MAP

THE

DALLES

PORTLAND

SALEM

NEWPORT

FLORENCE

CORVALLIS

EUGENE

TILLAMOOK

BEND

5COOS

BAY

GRANTS

PASS

ROSEBURG 97

MEDFORD

JOSH LATHAM, DEVELOPMENT ENGINEER, SREO

TO EUGENE, OR - APPROX. 60 MILES

VICINITY MAP

NOT TO SCALE

MOLLY JUILLERAT, DISTRICT RANGER, MIDDLE FORK RD

DESIGNED BY:

COLE SMITH, PE, STRUCTURAL ENGINEER, SREO

TO HWY 97 -

APPROX. 30 MILES

SUPPLY CONTRACT INCLUDES DESIGN, FABRICATION AND

DELIVERY OF THE FOLLOWING ITEMS:

- STEEL BRIDGE SUPERSTRUCTURE/DIAPHRAGMS/BEARINGS

- TIMBER DECKING

- LOG TIMBER BRIDGE RAILING/RAIL POSTS

- TIMBER STAIR STRINGERS

- TIMBER STAIR TREADS

- LOG STAIR TIMBER RAILING/RAIL POSTS

- TIMBER STAIR SILLS

- TIMBER BACKWALL MEMBERS

- ALL ASSOCIATED FASTENERS, CONNECTING HARDWARE AND

INCIDENTALS REQUIRED TO ASSEMBLE THE TRAIL BRIDGE

SUPERSTRUCTURE, TRAIL BRIDGE DECKING/RAILING, STAIRS/

RAILING AND STAIR SILLS AS SHOWN ON THIS PLAN SET.

ITEMS NOT INCLUDED IN THE SUPPLY CONTRACT:

- GABION BASKETS AND GABION ROCK

- CONCRETE GRADE BEAMS

- ALL CONNECTING HARDWARE FOR GABIONS AND GRADE BEAM

AutoCAD SHX Text

NORTH

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colesmith Rectangle

2000 LBS 8000 LBS

H-5 VEHICLE LOADING DIAGRAM*

DESIGN HIGH WATER

INSIDE FACE OF

CURB OR RUB RAIL

6'-0"

14'-0"

- MAXIMUM GRADE ℄ BEARING TO ℄ BEARING = 5%

- RUNNING PLANKS AND DECK PLANKS NOT SHOWN FOR CLARITY

RAILING SYSTEM.

SEE PROJECT CRITERIA ABOVE

CLEARANCE

SUBSTRUCTURE SHOWN

FOR ILLUSTRATION ONLY.

SEE ABUTMENT DETAILS

RIPRAP ARMOR (TYP) AT

ABUTMENTS WHERE REQUIRED

(NOT REQUIRED FOR THIS

PROJECT)

NOT TO SCALE

ELEVATION

NOT TO SCALE

*REQUIRED FOR CLEAR WIDTHS OF 7'-0" OR MORE

DEFINE CRITERIA FOR OTHER VEHICLES TO BE CONSIDERED

DURING DESIGN BY WEIGHT, AXLES OR TRACKS, LENGTH,

WIDTH, MODEL NO.,AND OTHER PERTINENT INFORMATION.

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.DATE

PROJECT NO.

DRAWING SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

2/1 9/2

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R06

PACIFIC NORTHWEST REGION

PREFABRICATED

STEEL GIRDER

TRAIL BRIDGE

REGIONAL STANDARD

R6_STD-964-20

PREFABRICATED STEEL

TRUSS TRAIL BRIDGE

PLANNING AND

CRITERIA

K.VAN HECKE

S.WEISNER/KLV

E.ANTRIM

APPROVED BY: R6 DIRECTOR OF ENGINEERING

STRINGERS DIAPHRAGMS DECK RAILING

STRUCTURE

NUMBER TRAIL NO.

BRIDGE

LOCATION

(MP)

BRIDGE

LENGTH

C-C BRNG

BRIDGE SPAN

OUT-TO-OUT

BRIDGE

CLEAR

WIDTH

PEDESTRIAN

LOAD

GROUND

SNOW

LOAD

MATERIAL

STRENGTH SIZE WEATHERING

STEEL/COATING MATERIAL UTILITY

SUPPORT? MATERIAL SPECIES SIZE

TREATMENT

(Y/N) & TYPE CONFIGURATION MATERIAL SPECIES

TREATMENT

(Y/N) & TYPE

X 3598 0.1 61'-0" 62'-0" 3'-0" 90 PSF 258 PSF 50 KSI

YIELD

PER

FABRICATOR

DESIGN

WEATHERING

STEEL

NO

X X X X X X X

DIAPHRAGM/DECK/RAILING MATERIAL: ST=STEEL, SS=SOLID SAWN, GLU=GLULAM, COMP=COMPOSITE TIMBER, NP=NATIVE POLES (MATERIAL WHERE APPROPRIATE)

RUNNING PLANK ABUTMENT BACKWALL APPROACHES

STRUCTURE

NUMBER SPECIES SIZE WIDTH

TREATMENT

(Y/N) & TYPE MATERIAL SIZE

TREATMENT

(Y/N) & TYPE MATERIAL SPECIES SIZE WIDTH HEIGHT

TREATMENT

(Y/N) & TYPE

LENGTH

WIDTH MATERIAL

TYPE

MATERIAL

DEPTH

GEO-

SYNTHETIC

TYPE

COMMENTS

NEAR FAR

X NONE CONC 2' X 1.5' N DF DETAILS ON SHEET 11SS

X X X X X

ABUTMENT MATERIAL TYPE: SS = SOLID SAWN, GLU = GLULAM, CONC = CONCRETE BACKWALL MATERIAL SS = SOLID SAWN, GLU = GLULAM, CONC = CONCRETE APPROACH MATERIAL: N = NATIVE/AGGREGATE, ACWS=ASPHALT WEARING SURFACE

CHRISTY DARDEN

Digitally signed by CHRISTY

DARDEN

Date: 2021.03.12 11:03:20 -08'00'

ST SS NOCEDAR 4X12 POST W/ 3 RAILS CEDARNP N

NATIVE APPROACHES PER TRAIL CREW DESIGNY - COPPER

NAPTHENATE

GENERAL NOTES:

DESIGN : AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, CURRENT EDITION AND AASHTO LRFD GUIDE SPECIFICATIONS FOR THE DESIGN OF

PEDESTRIAN BRIDGES, CURRENT EDITION, EXCEPT AS NOTED.

CONSTRUCTION: STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY

PROJECTS (FP-14) AND STANDARD SPECIFICATIONS FOR CONSTRUCTION OF TRAILS AND TRAIL BRIDGES ON FEDERAL PROJECTS., PREFABRICATED STEEL BRIDGE SUPERSTRUCTURE: PREFABRICATED STEEL SUPERSTRUCTURE DESIGN MUST BE A STEEL GIRDER CONFIGURATION SIMILAR TO

THAT SHOWN ON THE DRAWINGS. MAINTAIN THE CLEARANCES ABOVE HIGH WATER TO THE BOTTOM FLANGE OF THE GIRDER AS INDICATED ON THE BRIDGE

ELEVATION. FOR THE CONTRACTOR PROPOSED CROSS-SECTION, PROVIDE THE WIDTH AND RAILING DETAILS INDICATED ON THE BRIDGE TYPICAL SECTION, AND

DETERMINE GIRDER NUMBER AND SIZE OF GIRDERS. AFTER APPROVAL BY THE CO, FINALIZE CONSTRUCTION OF THE SELECTED STRUCTURE, AND ENSURE THAT

RELATED DETAILS SUCH AS PROFILE, ABUTMENT DETAILS, BEARINGS, AND DECKING ARE CONSIDERED AND INCLUDED IN THE DESIGN AND CONSTRUCTION.

DESIGN THE PREFABRICATED STEEL BRIDGE SUPERSTRUCTURE AND ASSOCIATED DETAILS INCLUDING TIMBER COMPONENTS, UNDER THE DIRECTION OF A

REGISTERED PROFESSIONAL ENGINEER. SUBMIT THE COMPLETED DESIGN, DRAWINGS, AND SPECIFICATION PACKAGE TO THE CONTRACTING OFFICER FOR

REVIEW AND APPROVAL.

PROVIDE CAMBER FOR 100% OF THE FULL DEAD LOAD DEFLECTION PLUS 1% OF BRIDGE SPAN. SUBMIT SHOP DRAWINGS AND CALCULATIONS FOR APPROVAL

BEFORE FABRICATION.

ERECTION PLAN : SUBMIT AN ERECTION PLAN FOR THE PREFABRICATED STEEL BRIDGE SUPERSTRUCTURE TO THE C.O. FOR APPROVAL 14 DAYS BEFORE ERECTION

IS SCHEDULED. IF ALLOWED UNDER THE PROJECT DESIGN CRITERIA, TEMPORARY IN-STREAM SUPPORT BENTS MAY BE USED FOR THE ERECTION OF THE

PREFABRICATED STEEL TRUSS BRIDGE. CONSTRUCT TEMPORARY IN-STREAM BENTS USING UNTREATED TIMBER CRIBBING, SILLS, CONCRETE BLOCKS OR OTHER

SUPPORTS THAT ARE PLACED WITH MINIMAL DISTURBANCE WITHIN THE STREAM. REMOVE ALL MATERIALS USED TO CONSTRUCT THE TEMPORARY IN-STREAM

BENTS. SUBMIT DRAWINGS INDICATING TEMPORARY BENT LOCATIONS AND DETAILS. INDICATE THE EQUIPMENT AND METHODS PROPOSED TO INSTALL AND

REMOVE THE TEMPORARY BENTS AND ERECT THE NEW PREFABRICATED STEEL GIRDER SUPERSTRUCTURE.

TIMBER FABRICATION: SUBMIT SHOP DRAWINGS FOR ALL TIMBER BRIDGE COMPONENTS (EXCEPT TIMBER RUNNING PLANKS). SHOW ALL DIMENSIONS AND FABRICATION DETAILS FOR ALL CUT OR BORED TIMBER. INDICATE ON SHOP DRAWINGS WHERE FIELD DRILLING OF HOLES IS REQUIRED OR

RECOMMENDED.

FIELD TREATMENT: FURNISH COPPER NAPHTHENATE (2% SOLUTION) FOR FIELD TREATING OF WOOD. FOR FIELD TREATING ALL ABRASIONS AND FIELD

CUTS - AS APPROVED BY THE CONTRACTING OFFICER - CAREFULLY TRIM MEMBERS AND TREAT USING THREE BRUSH COATS OF THE FIELD

TREATMENT SOLUTION. WHERE APPROVED FIELD DRILLING OF BOLT OR NAIL HOLES IS REQUIRED OR ALLOWED, FILL THE HOLES WITH

PRESERVATIVE PRIOR TO INSERTING THE FASTENERS.

MATERIALS:

STEEL: USE STEEL GIRDERS, SHAPES, PLATES AND BARS OF WEATHERING STEEL CONFORMING TO AASHTO M270, GRADE 50W (ASTM A588 OR ASTM A242) .MINIMUM

STEEL THICKNESS SHALL BE AS SPECIFIED IN THE GUIDE SPECIFICATIONS FOR DESIGN OF PEDESTRIAN BRIDGES. USE HIGH STRENGTH BOLTS CONFORMING TO

AASHTO M164, (ASTM F3125, GRADE A325), TYPE 3, UNLESS NOTED OTHERWISE. USE MALLEABLE IRON WASHERS AGAINST WOOD.

STEEL FABRICATION: FABRICATE THE PREFABRICATED STEEL BRIDGE SUPERSTRUCTURE IN A PLANT MEETING QUALITY REQUIREMENTS AS A CERTIFIED STEEL

FABRICATOR BY AISC. WELD STRUCTURAL STEEL IN ACCORDANCE WITH AWS D1.5 AND SUITABLE FOR THE GRADE OF STEEL AND INTENDED USE OR SERVICE.

TREATMENT: SEE PROJECT CRITERIA FOR MEMBERS IDENTIFIED TO BE TREATED AND FOR TREATMENT TYPE. TREAT MEMBERS IN ACCORDANCE

WITH THE CURRENT AMERICAN WOOD PROTECTION ASSOCIATION (AWPA) SPECIFICATIONS USING THE TREATMENT TYPES AND CLASSIFICATIONS

LISTED BELOW AND IN COMPLIANCE WITH THE REQUIREMENTS OF THE CURRENT EDITION OF WESTERN WOOD PRESERVERS INSTITUTE (WWPI)

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

BACKING PLANKS, CRIBS & STAIR STRINGERS

- AWPA USE CATEGORY SYSTEM (U1) FOR USE CATEGORY 4B GROUND CONTACT - HEAVY DUTY (UC4B)

- PENTACHLOROPHENOL IN HEAVY OIL (TYPE A SOLVENT)

- COPPER NAPHTHENATE (CuN) IN HEAVY OIL (TYPE A SOLVENT)

SPECIFICATIONS:

TIMBER & LUMBER:

SOLID SAWN TIMBER: CONFORM TO THE REQUIREMENTS OF THE GRADING RULES AGENCY FOR THE SPECIES, TYPE, AND GRADE

SPECIFIED BELOW. UNLESS SHOWN OTHERWISE, ACCEPTABLE GRADING RULES AGENCIES ARE WWPA OR WCLIB.

DECKING

ALASKA YELLOW OR WESTERN RED CEDAR, FULL ROUGH SAWN NO. 2

RAILS, POSTS (SEE PROJECT CRITERIA)

· ROUND POLES: ALASKA YELLOW OR WESTERN RED CEDAR

M

I N

4" TO 6" Ø CEDAR LOG RAILING

CONNECTED WITH 5/8" Ø BOLT AND

NUT. LOCATE BOLT HEAD AT FACE

OF RAIL. PROVIDE BOLT LENGTH AS

NEEDED PER POST AND RAIL

DIAMETER. SEE DETAIL ON SHEET 5

BLOCKING AS REQUIRED

3'-0" CLEAR WIDTH

1'-6"

(TYP)

STRUCTURE

DIAPHRAGM BY FABRICATOR

IN ACCORDANCE WITH

PROJECT CRITERIA AND

FABRICATOR DESIGN

STRINGER

STRINGER

BRIDGE TYPICAL SECTION

4X12 CEDAR DECKING FASTENED

TO TOP OF GIRDER FLANGE PER

TYPICAL DECK PLANK

CONNECTION DETAIL ON SHEET 5

3'-8"

SPACING AND NUMBER OF

GIRDERS IN ACCORDANCE

WITH PROJECT CRITERIA AND

FABRICATOR DESIGN.

"Ø BOLT X (VERIFY LENGTH)

W / NUT AND (2)-OVERSIZED

MALLEABLE IRON WASHERS

M

I N

3 1/2"

6" TO 8" Ø CEDAR LOG POSTS

WITH BEVELED ENDS, TYP. AND

W/ (2) 13/16" Ø HOLES AT

BOTTOM

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

7/1 4/2

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PACIFIC NORTHWEST REGION

PREFABRICATED

STEEL GIRDER

TRAIL BRIDGE

REGIONAL STANDARD

R6_STD-964-20

TYPICAL SECTION,

GENERAL NOTES, AND

FOUNDATION

PROTECTION

2/10/2021

K.VAN HECKE

S.WEISNER/KLV

E.ANTRIM

-02 02 03

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TYPICAL SECTION

1'-8"

BEARING DETAIL

NOTES:

ELEVATION - GRADE BEAM

CONCRETE: USE CLASS A(AE) OR CLASS P(AE) FOR CONCRETE, f'c = 4500 PSI AT 28 DAYS WITH AN ENTRAINED AIR CONTENT

OF 5% ±1% OR AS REQUIRED BY THE DESIGN. PROVIDE ALL CONCRETE IN ACCORDANCE WITH AN APPROVED MIX DESIGN.

CHAMFER ALL EXPOSED EDGES OF CONCRETE 3/4-INCH.

REINFORCING STEEL: USE REINFORCING STEEL OF THE DEFORMED TYPE CONFORMING TO AASHTO M31 (ASTM A615), GRADE 60. WITH CONCRETE COVER AS SHOWN OR A MINIMUM OF 2 INCHES WHERE NOT SHOWN, IN CONFORMANCE WITH

AASHTO SPECIFICATIONS. CUT AND BEND STEEL IN ACCORDANCE WITH ACI 315.

CONCRETE GRADE BEAM: DETAILS SHOWN ON THIS SHEET PROVIDE MINIMUM SIZES AND REQUIREMENTS. PREPARE AND

SUBMIT COMPLETE GRADE BEAM DETAILS SPECIFIC TO THE BRIDGE DESIGN WITH THE PROPOSED SUPERSTRUCTURE

DESIGN AND SHOP DRAWINGS.

FOUNDATION ANALYSIS: ABUTMENT 1 IS FOUNDED ON COBBLES AND GRAVELS WITH AN ESTIMATED NOMINAL BEARING

CAPACITY OF 6000 PSF. ABUTMENT 2 IS FOUNDED ON SOLID ROCK WITH AN ESTIMATED NOMINAL BEARING CAPACITY OF

20,000 PSF.

TIMBER BACKING

PLANKS, SEE SHEET 11

STRUCTURE

(2)-ANCHOR BOLTS MINIMUM AT

EACH BEARING LOCATION

BACKWALL AND

CONNECTION

DETAILS ON SHEET

(4)-#6 CONTINUOUS

TOP AND BOTTOM

*12" ANCHOR

#4 HOOPS

#4 CONTINUOUS EACH FACE

OUT-TO-OUT CONCRETE GRADE BEAM

(BRIDGE TOTAL WIDTH + 3'-0")

SPACE #4 HOOPS @ 12" ±

3" 3"

BACKING PLANKS

DECK PLANKS

GIRDER

BOTTOM FLANGE

OF GIRDER

BEARING

PLATE

GRADE BEAM

ATTACH BACKING PLANK

TO SUPERSTRUCTURE

ELASTOMERIC BEARING PAD

(50 DUROMETER) AS

REQUIRED, OR GROUT

LEVELING PAD AS NEEDED

SLOPE TOP SURFACE OF GRADE BEAM AS

REQUIRED FOR UNIFORM BEARING. VERIFY

CONFIGURATION WITH BRIDGE FABRICATOR.

(2)-3/4"Ø a307 ANCHOR BOLTS AT EACH BEARING LOCATION

MINIMUM. EMBED 12" MINIMUM INTO GRADE BEAM.

PLACEMENT AND THREADED PROJECTION BY OTHERS.

(4)-#6 CONTINUOUS

EQUALLY SPACED

#4 HOOPS @

12" ±

#4

CONTINUOUS

AT EACH FACE

4 1/2"

(4)-#6 CONTINUOUS

EQUALLY SPACED

2'-0"

T H

R E

A D

P R

O J E

C T

I O

N

* 12" CAST-IN-PLACE ANCHOR OR 7" EPOXY ANCHOR WHEN

APPROVED BY CO OR AS REQUIRED BY DESIGN

NOT TO SCALE

3" CLEAR FROM BOTTOM OF SILL CAST

AGAINST EARTH TO REINFORCEMENT.

2" CLEAR ALL OTHER LOCATIONS OR

FOR PRECAST SILLS.

1'-0" MIN EMBEDMENT

RAILING NOT SHOWN FOR CLARITY

BRIDGE TOTAL WIDTH

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

7/1 4/2

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R06

PACIFIC NORTHWEST REGION

PREFABRICATED

STEEL GIRDER

TRAIL BRIDGE

REGIONAL STANDARD

R6_STD-964-20

BEARING AND

SUBSTRUCTURE

DETAILS

2/1/2021

K.VAN HECKE

S.WEISNER/KLV

E.ANTRIM

-03 03 03

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NOT TO SCALE

TYPICAL DECK PLANK CONNECTION

3/4" ± 1/4"

3 1/2"

TOP FLANGE OF

STEEL GIRDER

2" TYP.

2" TYP.

4X12 DECK

PLANK

ELEVATION

1/4" Ø X 6" LENGTH A307

CARRIAGE BOLTS WITH

STD. WASHER, THEN

LOCK WASHER AND NUT

THROUGH PRE-DRILLED

HOLES IN TOP FLANGE

3/4" CHAMFER, TYP.

COUNTERSINK CUT

WASHER

DAP POST TO MATCH

RAIL DIAMETER, 1/2" MAX.

5/8" Ø TIMBER BOLT.

COUNTERSINK HEAD

FOR FULL BEARING

NOT TO SCALE

RAIL DETAIL

ELEVATION - RAIL ATTACHMENT

PLAN - RAIL SPLICE

8" TYP.

HALF LAP RAILS,

TYP. AT SPLICES

5/8" Ø TIMBER BOLT AND

NUT. LOCATE BOLT HEAD

AT FACE OF RAIL

TIMBER

RAIL, TYP.

RAIL POST, TYP.

CUT WASHER, TYP.

COUNTERSINK FOR

FULL BEARING

C

POST, BOLT

& SPLICE

L

PROJECT NAME

United States Department of Agriculture Forest Service

OFSHEET

5 11

WILLAMETTE NATIONAL

FOREST

REVISION / ISSUENO. DATE

STAMPS, LOGOS, AND SEALS

REGION 6

PACIFIC NORTHWEST REGION

C. SMITH

C. SMITH

N/A2/1/2022

DATE

ARCHIVE NO.

DESIGNER

DRAWN

CHECKED

PROJECT NO.

DRAWING SHEET NO.

N/A

DRAWING TITLE

DECK & RAIL DETAILS

MIDDLE FORK

RANGER DISTRICT

DIAMOND

CREEK FALLS

TRAIL BRIDGE

J. LATHAM

TIMBER BACK WALL.

SEE DETAILS ON

SHEET 11

PLAN

3" TYP. FROM EDGE

OF GIRDER FLANGE

7 1/4" TYP.

2" TYP.

4X12 DECK

PLANK

TOP FLANGE OF

STEEL GIRDER, TYP.

5/16" Ø PRE-DRILLED HOLES AS SHOWN FOR DECK PLANK

ATTACHMENT TO BE DRILLED BY BRIDGE FABRICATOR

PRIOR TO DELIVERY TO THE PROJECT SITE

STEEL

GIRDER

ENDS

FASTEN END DECK PLANK TO

TIMBER BACKWALL WITH (2) X

5/16" Ø X 7" GRK RSS

STRUCTURAL SCREWS (OR

APPROVED EQUAL), AS SHOWN

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PROJECT NAME

United States Department of Agriculture Forest Service

OFSHEET

6 11

WILLAMETTE NATIONAL

FOREST

REVISION / ISSUENO. DATE

STAMPS, LOGOS, AND SEALS

REGION 6

PACIFIC NORTHWEST REGION

C. SMITH

C. SMITH

N/A2/1/2022

DATE

ARCHIVE NO.

DESIGNER

DRAWN

CHECKED

PROJECT NO.

DRAWING SHEET NO.

N/A

DRAWING TITLE

BRIDGE PLAN &

ELEVATION

MIDDLE FORK

RANGER DISTRICT

DIAMOND

CREEK FALLS

TRAIL BRIDGE

J. LATHAM

61'-0 " C

ENTERLIN

E BEARIN

G TO C

ENTERLIN

E BEARIN

G

EXISTING GROUND AT NEW

BRIDGE CENTERLINE

BRIDGE ELEVATION

Q100 FLOW (424 CFS)

ELEVATION

4'-3" FREEBOARD

OVER Q100 FLOW

NEW TRAIL SURFACE

GABION FOUNDATION.

SEE DETAILS ON SHEET 8

PRE-ENGINEERED, PREFABRICATED STEEL GIRDER SUPERSTRUCTURE.

FABRICATE EACH GIRDER IN 3 SECTIONS (FOR TRANSPORT PURPOSES)

TO BE SPLICED IN THE FIELD AT THE BRIDGE SITE.

1'-0 " T

YP.

BOTH

ENDS

3.3

NEW TRAIL SURFACE

0' 2' 4'2'

SCALE IN FEET

CONCRETE FOUNDATION

ON SOLID ROCK. SEE

DETAILS ON SHEET 5

5'-0", MAX,

TYP.

C ABUTMENT 1

L

C ABUTMENT 2

L

C BEARING ABUTMENT 2 TO

BE FIELD STAKED BY CO

L

5'-0", MAX,

TYP.

DIAMOND

CREEK FLOW

61'-0" CENTERLINE BEARING TO CENTERLINE BEARING

BRIDGE PLAN

REINFORCED CONCRETE

ABUTMENT, TYP. SEE

DETAILS ON SHEET 5

EDGE OF CREEK

C BEARING ABUTMENT 1 TO

BE FIELD STAKED BY CO

L

0' 2' 4'2'

SCALE IN FEET

BACKWALL AND STAIR CONNECTION,

TYP. SEE DETAILS ON SHEET 11

ABUTMENT 1 STAIRS. SEE

DETAILS ON SHEET 9

ABUTMENT 1 STAIRS. SEE

DETAILS ON SHEET 9

GABION FOUNDATION.

SEE DETAILS ON SHEET 8

ABUTMENT 2 STAIRS. SEE

DETAILS ON SHEET 9

DIAMOND CREEK

ABUTMENT 2 STAIRS. SEE

DETAILS ON SHEET 9

PRE-ENGINEERED, PREFABRICATED STEEL GIRDER SUPERSTRUCTURE.

FABRICATE EACH GIRDER IN 3 SECTIONS (FOR TRANSPORT PURPOSES)

TO BE SPLICED IN THE FIELD AT THE BRIDGE SITE.

SPLICED GIRDER CONNECTION (AT 2 LOCATIONS, TYP.)

PER MANUFACTURER'S DESIGN

SUPPLY CONTRACT NOTE:

ITEMS TO BE FURNISHED UNDER THE SUPPLY CONTRACT ARE THE FOLLOWING: 1)

STEEL BRIDGE SUPERSTRUCTURE 2) TIMBER DECKING 3) TIMBER RAILING 4)

TIMBER STAIR STRINGERS 5) TIMBER STAIR TREADS 6) TIMBER STAIR STRINGER

SILL 7) TIMBER STAIR RAILING 8) ALL FASTENERS, DIAPHRAGMS, BLOCKING,

CONNECTION HARDWARE & INCIDENTALS NEEDED TO CONSTRUCT THE BRIDGE

AND STAIR STRUCTURES AS SHOWN ON THIS PLAN SET.

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Forest Service

OFSHEET

7 11

WILLAMETTE NATIONAL

FOREST

REVISION / ISSUENO. DATE

STAMPS, LOGOS, AND SEALS

REGION 6

PACIFIC NORTHWEST REGION

C. SMITH

C. SMITH

N/A2/1/2022

DATE

ARCHIVE NO.

DESIGNER

DRAWN

CHECKED

PROJECT NO.

DRAWING SHEET NO.

N/A

DRAWING TITLE

ABUTMENT 1 DETAILS

MIDDLE FORK

RANGER DISTRICT

DIAMOND

CREEK FALLS

TRAIL BRIDGE

J. LATHAM

ABUTMENT 1 ELEVATION

NOT TO SCALE

9'-0"

EXISTING

GROUND, TYP.

BACKFILL PER

GABION

FOUNDATION

NOTE #5, TYP.

METAL STRAP. SEE

DETAIL, THIS SHEET

OUT-OUT WIDTH OF GIRDERS

PLACE GABION BASKET ON

UNDISTURBED GROUND.

GABION FOUNDATION

CONCRETE GRADE BEAM. SEE

DETAILS ON SHEET 5

GABION ANCHOR. SEE

DETAIL ON THIS SHEET

STEEL BRIDGE GIRDER

3'-0"

SECTION A-A

NOT TO SCALE

A

A

GABION FOUNDATION NOTES:

1. GABION BASKETS SHALL BE CONSTRUCTED USING WIRE MESH (U.S. STANDARD

GAGE 9). BASKETS CONSTRUCTED USING TWISTED WIRE MESH WILL NOT BE

ALLOWED.

2. MATERIAL USED TO FILL GABION SHALL BE 4-INCH TO 8-INCH ROCK CONFORMING

TO FP-14 SPECIFICATION 705.01

3. GABION ROCK MUST BE PLACED SO THAT IT IS TIGHTLY PACKED WITH A MINIMUM

OF VOIDS

4. ALL GABIONS SHALL BE PLACED ON UNDISTURBED SOIL

5. BACKFILL WITH SUITABLE ON SITE MATERIAL BEHIND GABIONS CONCURRENTLY

WITH THE CELL FILLING OPERATION TO MATCH THE EXISTING CONTOURS.

COMPACT MATERIAL WITH A HAND TAMPER UNTIL THERE IS NO VISIBLE

DEFLECTION.

6"

ELEVATION - GABION

ANCHOR DETAIL

NOT TO SCALE

HEAVY HEX NUT

MALLEABLE IRON WASHER

3/4" Ø STD

THREADED ROD

1/4"

METAL STRAP℄

3/4"1 1/2"

1 1/2" x 1/4" x 6'-0"

METAL STRAP

NOT TO SCALE

CENTERLINE BRIDGE &

ABUTMENT

CENTERLINE BEARING &

ABUTMENT

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Forest Service

OFSHEET

8 11

WILLAMETTE NATIONAL

FOREST

REVISION / ISSUENO. DATE

STAMPS, LOGOS, AND SEALS

REGION 6

PACIFIC NORTHWEST REGION

C. SMITH

C. SMITH

N/A2/1/2022

DATE

ARCHIVE NO.

DESIGNER

DRAWN

CHECKED

PROJECT NO.

DRAWING SHEET NO.

N/A

DRAWING TITLE

ABUTMENT 1 STAIR

DETAILS

MIDDLE FORK

RANGER DISTRICT

DIAMOND

CREEK FALLS

TRAIL BRIDGE

J. LATHAM

7" MAX STEP HEIGHT

ONTO FIRST STEP

EXCAVATE EXISTING

TRAIL AS NEEDED TO

CONSTRUCT STAIRS

AS SHOWN

8X12 X 5'-0" PT DF/L TIMBER SILL.

PLACE AND COMPACT 6" OF ON

SITE ROCK (3" MINUS) UNDER

THE SILL FOR DRAINAGE

SEE STAIR TREAD

DETAIL ON SHEET 11

SEE STAIR STRINGER TO SILL

CONNECTION. SEE DETAIL ON SHEET 11

4X12 X 3'-0" CEDAR

STAIR TREAD, TYP.

STAIR RAIL POST DETAIL

NOT TO SCALE

~ 6"

APPROX. 6" Ø CEDAR

RAIL POST, TYP.

13/16" Ø HOLES. ATTACH

POSTS WITH (2) 3/4" Ø X 13"

LENGTH HEX BOLTS WITH

NUTS AND M.I. WASHERS

3"

11/16" Ø HOLES

FOR 5/8" BOLTS

TO CONNECT

TIMBER STAIR

RAILING TO

POSTS

NOTE:

CENTERLINE ALL BOLT

HOLES TO MATCH

CENTELRINE OF POST

BEARING ASSEMBLY

AND ATTACHMENT OF

STEEL GIRDERS TO

CONCRETE SILLS PER

BRIDGE FABRICATOR'S

DESIGN.

ABUTMENT 1 STAIR ELEVATION

NOT TO SCALE

GABION FOUNDATION.

SEE DETAILS ON

SHEET 8

BRIDGE RAIL ENDS. FIELD CUT ENDS OF

BRIDGE AND STAIR RAILING TO MATCH

UP AS SHOWN, TYP. ALL RAILING ENDS

SEE "STAIR STRINGER

TO SUPERSTRUCTURE

CONNECTION" DETAIL

ON SHEET 11

STAIR RAILING GEOMETRY

AND CONNECTIONS TO

MATCH BRIDGE RAILING

STAIR RAIL POST, TYP. SEE

DETAIL ON THIS SHEET

SEE SHEET 12 FOR STAIR STRINGER

FABRICATION GEOMETRY AND BOLT

HOLE LOCATIONS

FIELD CUT RAIL ENDS

PLUMB AND IN-LINE WITH

FRONT EDGE OF BOTTOM

STAIR TREAD, AS SHOWN

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Forest Service

OFSHEET

9 11

WILLAMETTE NATIONAL

FOREST

REVISION / ISSUENO. DATE

STAMPS, LOGOS, AND SEALS

REGION 6

PACIFIC NORTHWEST REGION

C. SMITH

C. SMITH

N/A2/1/2022

DATE

ARCHIVE NO.

DESIGNER

DRAWN

CHECKED

PROJECT NO.

DRAWING SHEET NO.

N/A

DRAWING TITLE

ABUTMENT 2 STAIR

DETAILS

MIDDLE FORK

RANGER DISTRICT

DIAMOND

CREEK FALLS

TRAIL BRIDGE

J. LATHAM

7" MAX STEP HEIGHT

ONTO FIRST STEP

FILL EXISTING TRAIL

AS NEEDED TO

CONSTRUCT STAIRS

AS SHOWN

8X12 X 5'-0" PT DF/L TIMBER SILL.

PLACE AND COMPACT 6" OF ON

SITE ROCK (3" MINUS) UNDER

THE SILL FOR DRAINAGE

SEE STAIR TREAD

DETAIL ON SHEET 11

SEE STAIR STRINGER TO SILL

CONNECTION. SEE DETAIL ON SHEET 11

4X12 X 3'-0" CEDAR

STAIR TREAD, TYP.

BEARING ASSEMBLY AND

ATTACHMENT OF STEEL GIRDERS TO

CONCRETE SILLS PER BRIDGE

FABRICATOR'S DESIGN.

ABUTMENT 2 STAIR ELEVATION

NOT TO SCALE

SEE "STAIR STRINGER

TO SUPERSTRUCTURE

CONNECTION" DETAIL

ON SHEET 11

CONCRETE SILL

EXISTING GROUND

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Forest Service

OFSHEET

10 11

WILLAMETTE NATIONAL

FOREST

REVISION / ISSUENO. DATE

STAMPS, LOGOS, AND SEALS

REGION 6

PACIFIC NORTHWEST REGION

C. SMITH

C. SMITH

N/A2/1/2022

DATE

ARCHIVE NO.

DESIGNER

DRAWN

CHECKED

PROJECT NO.

DRAWING SHEET NO.

N/A

DRAWING TITLE

STAIR CONNECTION

DETAILS

MIDDLE FORK

RANGER DISTRICT

DIAMOND

CREEK FALLS

TRAIL BRIDGE

J. LATHAM

PLAN

(2) 5/8" Ø X 6" HEX BOLTS THRU 4X12 BACKWALL PLANK WITH

HEX NUTS AND (1) STD. WASHER & (1) M.I. WASHER, TYP.

(2) 3/4" Ø X 12" LENGTH

HEX BOLTS WITH NUTS

AND M.I. WASHER, TYP.

(2) 5/8" Ø X 6" HEX BOLTS WITH HEX NUTS AND (1) STD.

WASHER & (1) M.I. WASHER, TYP.

(3) 5/8" Ø X 2" HEX BOLTS WITH HEX NUTS AND STD.

WASHERS

(3) 5/8" Ø X 6" HEX BOLTS WITH HEX NUTS AND STD.

WASHERS AGAINST STEEL & M.I. WASHERS AGAINST TIMBER

TO ATTACH BACKWALL PLANKS, TYP.

STEEL GIRDER, TYP.

C BRIDGE

L

4X12 CEDAR

DECK PLANK

*STEEL GIRDER

TO BACKWALL

ANGLE:

L4X4X3/8, TYP.

4X12 BACKWALL

4X12 CEDAR

STAIR TREADS

4X16 PT DF/L #1 STAIR STRINGER,

TYP. SEE SHEET 12 FOR DETAILS

6" Ø ± STAIR RAIL POST, TYP.

NOTCH FIRST STAIR TREAD AS

NEEDED TO PROVIDE CLEARANCE

FOR BOLT HEAD AND M.I. WASHERS

FOR BACKWALL CONNECTION

ELEVATION

4X12 CEDAR

DECK PLANK

1 1/2"

STEEL GIRDER

TO BACKWALL

ANGLE:

L4X4X3/8, TYP.

6" Ø ± STAIR RAIL POST, TYP.

4X8 X 5'-0" PT DF/L BACKWALL

4X12 CEDAR STAIR

TREAD, TYP.

STAIR STRINGER TO BACKWALL

ANGLE: L4X4X3/8, TYP.

4X16 STAIR STRINGER, TYP.

SEE SHEET 12 FOR DETAILS.

4X12 X 5'-0" PT DF/L BACKWALL

STAIR STRINGER TO SUPERSTRUCTURE CONNECTION

NOT TO SCALE

4X16 STAIR STRINGER, TYP.

SEE SHEET 12 FOR DETAILS.

4X12 CEDAR STAIR TREAD, TYP.

ATTACH TO STAIR STRINGER WITH

(2) 7" RING SHANK NAILS AT EACH

CONNECTION, TYP.

STAIR TREAD DETAIL

NOT TO SCALE

9/16" Ø HOLES FOR 1/2" Ø X 6" HEX

BOLTS WITH HEX NUTS AND (1) STD.

WASHER & (1) M.I. WASHER

1 1/2"

L3X4X3/8

1 13/16"

STAIR STRINGER TO SILL

CONNECTION DETAIL

NOT TO SCALE

9/16" Ø HOLES FOR 1/2" Ø X 5" LAG

BOLTS WITH (1) STD. WASHER

1 1/2"

6"

3"

NOTE:

FABRICATE 1 ANGLE AS

SHOWN, AND 1 ANGLE

MIRRORED TO WHAT IS

SHOWN AT EACH BRIDGE END

3"2"

4"

1 13/16"

1 13/16"

1'-5"

5 1/2"

TYP.

3"

11/16" Ø, ALL HOLES

4"

1 13/16"

1 13/16"

STEEL GIRDER TO BACKWALL ANGLE

NOT TO SCALE

STAIR STRINGER TO BACKWALL ANGLE

NOT TO SCALE

STAIR STRINGER

TO BACKWALL

ANGLE:

L4X4X3/8, TYP.

2 1/2"

2 1/2"

9"

11/16" Ø, ALL HOLES

L 4" X 4" X 3/8"

L 4" X 4" X 3/8"

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Forest Service

OFSHEET

11 11

WILLAMETTE NATIONAL

FOREST

REVISION / ISSUENO. DATE

STAMPS, LOGOS, AND SEALS

REGION 6

PACIFIC NORTHWEST REGION

C. SMITH

C. SMITH

N/A2/1/2022

DATE

ARCHIVE NO.

DESIGNER

DRAWN

CHECKED

PROJECT NO.

DRAWING SHEET NO.

N/A

DRAWING TITLE

STAIR STRINGER DETAILS

MIDDLE FORK

RANGER DISTRICT

DIAMOND

CREEK FALLS

TRAIL BRIDGE

J. LATHAM

STAIR STRINGER DETAIL (2 AT ABUTMENT 1 END)

NOT TO SCALE

7 1/2"

3 1/2"

13/16" Ø

11/16" Ø

3 3/4"

8'-3"

4X16 PT DF #1 STAIR

STRINGER

T Y

P

11" TYP.

3 1/2"

13/16" Ø

2'- 1 1/2"

STAIR STRINGER DETAIL (2 AT ABUTMENT 2)

NOT TO SCALE

3'-8"

T Y

P

11" TYP.

1'-3 1/2"3"

9/16" Ø

4"

2"

1'-3 1/2" 3"

9/16" Ø

4"

2"

7 1/2"

3 1/2"

13/16" Ø

7 1/2"

4'- 10 1/2"

11/16" Ø

3 3/4"

4X16 PT DF #1

STAIR STRINGER

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