Lost_Creek_Trail_Bridge_Plan_Set.pdf

SHEET INDEX

1 TITLE SHEET & VICINITY MAP

LOCATION: T16S R06E SEC 10

FOREST SERVICE - REGION SIX

WILLAMETTE NATIONAL FOREST

MCKENZIE RIVER RANGER DISTRICT

DRAWINGS FOR

WESTERN OREGON

INDEX MAP

PROJECT SITE

LOST CREEK TRAIL BRIDGE

TYPICAL SECTION & GENERAL NOTES

SUPERSTRUCTURE DETAILS

SUBSTRUCTURE DETAILS

DESIGNED BY:

COLE SMITH, CIVIL ENGINEER, WIL/SIU/MTH NF DATE

REVIEWED BY:

BILL BUTLER, BRIDGE ENGINEER, WIL/SIU/MTH NF DATE

JEFF CASWELL, DEVELOPMENT ENGINEER, WIL/SIU/MTH NF DATE

APPROVED BY:

TERRY BAKER, DISTRICT RANGER, MCKENZIE RIVER RD DATE

APPROVED BY:

DARREN LEMON, SUB REGIONAL ENGINEER DATE

FOREST SERVICE ROAD

STATE HIGHWAY

RANGER STATION

CITY OR TOWN

LEGEND

ASTORIA

PORTLAND

THE

DALLES

TILLAMOOK

DETROIT

CORVALLIS

BEND

EUGENE

FLORENCE

REEDSPORT

COOS

BAY

ROSEBURG

GRANTS

PASS

MEDFORD

SALEM

NEWPORT

REVIEWED BY:

VICINITY MAP

T15S R05E

T15S R06E

T15S R04E

T17S R04E T17S R05E

T17S R06E

T16S R06E

T16S R04E

T16S R05E

MCKENZIE

BRIDGE, OR

MCKENZIE

RIVER

RANGER

STATION

PROJECT

LOCATION

TO SPRINGFIELD, OR

0 1 2 4

SCALE IN MILES

COUGAR

RESERVOIR

BLUE RIVER

RESERVOIR

5 STAIR DETAILS 1

6 STAIR DETAILS 2

PROJECT LOCATED APPROX. 0.3 MILES DOWN TRAIL 3541 FROM A

TURNOUT AREA LOCATED ON THE NORTH SIDE OF HWY 126 APPROX.

2.8 MILES EAST OF THE MCKENZIE RIVER RANGER STATION.

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TYPICAL SECTION:

NOT TO SCALE

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GENERAL NOTES:

SPECIFICATIONS: MATERIALS AND CONSTRUCTION OF THIS STRUCTURE SHALL BE IN

ACCORDANCE WITH THE STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS

AND BRIDGES ON FEDERAL HIGHWAY PROJECTS (FP-03).

PREFABRICATED STEEL BRIDGE SUPERSTRUCTURE: PREFABRICATED STEEL

SUPERSTRUCTURE DESIGN MUST BE A STEEL GIRDER CONFIGURATION SIMILAR TO

THAT SHOWN ON THE DRAWINGS. THE BRIDGE SHALL MAINTAIN THE CLEARANCES

ABOVE HIGH WATER INDICATED ON THE BRIDGE ELEVATION. THE BRIDGE

CROSS-SECTION SHALL BE DETERMINED BY THE CONTRACTOR, BUT SHALL PROVIDE

THE WIDTH AND RAILING DETAILS AS INDICATED ON THE BRIDGE TYPICAL SECTION.

ALL RELATED DETAILS SUCH AS PROFILE, ABUTMENT DETAILS, BEARINGS AND TIMBER

DECKING SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO FINALIZE AND

CONSTRUCT.

DESIGN: THE DESIGN OF ALL PREFABRICATED STEEL BRIDGE SUPERSTRUCTURE

ELEMENTS SHALL COMPLY WITH THE AASHTO LRFD GUIDE SPECIFICATION FOR

DESIGN OF PEDESTRIAN BRIDGES, CURRENT EDITION AND AASHTO LRFD BRIDGE

DESIGN SPECIFICATIONS, CURRENT EDITION. PROVIDE CAMBER FOR 100% OF THE

FULL DEAD LOAD DEFLECTION PLUS 1% OF BRIDGE SPAN. SUBMIT SHOP DRAWINGS

AND DESIGN CALCULATIONS TO CO FOR APPROVAL 14 DAYS MIN. PRIOR TO

FABRICATION. SUPERSTRUCTURE DESIGN SHALL BE STAMPED BY A REGISTERED

PROFESSIONAL ENGINEER (REGISTERED IN THE STATE OF OREGON) PRIOR TO

FABRICATION.

SUPERSTRUCTURE MATERIALS: USE STEEL SHAPES, PLATES AND BARS OF

WEATHERING STEEL CONFORMING TO AASHTO M270, GRADE 50W (ASTM A588 OR

ASTM A242) OR ASTM A847 FOR SQUARE AND RECTANGULAR TUBING. 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 A325), TYP 3, UNLESS NOTED OTHERWISE. USE MALLEABLE IRON WASHERS

AGAINST WOOD.

HARDWARE & STRUCTURAL STEEL FOR STAIR STRUCTURES: STEEL SHAPES SHALL

CONFORM TO ASTM A709, GRADE 36. HOT DIP GALVANIZE ALL STEEL COMPONENTS

AFTER FABRICATION ACCORDING TO AASHTO M111. STEEL FASTENERS, BOLTS, NUTS

AND HARDWARE SHALL CONFORM TO ASTM A307, GRADE A. HOT DIP GALVANIZE ALL

STEEL FASTENERS, BOLTS, NUTS, AND HARDWARE ACCORDING TO AASHTO M232.

STEEL FABRICATION: THE PREFABRICATED STEEL BRIDGE SUPERSTRUCTURE SHALL

BE FABRICATED BY AN AISC CERTIFIED PLANT. WHEN STRUCTURAL STEEL IS TO BE

WELDED, THE WELDING PROCEDURE SHALL BE IN ACCORDANCE WITH AMERICAN

WELDING SOCIETY (AWS) D1.5 AND SHALL BE SUITABLE FOR THE GRADE OF STEEL

AND INTENDED USE OR SERVICE.

TIMBER & LUMBER : SOLID SAWN TIMBER MEMBERS SHALL CONFORM TO THE

REQUIREMENTS OF THE GRADING RULES AGENCY FOR THE SPECIES, TYPE AND

GRADE SPECIFIED BELOW.

DECK PLANKS, STAIR STRINGERS, STAIR SILL AND ENDWALL PLANKS:

- WESTERN RED, ALASKA YELLOW, OR PORT ORFORD CEDAR, S4S OR

ROUGH SAWN, NO. 2 GRADE, GRADING RULES AGENCY - WWPA, WCLIB

POLES (HANDRAILS AND RAIL POSTS):

- WESTERN RED, ALASKA YELLOW, OR PORT ORFORD CEDAR, PEELED AND

DRIED

TREATMENT: THE USE OF PRESSURE TREATED WOOD SHALL NOT BE PERMITTED ON

THIS PROJECT.

HYDROLOGY AND HYDRAULICS: THIS BRIDGE IS DESIGNED TO PASS A 100 YEAR

FLOOD OF 3110 CFS WITH A MINIMUM FREEBOARD OF 3.25 FEET.

PREFABRICATED, PRE-ENGINEERED

STEEL GIRDER SUPERSTRUCTURE

4" TO 6" Ø LOG RAILING,

CONNECTED WITH 5/8" Ø TIMBER

BOLT AND NUT. LOCATE BOLT

HEAD AT FACE OF RAIL. REQUIRED

BOLT LENGTH VARIES WITH POST

AND RAIL DIAMETER. SEE RAIL

DETAIL, SHEET 3

4'-0" DECK WIDTH

(2) - 11/16" Ø HOLES AT BOTTOM

OF RAIL POSTS. ATTACH TO

SUPERSTRUCTURE WITH (2) 5/8"

Ø HEX BOLTS AND NUTS WITH

(1) STD. WASHER AND (1) M.I.

WASHER. BOLT LENGTH PER

BRIDGE FABRICATOR'S DESIGN

4" X 12" DECK PLANKS FASTENED

TO GIRDER FLANGE PER DETAIL,

THIS SHEET

BLOCKING PER BRIDGE

FABRICATOR'S DESIGN

6" TO 8" Ø LOG POSTS

WITH BEVELED ENDS, TYP.

STEEL DIAPHRAGM(S) PER

BRIDGE FABRICATOR'S DESIGN

SPACING PER BRIDGE

FABRICATOR'S DESIGN

(4'-0" OUT-TO-OUT MAX.)

3 1/2"

4" MIN.

10" MIN.

TYPICAL DECK PLANK CONNECTION

NOT TO SCALE

2" TYP.

3" TYP.

4" X 12"

DECK

PLANK

TOP

FLANGE

STEEL

GRIDER

PLAN ELEVATION

2" TYP.

TOP FLANGE

STEEL GRIDER

1/4" Ø X 4" LENGTH STAINLESS STEEL "MiTiCon

ASSY SK" WOOD TO STEEL STRUCTURAL

SCREWS, OR APPROVED EQUAL. EMBED

SCREWS 1/2" INTO TOP FLANGE. PRE DRILL

PER MANUFACTURER'S RECOMMENDATION

4" X 12" DECK PLANK

3 1/2" TYP.

FROM EDGE

OF GIRDER

FLANGE

3/4" TYP.

℄ RAIL

℄ RAIL

℄ RAIL

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ELEVATION

REMOVE EXISTING PT TIMBERS (4) -

6X6's. CONSTRUCT CONCRETE

GRADE BEAM IN THE SAME

LOCATION. DIG DOWN TO

COMPETENT ROCK AND POUR

GRADE BEAM TO A TOP ELEVATION

OF 0.66' HIGHER THAN TOP OF

ABUTMENT 2 ELEVATION.

H.W. ELEVATION

(Q100 = 3110 CFS)

APPROX. 3'-3"

FREEBOARD OVER Q100

1%

EDGE OF CREEK

LOST CREEK

PRE-ENGINEERED,

PREFABRICATED STEEL

GIRDER SUPERSTRUCTURE

66'-0" SPAN

STAIR STRUCTURE, SEE

DETAILS, SHEETS 5 & 6

EXISTING 2'-0" Ø x 68'

LENGTH LOG STRINGER

TRAIL BRIDGE TO BE

REMOVED AND PLACED IN

RIVER AS FISH HABITAT.*

*NOTE:

REMOVE ALL HARDWARE FROM EXISTING LOG SUPERSTRUCTURE, RAILING AND

STAIR MEMBERS PRIOR TO SCATTERING, OR PLACING FOR FISH HABITAT.

CONCRETE GRADE BEAM.

SEE DETAILS, SHEET 4

PRE-ENGINEERED,

PREFABRICATED STEEL

GIRDER SUPERSTRUCTURE

0 5 10 15

SCALE IN FEET

0 5 10 15

SCALE IN FEET

REMOVE EXISTING PT TIMBERS (3) -

4X12'S FROM GOVERNMENT LAND.

SET ℄ LOCATION FOR NEW

ABUTMENT BACK AWAY FROM CREEK

1'-4" FROM EXISTING ℄ ABUTMENT.

SAW CUT & EXCAVATE ROCK SUCH

THAT A FLAT ROCK SURFACE EXISTS

TO FORM AND POUR CONCRETE

GRADE BEAM ABUTMENT. SEE

DETAILS ON SHEET 4.

EXISTING TRAIL

CONCRETE GRADE

BEAM. SEE DETAILS,

SHEET 4

STAIR STRUCTURE,

SEE DETAILS,

SHEETS 5 & 6

EXISTING

GROUND

DEPTH OF LOST

CREEK FLOW:

FEBRUARY 2016

ROCK "KNOB" AT END OF BRIDGE.

LATERALLY CENTER NEW

CONCRETE ABUTMENT ON ROCK

TO PROVIDE MAXIMUM BEARING

AREA ON ROCK.

ENDWALL. SEE

DETAILS, SHEET 4

TOP ELEVATION OF CONCRETE GRADE

BEAM AT ABUTMENT #2 TO MATCH TOP OF

EXISTING TIMBER ABUTMENT ELEVATION.

ROCK OUTCROP

RAIL DETAIL

NOT TO SCALE

HALF LAP RAILS, TYP.

AT SPLICES

1/2" Ø TIMBER BOLT AND NUT. LOCATE

BOLT HEAD AT FACE OF RAIL

POST, BOLT & SPLICE

CUT WASHER,. TYP. COUNTERSINK

FOR FULL BEARINGRAIL POST, TYP.

RAIL, TYP.

8"

ELEVATION - RAIL ATTACHMENT PLAN - RAIL SPLICE

5/8" Ø TIMBER BOLT. SEE TYPICAL

SECTION, SHEET 2. COUNTER SINK

HEAD FOR FULL BEARING

1/2" DAP MAX.

COUNTERSINK CUT WASHER

DAP POST TO MATCH

RAIL DIAMETER, 1/2" MAX.

3/4" CHAMFER, TYP.

ABUTMENT #1

ABUTMENT #2

ABUTMENT #1

ABUTMENT #2

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1'-6"

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CONCRETE GRADE BEAM

TYPICAL SECTION

NOT TO SCALE

(2) - 3/4"Ø a307 ANCHOR BOLTS

AT EACH BEARING LOCATION,

EMBED 6" MIN. INTO GRADE

BEAM. PLACEMENT AND

THREADED PROJECTION PER

BRIDGE FABRICATOR'S

RECOMMENDATION.

THREAD PROJECTION

(3) - #4 CONTINUOUS,

EQUALLY SPACED

#4 HOOPS @ 12" ±

(3) - #4 CONTINUOUS,

EQUALLY SPACED

1. AN ALTERNATIVE ANCHOR

BOLT DESIGN FROM STEEL

BRIDGE MANUFACTURER

MAY BE APPROVED.

2. BEARING DESIGN TO BE

PER SUPERSTRUCTURE

MANUFACTURER'S DESIGN.

SUBMIT DESIGN & GET CO

APPROVAL PRIOR TO

BEGINNING CONSTRUCTION.

3. MAINTAIN 2" OF CONCRETE

COVER.

NOTE:

ABUTMENT #1 ELEVATION

NOT TO SCALE

CONCRETE GRADE

BEAM. SEE DETAILS,

THIS SHEET

BEDROCK

BACKFILL BEHIND ENDWALL

PLANKS WITH SUITABLE ON SITE

MATERIAL. COMPACT MATERIAL IN

6" LIFTS WITH 3 PASSES WITH A

VIBRATING PLATE COMPACTER

BOB ENDWALL ANGLE*

ENDWALL TO STEEL GIRDER

CONNECTION. FASTEN

ANGLE TO STEEL GIRDER

WITH (3) 1/2" Ø X 2" HEX

BOLTS AND NUTS WITH STD.

WASHERS. FASTEN ANGLE

TO (2) ENDWALL PLANKS

WITH (2) 1/2" Ø X 5" HEX

BOLTS (EA. PLANK) AND

NUTS WITH (1) STD. WASHER

AND (1) M.I. WASHER

AGAINST TIMBER ENDWALL

L4 X 4 X 3/8", TYP. SEE

DETAIL, THIS SHEET.

ELEVATION

PLAN

3"

3"

2"

TIMBER ENDWALL

PLANKS

2"

9/16" Ø

L4" X 4" X 3/8"

1 13/16"

1 13/16"

GRADE BEAM

ABUTMENT #1 SECTION

NOT TO SCALE

(3) #4 REBAR. EMBED 5" INTO

COMPETENT ROCK WITH

ANCHORING EPOXY (QUIKRETE

FASTSET ANCHORING EPOXY,

OR APPROVED EQUAL) .

4" MIN.

ADJUST MIDDLE BAR

AS NEED TO AVOID

#4 REBAR ROCK

ANCHORS

(3) #4 REBAR. EMBED 5" INTO

COMPETENT ROCK WITH

ANCHORING EPOXY

(QUIKRETE FASTSET

ANCHORING EPOXY, OR

APPROVED EQUAL) .

5'-0"

6" TYP. 2'-0" 2'-0"

4" X 12" X 8'-0" ENDWALL PLANK

4" X 12" X 8'-0" ENDWALL

PLANK. FIELD RIP PLANK TO

FIT FLUSH AGAINST TOP OF

CONCRETE GRADE BEAM

4" X 12" X 4'-0" DECK PLANK

ENDWALL ANGLE

CONNECTION, TYP. SEE

DETAILS ON THIS SHEET

CONCRETE GRADE BEAM. SEE

DETAILS, THIS SHEET. GRADE

BEAM AND REBAR ROCK ANCHORS

AT END OF BRIDGE ARE SIMILAR

SUPERSTRUCTURE BEARING PER

MANUFACTURER'S DESIGN

3/4" CHAMFER ON

TOP EDGES, TYP.

ENDWALL PLANK, SEE ABUTMENT #1

SECTION FOR DETAILS, THIS SHEET

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STAIR STRUCTURE ELEVATION

1'-8"3'-7"

STAIR STRINGER TO SILL

CONNECTION. FASTEN ANGLE

TO STRINGER WITH (2) 1/2" Ø X

6" HEX BOLTS & NUTS WITH (1)

M.I. WASHER (AGAINST WOOD) &

(1) STD. WASHER. FASTEN

ANGLE TO TIMBER SILL WITH (2)

1/2" Ø X 5" LAG BOLTS

ENDWALL TO STEEL

GIRDER CONNECTION.

FASTEN ANGLE TO STEEL

GIRDER WITH (2) 5/8" Ø X

2" HEX BOLTS AND NUTS

WITH STD. WASHERS.

FASTEN ANGLE TO

ENDWALL WITH (2) 5/8" Ø

X 5" HEX BOLTS AND

NUTS WITH (1) STD.

WASHER AND (1) M.I.

WASHER AGAINST

TIMBER ENDWALL

4"X12"X5'-8" ENDWALL PLANK

STAIR STRINGER TO ENDWALL

PLANK CONNECTION. FASTEN

ANGLE TO ENDWALL WITH (2) 5/8" Ø

X 5" HEX BOLTS AND NUTS WITH (1)

STD. WASHER AND (1) M.I. WASHER.

FASTEN ANGLE TO STAIR STRINGER

WITH (1) 5/8" Ø X 5" HEX BOLT (ON

TOP) WITH (1) STD. WASHER AND (1)

AND (1) 5/8" Ø X 3 1/2" LAG BOLT

WITH STD, WASHER (ON BOTTOM)

STEEL BRIDGE

GIRDER WEB, TYP.

4" X 12" X 5'-8"

TIMBER ENDWALL

STEEL BRIDGE

GIRDER FLANGE, TYP.

L4 X 4 X 3/8", TYP. SEE

DETAILS SHEET 6.

L4 X 4 X 3/8", TYP. SEE

DETAILS SHEET 6.

L3 X 4 X 3/8", TYP.

SEE DETAILS

SHEET 6

8"X12"X5'-0"

TIMBER SILL

STAIR STRINGER TO SUPERSTRUCTURE

CONNECTION PLAN VIEW

BRIDGE

8"X12"X5'-0" TIMBER SILL

STAIR TREAD

ANGLES FASTENED

TO STRINGER AND

TREADS WITH (4)

1/2" Ø X 2 1/2" LAG

BOLTS WITH STD.

WASHERS

NOT TO SCALE

NOT TO SCALE

NOT TO SCALE

4" X 12" X 3'-5"

STAIR TREAD,

TYP.

STAIR SECTION

STAIR STRINGER TO ENDWALL PLANK ANGLE FASTENED TO STAIR STRINGER WITH:

(TOP) 5/8" Ø X 5" HEX BOLT AND NUT WITH (1) M.I. WASHER AND (1) STD. WASHER

STAIR STRINGER TO ENDWALL PLANK ANGLE FASTENED TO STAIR STRINGER WITH:

(BOTTOM) 5/8" Ø X 3 1/2" LAG BOLT WITH STD. WASHER

6" TO 8" Ø RAIL

POST, TYP.

4" X 12" X 3'-5"

STAIR TREAD

EXCAVATE

EXISTING GROUND

AND PLACE STAIR

SILL SUCH THAT

THE HEIGHT OF

THE FIRST STAIR

STEP IS 7" ABOVE

THE TRAIL

SURFACE

EXISTING

GROUND

BRIDGE

4"X14" TIMBER STAIR STRINGER,

TYP. SEE STAIR STRINGER

DIMENSIONS ON SHEET 6

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STAIR STRINGER DIMENSIONS

NOT TO SCALE

STAIR TREAD

ANGLE

NOT TO SCALE

STAIR STRINGER-SILL

ANGLE

NOT TO SCALE

STAIR STRINGER-END

WALL ANGLE

NOT TO SCALE

STEEL GIRDER-END

WALL ANGLE

NOT TO SCALE

7/8"

L 2" X 2" X 1/4"

9/16" Ø

9/16" Ø

L 3" X 4" X 3/8" L 4" X 4" X 3/8"

11/16" Ø

2 1/2"

11/16" Ø

10"

1 13/16"

1 13/16"

4"

2 1/2"

L 4" X 4" X 3/8"

1/4" NOSING, TYP.

7" STEP HEIGHT, TYP.

4" X 12" X 3'-5"

STAIR TREAD

STAIR RAILING DIMENSIONS

NOT TO SCALE

MATCH ENDS OF STAIR

RAILING WITH ENDS OF

BRIDGE RAILING

STAIR RAILING AND CONNECTIONS

TO MATCH BRIDGE RAILING, SEE

DETAILS ON SHEET 2, TYPICAL

SECTION

FASTEN STAIR RAIL

POSTS TO STAIR

STRINGER WITH (2) 3/4" Ø

X 9" HEX BOLTS & NUTS

WITH (2) M.I. WASHERS

32.5°

4 1/8"

1'- 0 5/8"

7 11/16"

3"

9"

4"X14" TIMBER STAIR STRINGER,

1"

2"

7/8"

2"

1 1/2"

6"

1 13/16"

1 5/16"

3"

1 1/2"

2 1/2"

9"

1 13/16"

1 13/16"

2 1/2"

4"