2. Project Plans.pdf

U.S. DEPARTMENT OF AGRICULTURE

FOREST SERVICE, PACIFIC SOUTHWEST REGION

PLUMAS NATIONAL FOREST

MT. HOUGH RANGER DISTRICT

PLUMAS COUNTY

CONSTRUCTION PLANS FOR:

CHAMBERS CREEK

TRAIL BRIDGE REPAIR

VICINITY MAP &

ENGINEERS

PLANNERS

SURVEYORS

PROJECT

LOCATION

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T24N T25N

CHAMBERS CREEK TRAIL

LATITUDE: 39.965435

LONGITUDE: -121.30827

R 6E

R 5E

Crescent City Yreka

Mount Shasta

REDDING

Eureka

Chico

Lake South Tahoe

SACRAMENTOSanta Rosa

Stockton OaklandSAN FRANCISCO

Mammoth Lakes

SAN JOSE

APPROVED:

DATEDEPUTY FOREST SUPERVISOR

PLUMAS NATIONAL FOREST

DATEREGIONAL DIRECTOR OF ENGINEERING

APPROVED:

USFS REGION 5

DATEREGIONAL BRIDGE ENGINEER

USFS REGION 5

RECOMMENDED:

R-1754

REGIONAL APPROVAL:

FOREST APPROVAL:INDEX TO SHEETS

NO. DESCRIPTION

1 COVER

2 SUMMARY OF QUANTITIES AND GENERAL

NOTES

3 PROJECT CONTROL

4 TRAIL PLAN & PROFILE

5 DEMOLITION PLAN

6 BRIDGE GENERAL LAYOUT

7 FOUNDATION PLAN

8 - 9 ABUTMENT DETAILS

10 BACKFILL AND DRAINAGE DETAILS

PROJECT

LOCATION

POTENTIAL

STAGING AREA*

*NOTE: FINAL STAGING AREA WILL BE DETERMINED BY THE CO.

3/14/2025

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

ITEM NO. ITEM DESCRIPTION

MEASUREMENT

QTY COMMENTS

METHOD UNIT

15101 MOBILIZATION LSQ LUMP SUM ALL

15201 CONSTRUCTION SURVEY AND STAKING, METHOD 1, TOLERANCE A LSQ LUMP SUM ALL

15713 SOIL EROSION AND POLLUTION CONTROL LSQ LUMP SUM ALL

20301 REMOVAL OF EXISTING BRIDGE, DISPOSAL METHOD A AND D LSQ LUMP SUM ALL

21001 TRAIL EXCAVATION AND EMBANKMENT CONSTRUCTION CQ CUBIC YARD 2 IN PLACE QUANTITY, NOT ADJUSTED FOR SHRINK/SWELL. INCLUDES EMBANKMENT MATERIAL BEHIND

BACKWALL AND BETWEEN WINGWALLS AT ABUTMENT 2.

55201 STRUCTURAL CONCRETE, CLASS A(AE), PEDESTAL & BACKWALL

EXTENSION CQ CUBIC YARD 1.5 INCLUDES REINFORCING STEEL AND 2" STD GALVANIZED WEEPHOLE DRAIN PIPE

55701 STRUCTURAL TIMBER AND LUMBER, DOUG FIR-LARCH, NO. 2 OR

BETTER RUNNING BOARDS CQ MBF 0.6

56314 LEAD PAINT CONTAINMENT LSQ LUMP SUM ALL

57101 STEEL PREFABRICATED BRIDGE SUPERSTRUCTURE, DESIGN,

FABRICATE, TRANSPORT, AND INSTALL LSQ LUMP SUM ALL

60501 STANDARD UNDERDRAIN SYSTEM CQ LINEAR FOOT 5 INCLUDES NONWOVEN GEOTEXTILE, COMMERCIALLY SOURCED GRANULAR BACKFILL, AND PERFORATED

PIPE. SEE SHEET 10.

62200 TRANSPORTATION OF MATERIALS & EQUIPMENT TO SITE LSQ LUMP SUM ALL

SUMMARY OF ESTIMATED QUANTITIES

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

DEPA R TMENT OF AGR I CU LT

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REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

SUMMARY OF

QUANTITIES AND

GENERAL NOTES

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 2

MT. HOUGH

RANGER DISTRICT

MATERIAL NOTESGENERAL NOTES

BRIDGE DESIGN: THIS STRUCTURE IS DESIGNED FOR PEDESTRIAN AND EQUESTRIAN LOADING IN ACCORDANCE WITH AASHTO GUIDE SPECIFICATIONS FOR THE DESIGN OF PEDESTRIAN BRIDGES AND AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, 9TH EDITION WITH CURRENT INTERIMS, AND SNOW AND RECREATIONAL LOADS IN

ACCORDANCE WITH THE FOREST SERVICE HANDBOOK.

SNOW LOAD: 310 PSF PER USFS

SEISMIC: SEISMIC PARAMETERS PER FOUNDATION REPORT BY BLACKBURN CONSULTANTS DATE DECEMBER 2024.

SITE CLASS = A

SS = 0.787 G HORIZONTAL RESPONSE SPECTRAL ACCELERATION COEFFICIENT AT 0.2-SEC PERIOD S1 = 0.295 G HORIZONTAL RESPONSE SPECTRAL ACCELERATION COEFFICIENT AT 1-SEC PERIOD

FA = 0.8 SITE FACTOR FOR SHORT-PERIOD RANGE OF ACCELERATION RESPONSE SPECTRUM

FV = 0.8 SITE FACTOR FOR LONG-PERIOD RANGE OF ACCELERATION RESPONSE SPECTRUM

SDS = 0.420 G HORIZONTAL RESPONSE SPECTRAL ACCELERATION COEFFICIENT AT 0.2-S PERIOD MODIFIED BY SHORT-PERIOD SITE FACTOR SMS = 0.630 G ADJUSTED MCE SPECTRAL RESPONSE ACCELERATION COEFFICIENT AT 0.2-S PERIOD MODIFIED BY SHORT-PERIOD SITE FACTOR SM1 = 0.236 G ADJUSTED MCE SPECTRAL RESPONSE ACCELERATION COEFFICIENT AT 1.0-S PERIOD MODIFIED BY LONG-PERIOD SITE FACTOR SD1 = 0.157 G HORIZONTAL RESPONSE SPECTRAL ACCELERATION COEFFICIENT AT 1.0-S PERIOD MODIFIED BY LONG-PERIOD SITE FACTOR

TL = 16 SEC LONG PERIOD TRANSITION PERIOD

PGA = 0.34 G PEAK GROUND ACCELERATION

PGAM = 0.272 G MODIFIED PEAK GROUND ACCELERATION

SPECIFICATIONS: CONSTRUCT THE PROJECT IN COMPLIANCE WITH FEDERAL HIGHWAY ADMINISTRATION STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROAD AND BRIDGES ON FEDERAL HIGHWAY PROJECTS (FP-14) AND APPLICABLE FOREST SERVICE SUPPLEMENTAL SPECIFICATIONS (FSSS).

EROSION CONTROL PLAN: SUBMIT A SOIL EROSION AND SEDIMENT CONTROL PLAN TO THE CONTRACTING OFFICER FOR APPROVAL AT LEAST FOURTEEN (14) DAYS PRIOR TO BEGINNING WORK. SEE SECTION 157 OF THE SUPPLEMENTAL SPECIFICATIONS FOR DETAILS.

DISPOSAL: ALL MATERIALS DESIGNATED FOR REMOVAL BECOME THE PROPERTY OF THE CONTRACTOR AND ARE TO BE DISPOSED OF BY REMOVING FROM THE FOREST IN AN ENVIRONMENTALLY SAFE MANNER IN ACCORDANCE WITH ALL LOCAL, STATE AND FEDERAL REQUIREMENTS.

LEAD CONTAMINATED STEEL DISPOSAL PLAN: DISPOSE OF LEAD CONTAMINATED STEEL ACCORDING TO FP-14 SECTION 203.05(D). SUBMIT A DETAILED DISPOSAL PLAN TO THE CONTRACTING OFFICER FOR APPROVAL AT LEAST FOURTEEN (14) DAYS PRIOR TO BEGINNING WORK.

TEMPORARY TRAFFIC CONTROL: SUBMIT A TEMPORARY TRAFFIC CONTROL PLAN TO THE CONTRACTING OFFICER FOR APPROVAL AT LEAST 30 DAYS PRIOR TO

INTENDED USE.

HELICOPTER TRANSPORT: IT IS ASSUMED THAT HELICOPTER TRANSPORT EFFORTS WILL BE NECESSARY FOR THE CONSTRUCTION OF THIS PROJECT. THE STAGING AREA OF MATERIALS AND EQUIPMENT FOR THE HELICOPTER TRANSPORTATION IS ASSUMED TO BE WITHIN ONE MILE OF THE BRIDGE SITE. THE FINAL STAGING SITE IS TO BE COORDINATED WITH CO. SUBMIT A PLAN TO THE CO FOR APPROVAL THAT INCLUDES, AT A MINIMUM, 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. MODIFY PLAN TO FIT CHOSEN METHODS IF CONTRACTOR ELECTS TO USE METHODS OTHER THAN HELICOPTER TRANSPORT.

CONCRETE: USE CLASS A(AE) FOR ALL CAST-IN-PLACE CONCRETE WITH

F'C = 4500 PSI AT 28 DAYS AND AN ENTRAINED AIR CONTENT PER THE

STANDARD SPECIFICATIONS. FINISH ALL ELEMENTS WITH A CLASS 2-

RUBBED FINISH. MAKE ALL CONCRETE IN ACCORDANCE WITH AN

APPROVED MIX DESIGN. CHAMFER ALL EXPOSED EDGES OF CONCRETE

3/4" AND FILLET ALL ACUTE ANGLES 3" UNLESS OTHERWISE NOTED.

REINFORCING STEEL: USE NON-PRESTRESSED REINFORCING OF THE

DEFORMED TYPE CONFORMING TO AASHTO M31 (ASTM A615), GRADE 60.

CONCRETE COVER SHALL BE AS SHOWN; WHERE NOT SHOWN IT SHALL

CONFORM TO AASHTO. CUT AND BEND STEEL IN ACCORDANCE WITH ACI

315. CUT BARS ON-SITE TO ENSURE LENGTHS ARE ADEQUATE FOR

REQUIRED EMBEDMENT INTO EXISTING CONCRETE AND BEDROCK.

CONNECTIONS: ADHESIVE ANCHORS (AA): SIMPSON "SET-3G ADHESIVE"

WITH REINFORCING BARS (CODE REPORT NO. ESR-4057) OR APPROVED

EQUAL.

CP-102

CP-103

CP-105

CP-107

CP-106

603570

35903600

36303640

3680369037003710372037303740375037603770

37803790

37603770

CP-104

POINT TABLE

POINT #

NORTHING

1871567.17

1871478.55

1871510.49

1871509.19

1871537.79

1871453.46

EASTING

6755456.16

6755449.48

6755441.69

6755488.75

6755477.89

6755472.82

ELEVATION

3684.98

3670.30

3658.84

3658.30

3669.77

3677.06

DESCRIPTION

REBAR&CAP

60D NAIL

PAINT X

PAINT X

60D NAIL

60D NAIL

EXISTING

BRIDGE

TO TRAILHEAD

FLOW

PROJECT CONTROL

SCALE: 1" = 60'

CONTROL POINTS

DATE SURVEYED: 10/23/2024

COORDINATE SYSTEM: NAD83, (2011) EPOCH 2017.5, NAVD88, GEOID 18. CALIFORNIA

COORDINATE SYSTEM ZONE 1

EXISTING EDGE OF WATER

MAJOR CONTOUR (10')

MINOR CONTOUR (2')

EXISTING BRIDGE

LEGEND

EXISTING FEATURES

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

DEPA R TMENT OF AGR I CU LT

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REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

PROJECT

CONTROL

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 3

MT. HOUGH

RANGER DISTRICT

WATERFALL

TO PEAK

N

EXISTING BRIDGE

ABUTMENT, TYP.

EXISTING CONCRETE

SPREAD FOOTINGS,

TYP

CP-105

CP-106

1+00

PI

: 1

+2 0.

PI: 1

+58.23

PI: 0+51.20

CP-104

0+30 1+00 1+40

C R

EE

K

C H

AM

BE

R S

TRAIL NOTES:

1. PROVIDE TRAIL EMBANKMENT FILL AT BRIDGE

APPROACHES TO MATCH TRAIL GRADE WITH ABUTMENT

BACKWALL ELEVATION. SEE FSSS SECTION 210.

2. MINOR EXCAVATION FOR ABUTMENT RETROFIT IS

INCIDENTAL TO ABUTMENT ITEMS.

3. LEAD PAINT ON EXISTING TRAIL BRIDGE MUST BE

CONTAINED PER FP-14 SECTION 563.05.

PLAN

SCALE IN FEET

0 5 10

CONTOUR INTERVAL = 2'

(PLOT SIZE = 11" x 17")

N

PROFILE

EXISTING BRIDGE

ABUTMENT 1

EXISTING BRIDGE

ABUTMENT 2

REMOVE AND DISPOSE

EXISTING BRIDGE,

SEE SHEET 5

NEW PREFABRICATED

STEEL TRAIL BRIDGE,

SEE SHEET 6

EXISTING

CENTERLINE TRAIL

EXISTING BRIDGE

ABUTMENT 1

EXISTING BRIDGE

ABUTMENT 2

NEW PREFABRICATED

STEEL TRAIL BRIDGE,

SEE SHEET 6

EXISTING GROUND AT

CENTERLINE TRAIL

ABUTMENT RETROFIT,

TYP. SEE SHEET 7

ABUTMENT RETROFIT,

TYP. SEE SHEET 7

EXISTING EDGE OF WATER

MAJOR CONTOUR (10')

MINOR CONTOUR (2')

EXISTING BRIDGE

LEGEND

EXISTING FEATURES

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 A R TMENT OF AGR I CU LT

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REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

TRAIL PLAN &

PROFILE

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 4

MT. HOUGH

RANGER DISTRICT

BACKFILL BETWEEN WINGWALLS

WITH NATIVE BACKFILL

EXISTING BRIDGE

ABUTMENT 1

EXISTING BRIDGE

ABUTMENT 2

EXISTING STEEL TRUSS TO

BE REMOVED.

EXISTING GROUND AT

CENTERLINE 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 A R TMENT OF AGR I CU LT

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REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

DEMOLITION PLAN

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 5

MT. HOUGH

RANGER DISTRICTEXISTING BRIDGE REMOVAL

NOT TO SCALE

BRIDGE REMOVAL NOTES:

1. EXISTING STEEL TRUSS CONTAINS LEAD PAINT. HAZARDOUS MATERIAL

MUST BE CONTAINED AND DISPOSED OF ACCORDING TO ALL RELEVANT

LOCAL,STATE, AND FEDERAL REGULATIONS.

2. PREPARE A BRIDGE REMOVAL AND DISPOSAL PLAN IN ACCORDANCE WITH

FP-14 SECTION 203 AND SUBMIT TO CO FOR APPROVAL. DESCRIBE THE

STEPS THAT WILL BE TAKEN TO ENSURE THAT LEAD CONTAMINATION

WILL BE CONTAINED THROUGHOUT THE PROCESS, INCLUDING

PRECAUTIONS FOR LIFTING AND HANDLING STEEL ON SITE.

3. TRANSPORT AND DISPOSE OF LEAD PAINT CONTAMINATED STEEL PER

FP-14 SECTION 203.05(D).

4. FOR CONTRACTOR INFORMATION: EXISTING BRIDGE STEEL TRUSS

WEIGHS APPROXIMATELY 6600 LBS ACCORDING TO ORIGINAL USFS

CONSTRUCTION DRAWINGS DATED 2-10-1966.

TRUSS TO BE REMOVED

NOT FOR

CONSTRUCTION

CONTRACTOR SUBMITTAL AND

APPROVAL BY CO REQUIRED

PER FP-14 SECTION 203

365036

PLAN

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

DEPA R TMENT OF AGR I CU LT

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REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

BRIDGE GENERAL

LAYOUT

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 6

MT. HOUGH

RANGER DISTRICT

BRIDGE TYPICAL SECTION

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

CENTERLINE TRAIL

CENTERLINE STRUCTURE

STEEL TRUSS,

TYP.

3'-0" 3'-0"

6'-0" TRAIL

4' -6

TOE PLATE,

TYP.

RUB RAIL,

TYP.

PROVIDE MODULAR DESIGN W/

DECK ASSEMBLY IN THE FIELD AS

REQUIRED FOR TRANSPORTATION.

EXISTING GROUND AT

CENTERLINE TRAIL

NEW PREFABRICATED

STEEL TRAIL BRIDGE

ELEVATION

SCALE: 1" = 10'

CENTERLINE BRG.

ABUTMENT 2

BRG STA = 1+14.05

BRG EL = 3670.19

4.7'

FREEBOARD

EXISTING CONCRETE

ABUTMENT, TYP.

60'-0"

CL BEARING TO CL BEARING

FIX EXP

Q100= *

HYDRAULIC DATA:

Q2 = 348 CFS

AVG. DEPTH = 5.9'

BANKFULL WIDTH = 27.3'±

Q100 = 1960 CFS

AVG. DEPTH = 11.7'

Q100* = 3663.60' AT UPSTREAM

EDGE OF BRIDGE

CENTERLINE BRG.

ABUTMENT 1

BRG STA = 0+54.05

BRG EL = 3670.19

SCALE IN FEET

0 5 10

CONTOUR INTERVAL = 2'

(PLOT SIZE = 11" x 17")

NC

R

EEK

C H

AM

BER

S

CENTERLINE TRAILNEW PREFABRICATED

STEEL TRAIL BRIDGE

60'-4"

OUT-TO-OUT TRUSS LENGTH

1+00

CP-104

CP-106CP-103

PT: 0+51.20

ABUTMENT RETROFIT,

TYP. SEE SHEET 7

REMOVE AND DISPOSE

EXISTING TRAIL BRIDGE,

SEE SHEET 5

IPE HARDWOOD

DECKING

NATIVE BACKFILL,

SEE SHEET 4

(5) 2X12 S4S

#2 OR BETTER

DOUG FIR-LARCH

RUNNING BOARDS

CP-105

CP-106

1+00

PI

: 1

+2 0.

PI: 0+51.20

CP-104

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

DEPA R TMENT OF AGR I CU LT

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REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

FOUNDATION

PLAN

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 7

MT. HOUGH

RANGER DISTRICT

SCALE IN FEET

0 5 10

CONTOUR INTERVAL = 2'

(PLOT SIZE = 11" x 17")

N

PLAN

A

BEARING CAP DETAIL

DOWNSTREAM

END

EXISTING

GROUND

UPSTREAM

END

ABUTMENT 1 LT SHOWN

OTHERS SIMILAR

ABUTMENT SECTION

EXISTING

GROUND

DOWNSTREAM

END

UPSTREAM

END

EXISTING CONCRETE

ABUTMENTS, TYP

ST

A

0+

.0

C /L

B R

G . A

BU

T.

60'-0"

CL BEARING TO CL BEARING

ST

A

1+

.0

C /L

B R

G . A

BU

T.

C R

EEK

C H

AM

BER

S

CENTERLINE TRAIL

ABUTMENT 2

SCALE: 1" = 5'

LOOKING AHEAD

ON-LINE

ABUTMENT 1

SCALE: 1" = 5'

LOOKING BACK

ON-LINE

EXISTING CONCRETE

ABUTMENT

CONCRETE PEDESTAL

EXTENSION, TYP.

SEE DETAIL SHEET 8

1'-4"+/-

1'-15 8"+/-

1'-9"1'-9"

1'-11"+/-

EXISTING CONCRETE

ABUTMENT

CONCRETE PEDESTAL

EXTENSION, TYP.

SEE DETAIL SHEET 9

6'-1"+/- 4'-103

4"+/-

1'-9" 1'-9"

1'-11"+/-

4'-6"

1'-11"+/-

A

PREFABRICATED

STEEL TRAIL BRIDGE

EXISTING BRIDGE

ABUTMENT

1. DOWEL INTO EXISTING CONCRETE AND BEDROCK AND ATTACH BARS

WITH ADHESIVE ANCHORS. SEE SHEETS 8 - 9 FOR DETAILS.

2. DIMENSIONS PROVIDED BASED ON ASSUMED BACKWALL HEIGHT OF

1'-11". CAST PEDESTAL EXTENSIONS TO HEIGHT REQUIRED TO SET THE

TOP OF THE BRIDGE DECK EVEN WITH THE TOP OF THE BACKWALL AT

THE END OF THE BRIDGE.

3. THE SUBSTRUCTURE IS DESIGNED FOR THE FOLLOWING PARAMETERS

OUTLINED IN PAGE 7 OF THE GEOTECHNICAL REPORT.

BEARING RESISTANCE FACTOR = 0.45

FACTORED BEARING RESISTANCE = 20,000 PSF

FOUNDATION NOTES

CAP WALL, SEE

DETAIL SHEET 9

ADHESIVE ANCHORS,

TYP.

TOP OF EXISTING

BACKWALL

BEARING LEDGE

CAP

EXISTING BEDROCK

VARIES, SEE DETAIL

THIS SHEET60'-10"

EXISTING BACKWALL TO EXISTING BACKWALL

NEW BEARING

LEDGE CAP

NEW BEARING

LEDGE CAP

NEW BACK

WALL AND CAP

NEW BEARING

LEDGE CAP

NEW BEARING

LEDGE CAP

(2) 1"Ø ANCHOR

BOLTS TYP EA

BEARING, SEE

SHEETS 8 - 9

RUNNING BOARD

DECK

EL 3668.27

BEARING

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

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REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

ABUTMENT

DETAILS

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 8

MT. HOUGH

RANGER DISTRICT

ABUTMENT 1 PLAN

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

ABUTMENT 1 DOWNSTREAM FOOTING

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

(2) #5 "U2" BARS AT

12" OC MAX VERT

SPACING. EMBED

INTO (E) CONCRETE

WITH AA (6" EFF

EMBED), TYP.

CONCRETE PEDESTAL

EXTENSION WITH (4) #6

VERT BARS @

CORNERS. EMBED INTO

(E) CONCRETE WITH AA

(12" EFF EMBED)

8"

2"

ABUTMENT 1 ELEVATION

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

ABUTMENT 1 UPSTREAM FOOTING

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

(1) #5 "U1" BAR.

EMBED INTO (E)

CONCRETE WITH AA

(6" EFF EMBED)

8"

2"

CONCRETE PEDESTAL

EXTENSION WITH (4) #6

VERT BARS @

CORNERS. EMBED INTO

(E) CONCRETE WITH AA

(12" EFF EMBED)

CONCRETE NOTES:

1. ALL REBAR DIMENSIONS ARE FOR ESTIMATING PURPOSES ONLY. CUT BARS ON SITE TO ENSURE

PROPER FITMENT.

2. EMBED ALL BARS INTO EXISTING CONCRETE WITH ADHESIVE ANCHORS WITH 6" OR 12" EFFECTIVE

EMBEDMENT AS NOTED.

3. PROVIDE 11

2" CLEAR COVER TO REBAR UNLESS DIMENSIONED OTHERWISE.

4. DIMENSIONS TO TOP OF PEDESTAL EXTENSIONS ARE APPROXIMATE. EXTEND CONCRETE PEDESTALS

TO ELEVATION REQUIRED FOR BRIDGE VERTICAL ALIGNMENT WITH EXISTING BACKWALL.

5. ANCHOR PLATE AND BRIDGE BEARING ASSEMBLY BY BRIDGE MANUFACTURER. ANCHOR BOLT

LOCATION DIMENSIONS ARE TYPICAL EACH SIDE AND ASSUMED FOR DETAILING PURPOSES. CONFIRM

ANCHOR BOLT PLACEMENT WITH MANUFACTURER'S DESIGN.

1' -1

5 8" +

1' -4

8" 43

8"43 8" 43

8"

(2) #5 "U2" BARS AT

12" OC MAX VERT

SPACING. EMBED

INTO (E) CONCRETE

WITH AA (6" EFF

EMBED), TYP.

8"

2"

1'-9" 1'-9"

1' -6

1' -6

51 2" 61 2"

6"

(2) 1"Ø ASTM F1554 GR.

105 ANCHOR BOLTS W/

10" EMBED OR (2) 1"Ø

ASTM F1554 GR. 105

ADHESIVE ANCHORS

W/ 10" EFF EMBED

1'-9" 1'-9"

6"

6"

2"

EL 3668.27

BEARING

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

DEPA R TMENT OF AGR I CU LT

UR

E

3/

/2

:5

JU

ST

IN

.L U

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PK

IN

C

:\D

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W O

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JA

-P R

O D

\D M

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\7

5.

C

H

AM

BE

R

S C

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EE

K

TR

AI

L

BR

ID

G E

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IG

N

.D W

G

REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

ABUTMENT

DETAILS

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 9

MT. HOUGH

RANGER DISTRICT

ABUTMENT 2 PLAN

SCALE: 3/8" = 1'-0"

ABUTMENT 2 DOWNSTREAM FOOTING

SCALE: 3/8" = 1'-0"

ABUTMENT 2 ELEVATION

SCALE: 3/8" = 1'-0"

ABUTMENT 2 UPSTREAM FOOTING

SCALE: 3/8" = 1'-0"

CONCRETE PEDESTAL

EXTENSION WITH (4) #6

VERT BARS @

CORNERS. EMBED INTO

(E) CONCRETE WITH AA

(12" EFF EMBED)

8"

6' -1

8"43

8"43 8"

4' -1

03 4" +

(2) #5 "U2" BARS AT 12" OC

MAX VERT SPACING. EMBED

INTO (E) CONCRETE WITH

AA (6" EFF EMBED), TYP.

CONCRETE PEDESTAL

EXTENSION WITH (4) #6

VERT BARS @

CORNERS. EMBED INTO

(E) CONCRETE WITH AA

(12" EFF EMBED)

8"

2"

(2) #5 "U2" BARS AT 12" OC

MAX VERT SPACING. EMBED

INTO (E) CONCRETE WITH

AA (6" EFF EMBED), TYP.

8"

2"

(6) #5 "U1" BARS AT 12" OC

MAX VERT SPACING. EMBED

INTO (E) CONCRETE WITH

AA (6" EFF EMBED)

8"

2"

(5) #5 "U1" BARS AT 12" OC

MAX VERT SPACING. EMBED

INTO (E) CONCRETE WITH

AA (6" EFF EMBED)

8"

2"

0'-6" BACKWALL WITH #5 BARS

AT 12" OC MAX VERT AND

HORIZ. EMBED W/ AA INTO (E)

CONCRETE (6" EFF EMBED)

AND INTO BEDROCK (12" EFF

EMBED)

UNDERDRAIN

PERFORATED PIPE BEHIND

WALL, SEE SHEET 10.

2" Ø STD GALV PIPE

WEEPHOLE DRAIN

0'-6" CAP SLAB WITH #5 BARS AT 12"

OC MAX EACH WAY. EMBED W/ AA

INTO (E) CONCRETE (6" EFF EMBED).

SLAB TO BE CONSTRUCTED AFTER

MATERIAL BACKFILL BEHIND

CONCRETE BACKWALL. SEE SHEET 10.

1'-9" 4'-6" 1'-9"

1' -6

CONCRETE NOTES:

1. ALL REBAR DIMENSIONS ARE FOR ESTIMATING PURPOSES ONLY. CUT BARS ON SITE TO ENSURE PROPER

FITMENT.

2. EMBED ALL BARS INTO EXISTING CONCRETE WITH ADHESIVE ANCHORS WITH 6" OR 12" EFFECTIVE EMBEDMENT

AS NOTED.

3. PROVIDE 11

2" CLEAR COVER TO REBAR UNLESS DIMENSIONED OTHERWISE.

4. DIMENSIONS TO TOP OF PEDESTAL EXTENSIONS ARE APPROXIMATE. EXTEND CONCRETE PEDESTALS TO

ELEVATION REQUIRED FOR BRIDGE VERTICAL ALIGNMENT WITH EXISTING BACKWALL.

5. ANCHOR PLATE AND BRIDGE BEARING ASSEMBLY BY BRIDGE MANUFACTURER. ANCHOR BOLT LOCATION

DIMENSIONS ARE TYPICAL EACH SIDE AND ASSUMED FOR DETAILING PURPOSES. CONFIRM ANCHOR BOLT PLACEMENT WITH MANUFACTURER'S DESIGN. ENSURE SLOTTED BOLT HOLES ARE PROVIDED AT ABUTMENT 2.

1'-11 2"

51 2" 61 2"

6"

NOTE: UNDERDRAIN PERFORATED PIPE

BEHIND WALL NOT SHOWN FOR CLARITY.

SEE SHEET 10 FOR DRAINAGE AND

BACKFILL REQUIRED AT ABUTMENT 2

8'-0"

45 8"

6"

6"

6"

(2) 1"Ø ASTM F1554 GR.

105 ANCHOR BOLTS W/

10" EMBED OR (2) 1"Ø

ASTM F1554 GR. 105

ADHESIVE ANCHORS

W/ 10" EFF EMBED

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

DEPA R TMENT OF AGR I CU LT

UR

E

3/

/2

:5

JU

ST

IN

.L U

M

PK

IN

C

:\D

JA

-P W

W O

R K\

D

JA

-P R

O D

\D M

S4

\7

5.

C

H

AM

BE

R

S C

R

EE

K

TR

AI

L

BR

ID

G E

- D

ES

IG

N

.D W

G

REGION 5

PACIFIC SOUTHWEST REGION

CHAMBERS CREEK

BRIDGE REPAIR

PLUMAS

NATIONAL FOREST

BACKFILL AND

DRAINAGE

DETAILS

Mar-25

A. WRIGHT

J. LUMPKIN

J. ROSKE

7425.02

10 10

MT. HOUGH

RANGER DISTRICT

ABUTMENT 2 DRAINAGE AND BACKFILL SECTION

SCALE: 1" = 16'

PEDESTAL EXTENSION,

TYP. SEE SHEET 9

2' -0

" M

AX

-2% MIN

ABUTMENT 2 DRAINAGE AND BACKFILL SECTION

SCALE: 1" = 16'

VERTICAL LAYER 3/4"

GRANULAR BACKFILL,

12" MIN THICKNESS

NATIVE BACKFILL

MATERIAL

4" MINIMUM DIAMETER

PERFORATED PIPE

STD 2" GALVANIZED STEEL

WEEPHOLE PIPE

-2% MIN

NONWOVEN GEOTEXTILE

FILTER FABRIC, MIRAFI

140N OR EQUIVALENT

WRAP PER "FOUNDATION

REPORT"

2' -0

" M

AX

CAP SLAB, SEE SHEET 9 CAP SLAB, SEE SHEET 9

BACKWALL,

SEE SHEET 9

EXISTING GROUND

1'-0" MIN.

EXISTING

ABUTMENT 2, TYP.

CONSTRUCTION JOINT

DRAINAGE AND BACKFILL NOTES:

1) BASED ON "FOUNDATION REPORT: CHAMBERS CREEK BRIDGE REPLACEMENT"

(DECEMBER 2024), PREPARED BY BLACKBURN CONSULTING. REFER TO THIS REPORT

FOR ADDITIONAL INFORMATION.

2) CONCRETE WALL REINFORCEMENT NOT SHOWN FOR CLARITY. SEE SHEET 9 FOR

CONCRETE AND REINFORCEMENT DETAILS.