Huntington Ravine Trail Bridge Plans 2.pdf

PROJECT LOCATION

PROJECT SITE

PROJECT LOCATION:

SHEET OF

United States Department of Agriculture Forest Service

INDEX OF SHEETS

SHEET SHEET TITLE DATE

G-01 TITLE SHEET 5/16/2025

C-02 DESIGN DATA & GENERAL NOTES 5/16/2025

C-03 QUANTITIES & MISCELLANEOUS DETAILS 5/16/2025

C-04 TEMPORARY TRAIL CLOSURE 5/16/2025

C-05 TYPICAL SECTIONS 5/16/2025

C-06 PLAN OF SITE 5/16/2025

C-07 MP 0.8433 PLAN OF STRUCTURE 5/16/2025

C-08 MP 0.9594 PLAN OF STRUCTURE 5/16/2025

C-09 ABUTMENT PLAN 5/16/2025

C-10 STRUCTURE DETAILS 5/16/2025

FROM THE NH-16 / HUNTINGTON RAVINE TRAILHEAD INTERSECTION

OF PICKHAM'S GRANT, NEW HAMPSHIRE HEAD NORTHWEST ON

APPALACHIAN NATIONAL SCENIC TRAIL FOR 200 FEET, THEN

CONTINUE STRAIGHT ONTO TUCKERMAN RAVINE TRAIL. CONTINUE

ON TUCKERMAN RAVINE TRAIL FOR 1.6 MILES, THEN TURN RIGHT

ONTO HUNTINGTON RAVINE TRAIL. CONTINUE ON HUNTINGTON

RAVINE TRAIL FOR 0.3 MILES TO THE BRIDGE LOCATION.

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EASTERN REGION

WHITE MOUNTAIN NATIONAL FOREST - ANDROSCOGGIN RANGER DISTRICT

COOS COUNTY

NEW HAMPSHIRE

HUNTINGTON RAVINE TRAIL BRIDGES #2 & #3

REPLACEMENT @ MP 0.8433 & MP 0.9594

STRUCTURE NUMBER:

TRAIL BRIDGE #2 MP 0.8433

092202-31393-0.8433 (LAT 44.267877, LONG -71.277962)

TRAIL BRIDGE #3 MP 0.9594

092202-31393-0.9594 (LAT 44.267965, LONG -71.277650)

PROPOSED STRUCTURE DESCRIPTION: (BOTH)

26 FOOT (OVERALL LENGTH) SINGLE SPAN STEEL GIRDER BRIDGE WITH A

TIMBER PLANK DECK ON STEEL GRADE BEAM FOUNDATIONS.

95% PLANS

RECOMMENDED BY:

FOREST ENGINEER

DISTRICT RANGER

DATE

APPROVED:

R9 DIRECTOR OF ENGINEERING DATE

DATE

FOREST SUPERVISOR DATE

R9 BRIDGE PROGRAM MANAGER DATE

PROJECT

LOCATION

TO GORHAM

TUCKERMAN RAVINE TRAIL

HUNTINGTON RAVINE TRAIL

BOOTT SPUR TRAIL

APPALACHIAN

NATIONAL

SCENIC TRAIL

APPALACHIAN

NATIONAL

SCENIC TRAIL

NH-16

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U.P. ENGINEERS & ARCHITECTS, INC.

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ENGINEERING ARCHITECTURE PLANNING SURVEYING ENVIRONMENTAL

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

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EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

DESIGN DATA &

GENERAL NOTES

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-02

10 2

GENERAL NOTES:

THE WORK COVERED BY THESE PLANS INCLUDES REMOVAL OF THE ENTIRE EXISTING BRIDGES (SALVAGING AS SPECIFIED HEREIN), INSTALLATION OF THE NEW BRIDGES AS SHOWN HEREIN, CONSTRUCTION OF THE APPROACHES TO THE LIMITS SHOWN, PLACING RIPRAP, AND SLOPE RESTORATION.

THE TRAIL WILL BE CLOSED AND A DETOUR IS NOT POSSIBLE. IF THE TRAILS ARE TO BE USED FOR TRANSPORTING MATERIALS OR EQUIPMENT, ALL EQUIPMENT AND MATERIAL SHALL BE DELIVERED PRIOR TO REMOVAL OF THE STRUCTURES. A TEMPORARY WALKWAY SHALL BE PROVIDED FOR AVALANCHE INSPECTION AND SAR OPERATIONS.

THE STATIONING AS SHOWN ON THESE PLANS FOR REFERENCE POINTS ARE BELIEVED TO BE CORRECT. IT SHALL, HOWEVER, BE CHECKED AT THE TIME OF STARTING CONSTRUCTION, AND IF THE STATIONING SHOWN ON THE PLANS IS INCORRECT, IT SHALL BE REPORTED TO THE ENGINEER.

THE CONTRACTOR SHALL COORDINATE ALL OF THEIR WORK AND ANY UTILITY COMPANIES RELOCATION WORK AT NO ADDITIONAL COST TO THE PROJECT.

FOR PROTECTION OF UNDERGROUND UTILITIES AND IN CONFORMANCE WITH PUBLIC ACT 174, THE CONTRACTOR SHALL DIAL "811" A MINIMUM OF THREE FULL WORKING DAYS, EXCLUDING SATURDAYS, SUNDAYS AND HOLIDAYS PRIOR TO BEGINNING EACH EXCAVATION IN AREAS WHERE PUBLIC UTILITIES HAVE NOT BEEN PREVIOUSLY LOCATED.

MEMBERS WILL THUS BE ROUTINELY NOTIFIED. THIS DOES NOT RELIEVE THE CONTRACTOR OF THE RESPONSIBILITY OF NOTIFYING UTILITY OWNERS WHO MAY NOT BE A PART

OF THE "DIG SAFE" ALERT SYSTEM.

IN LIEU OF A GEOTECHNICAL INVESTIGATION, THE FOUNDATIONS WERE DESIGNED WITH AN ASSUMED ALLOWABLE BEARING PRESSURE OF 2,000 PSF. THE CONTRACTOR SHALL VERIFY SOILS PRIOR TO CONSTRUCTION OF ABUTMENTS. IF ORGANIC, SOFT OR OTHERWISE UNSUITABLE SOILS ARE ENCOUNTERED, HE SHALL CONTACT THE FOREST SERVICE

CONTRACTING OFFICER REPRESENTATIVE FOR FURTHER INSTRUCTION.

WATER LEVEL IS SUBJECT TO CHANGE. THE CONTRACTOR IS RESPONSIBLE FOR DETERMINING THE EXPECTED WATER LEVELS DURING CONSTRUCTION.

NO MATERIAL SHALL BE ALLOWED TO ERODE INTO THE WATER COURSE, NOR SHALL MATERIAL BE PLACED INTO THE WATER COURSE EXCEPT AS SHOWN ON THESE PLANS.

ALL EQUIPMENT SHALL BE CLEANED ACCORDING TO THE SPECIFICATIONS PRIOR TO USE ON THIS PROJECT. CONTRACTOR SHALL MAKE EQUIPMENT AVAILABLE FOR

INSPECTION PRIOR TO MOBILIZATION ONTO FS LANDS.

THE CONTRACTOR SHALL STOP WORK IMMEDIATELY AND NOTIFY THE FOREST SERVICE CONTRACTING OFFICER REPRESENTATIVE IF HERITAGE RESOURCES OR HUMAN

REMAINS ARE ENCOUNTERED.

NO WORK SHALL BE PERFORMED ON FEDERAL HOLIDAYS OR WEEKENDS WITHOUT PRIOR APPROVAL FROM THE FOREST SERVICE CONTRACTING OFFICER REPRESENTATIVE.

THE CONTRACTOR SHALL PERFORM ALL IN-STREAM WORK BETWEEN JUNE 1ST THROUGH SEPTEMBER 15TH.

TREES SHALL BE CUT BETWEEN NOVEMBER 15TH AND MARCH 31ST.

SPECIFICATIONS:

ALL GRADING COMBINATIONS, AND SIZE REFER TO DOUGLAS FIR UNLESS SHOWN OTHERWISE ON THE PLANS. THE DESIGN VALUES FOLLOW LRFD BRIDGE DESIGN SPECIFICATIONS. THESE ARE THE MINIMUM REQUIREMENTS. OTHER SPECIES MAY BE USED WITH APPROVAL FROM THE FOREST SERVICE CONTRACTING OFFICER

REPRESENTATIVE AND AT NO ADDITIONAL COST TO THE GOVERNMENT.

GRADING:

ALL DOUGLAS FIR-LARCH TO BE GRADED PER WCLIB STANDARD GRADING RULES. SOUTHERN PINE TO BE GRADED PER SPIB.

STEEL BEAMS AND DIAPHRAGMS SHALL BE AASHTO M270 GRADE 50 (GALVANIZED STEEL).

MATERIAL & TREATMENT:

TIMBER PRESERVATION TREATMENT SHALL BE IN ACCORDANCE WITH CURRENT STATE AND/ OR AASHTO SPECIFICATIONS. ALL TIMBER SHALL BE TREATED WITH COPPER

NAPHTHENATE HYDROCARBON SOLVENT A, PER AWPA, UC4B (MINIMUM).

REFERENCE DESIGN VALUES SHOWN ARE PER AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, 10TH EDITION, 2024 (U.N.O.)

DECK PLANK AND BACKER PLANK TO BE 3" SOUTHERN YELLOW PINE, NO.1 (12 INCH WIDE) S2S1E. REFERENCE DESIGN VALUES (KSI): Fbo = 1.00, Fvo = 0.175, Eo = 1,600

CURB TO BE SOUTHERN YELLOW PINE, NO.1 (5X5 AND LARGER) S1S1E. REFERENCE DESIGN VALUES (KSI): Fbo = 1.35, Fvo = 0.175, Eo = 1,500

SCUPPERS, CONTINUOUS PLATE, AND NAILERS TO BE SOUTHERN YELLOW PINE, NO.1 (6 INCH WIDE) S2S1E. REFERENCE DESIGN VALUES (KSI): Fbo = 1.35, Fvo = 0.175, Eo = 1,600

MISCELLANEOUS:

ALL TIMBER TO BE CUT EXACT LENGTH, DRESSED TO SIZE REQUIRED AND ALL PRACTICAL FRAMING TO BE DONE PRIOR TO TREATMENT.

ALL HARDWARE FOR TIMBER CONNECTIONS TO MEET ASTM A307-97 GALVANIZED TO F2329 (A153). ALL HIGH STRENGTH HARDWARE FOR DIAPHRAGM CONNECTIONS TO MEET

ASTM F3125 GRADE A325 TYPE 3 OR GRADE A449 GALVANIZED TO A153.

ALL BOLTED STEEL CONNECTIONS SHALL BE MADE WITH A325 TYPE III BOLTS.

IF GALVANIZED FASTENERS ARE CUT OR DAMAGED IN THE FIELD, THEY SHALL BE REPLACED OR TOUCHED UP WITH COLD GALVANIZING COMPOUND AT THE DISCRETION OF THE

FOREST SERVICE CONTRACTING OFFICER REPRESENTATIVE.

HYDRAULIC DATA:

100 YEAR FREQUENCY

DRAINAGE AREA..............................................................................................................................................0.54 SQ MI

Q100..................................................................................................................................................................780.00 CFS

VELOCITY THRU STRUCTURE.........................................................................................................................11.32 FPS

BRIDGE OPEN AREA THRU STRUCTURE..................................................................................................114.72 SQ FT

FLOW AREA THRU STRUCTURE..................................................................................................................66.17 SQ FT

HIGH WATER ELEVATION...............................................................................................................................3532.77 FT

SCOUR CRITICAL CODE

DESIGN DATA (MP 0.8433):

LOAD RATING (RATING FACTORS):

1 KIP SNOWMOBILE (1.25 DL + 1.75 SL + 1.0 LL, BEAM MOMENT).........................................................................5.54

PEDESTRIAN LOADING (1.25 DL + 1.75 SL + 1.0 LL, BEAM MOMENT)...................................................................1.45

NOTE: LIVE LOAD DEFLECTION DOES NOT EXCEED 1/500 OF THE SPAN LENGTH.

DEAD LOAD:

THE DESIGN UNIT WEIGHT FOR ALL TIMBERS..................................................................................................50 PCF

THE BRIDGE CURB LOAD..................................................................................................................28 PLF (PER SIDE)

SNOW LOAD..........................................................................................................................................................171 PSF

MATERIAL & FABRICATION NOTES:

SHOP DRAWINGS:

THE FABRICATOR SHALL BE RESPONSIBLE FOR THE PREPARATION OF SHOP DRAWINGS FOR THE TIMBER DECK, TIMBER CURB, STEEL BEAMS, AND STEEL DIAPHRAGMS IN

ACCORDANCE WITH THE STANDARD SPECIFICATIONS.

HYDRAULIC DATA:

100 YEAR FREQUENCY

DRAINAGE AREA..............................................................................................................................................0.54 SQ MI

Q100..................................................................................................................................................................260.00 CFS

VELOCITY THRU STRUCTURE...........................................................................................................................5.43 FPS

BRIDGE OPEN AREA THRU STRUCTURE....................................................................................................84.09 SQ FT

FLOW AREA THRU STRUCTURE...................................................................................................................36.57 SQ FT

HIGH WATER ELEVATION................................................................................................................................3530.27 FT

SCOUR CRITICAL CODE

DESIGN DATA (MP 0.9594):

LOAD RATING (RATING FACTORS):

1 KIP SNOWMOBILE (1.25 DL + 1.75 SL + 1.0 LL, BEAM MOMENT).........................................................................5.66

PEDESTRIAN LOADING (1.25 DL + 1.75 SL + 1.0 LL, BEAM MOMENT)...................................................................1.48

NOTE: LIVE LOAD DEFLECTION DOES NOT EXCEED 1/500 OF THE SPAN LENGTH.

DEAD LOAD:

THE DESIGN UNIT WEIGHT FOR ALL TIMBERS..................................................................................................50 PCF

THE BRIDGE CURB LOAD..................................................................................................................28 PLF (PER SIDE)

SNOW LOAD..........................................................................................................................................................171 PSF

GENERAL NOTES:

EXCEPT WHERE OTHERWISE INDICATED ON THESE PLANS OR IN THE SUPPLEMENTAL SPECIFICATIONS, ALL MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH THE FHWA STANDARD

SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS, FP-14.

THE PROPOSED IMPROVEMENTS COVERED BY THESE PLANS ARE IN ACCORDANCE WITH:

LRFD GUIDE SPECIFICATIONS FOR THE DESIGN OF PEDESTRIAN BRIDGES, DECEMBER 2009. WITH

2015 INTERIM REVISIONS.

AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, 10TH EDITION, 2024

AASHTO GUIDELINES FOR GEOMETRIC DESIGN OF LOW-VOLUME ROADS, 2ND EDITION, 2019

FSH 7709.56b TRANSPORTATION STRUCTURES HANDBOOK (USDA FOREST SERVICE)

THE EXISTING STRUCTURE SHALL BE CHECKED AT THE TIME OF STARTING CONSTRUCTION TO SEE THAT ITS RELATIONSHIP TO THE PROPOSED WORK IS AS SHOWN ON THESE PLANS AND ANY DIFFERENCES

REQUIRING CHANGES IN THE NEW WORK SHALL BE REPORTED TO THE PROJECT ENGINEER.

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CONSTRUCTION NOTES:

ALL TIMBER CUT OR DRILLED IN THE FIELD SHALL BE TREATED WITH COPPER NAPHTHENATE.

THE STEEL SUPERSTRUCTURE FROM THE OLD BRIDGE SHALL BE RE-USED FOR THE FOUNDATION OF THE NEW BRIDGE.

THIS WORK SHALL BE PAID FOR AS SUBSTRUCTURE STEEL, SALVAGED, MODIFIED, AND ERECTED.

HELICOPTER TRANSPORT SHALL BE USED UNLESS AN ALTERNATIVE ACCESS PLAN HAS BEEN PROVIDED AND

APPROVED BY THE C.O.

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

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EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

QUANTITIES &

MISCELLANEOUS

DETAILS

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-03

10 3

ABBREVIATIONS (PLAN):

LPSM - LUMP SUM

LNFT - LINEAR FEET

CUYD - CUBIC YARD

SQYD - SQUARE YARD

EA - EACH

LBS - POUNDS

EX - EXISTING

PROP - PROPOSED

NTS - NOT TO SCALE

TYP - TYPICAL

CL - CENTER LINE

CIP - COMPACTED IN PLACE

P.O.B. - POINT OF BEGINNING

P.O.E. - POINT OF ENDING

REF PT - REFERENCE POINT

OHWM - ORDINARY HIGH WATER MARK

OBS WSE - OBSERVED WATER SURFACE ELEVATION

Q100 WSE - 100 YEAR FLOOD WATER SURFACE ELEVATION

F.F. - FRONT FACE

B.F. - BACK FACE

SPA - SPACES

ABUT - ABUTMENT

PL - PLATE

GALV - GALVANIZED

U.N.O. - UNLESS NOTED OTHERWISE

MOBILIZATION15101 LPSM 1

ITEM NO. DESCRIPTION UNITS QUANTITY

CONSTRUCTION SURVEY AND STAKING, METHOD 1, TOLERANCE CLASS C15201 LPSM

SILT SOCK15702 LNFT

REMOVAL OF OLD STRUCTURE, PORTIONS, DISPOSAL METHOD A20304 LPSM

SEEDING, DRY METHOD62503 LPSM

TEMPORARY TRAIL CLOSURE63501 LPSM

STRUCTURE EXCAVATION20801 CUYD 24

SALVAGE BACKFILL, COMPACTION METHOD 720803 CUYD 9

OBJECT MARKERS, CARSONITE, HIGH INTENSITY REFLECTIVITY 63307 EACH 4

MP 0.8433 SUMMARY OF PROJECT QUANTITIES

RIPRAP, CLASS VI25101 CUYD 14

OBJECT MARKER

SCALE: NTS

2'-2"

8"

2'-6"

2'-2"

6'-0"

2'-0"

BEGIN/END

STRUCTURE

TOP OF ROAD

TOP OF

STRUCTURE/

GRND

CARSONITEINSIDE EDGE OF

BRIDGE RAIL OR

TRAVEL WAY

1'-4"

OBJECT MARKERS, CARSONITE,

HIGH INTENSITY REFLECTIVITY

STRUCTURAL STEEL, GALV, FURNISHED, FABRICATED, AND ERECTED55501 LBS 2340

SUBSTRUCTURE STEEL, SALVAGED, MODIFIED, AND ERECTED55501.1 LBS 2312

TREATED STRUCTURAL TIMBER55704 LPSM 1

MOBILIZATION15101 LPSM 1

ITEM NO. DESCRIPTION UNITS QUANTITY

CONSTRUCTION SURVEY AND STAKING, METHOD 1, TOLERANCE CLASS C15201 LPSM

SILT SOCK15702 LNFT

REMOVAL OF OLD STRUCTURE, PORTIONS, DISPOSAL METHOD A20304 LPSM

SEEDING, DRY METHOD62503 LPSM

TEMPORARY TRAIL CLOSURE63501 LPSM

STRUCTURE EXCAVATION20801 CUYD 36

SALVAGE BACKFILL, COMPACTION METHOD 720803 CUYD 9

OBJECT MARKERS, CARSONITE, HIGH INTENSITY REFLECTIVITY 63307 EACH 4

MP 0.9594 SUMMARY OF PROJECT QUANTITIES

RIPRAP, CLASS VI25101 CUYD 21

STRUCTURAL STEEL, GALV, FURNISHED, FABRICATED, AND ERECTED55501 LBS 2340

SUBSTRUCTURE STEEL, SALVAGED, MODIFIED, AND ERECTED55501.1 LBS 1054

TREATED STRUCTURAL TIMBER55704 LPSM 1

EARTH BERMS15705 LNFT 30

UNDERDRAIN SYSTEM, 6-INCH60501 LNFT 30

UNDERDRAIN SYSTEM, 6-INCH60501 LNFT 30

EARTH BERM DETAIL

SCALE: NTS

12.0'

3.0'3-INCH TOPSOIL,

SEED, AND MULCH

EMAT

SAND FILL 1

EXISTING

GROUND

NOTE:

ALL ITEMS TO BE INCLUDED IN PAY ITEM, EARTH BERMS:

EMBANKMENT, EMAT, TOPSOIL, SEEDING, AND MULCH.

ESTIMATED QUANTITIES:

TOPSOIL = 45 SQYD

EMAT = 45 SQYD

EMBANKMENT = 20 CYD

SNOWMOBILES

ONLY

STEEL POST SIGN DETAIL

SCALE: NTS

42" (MIN.)

6'-6"

(MAX.)

5'-11 2"

POST, STEEL, 3 LB

(10 FEET)

EXISTING GROUND

1'-31 2"

SIGNS, TYPE III SHEETING

1'-0"

POST, STEEL, 3 LB63306 LNFT 10

SIGNS, TYPE III SHEETING63301 SQFT 1

POST, STEEL, 3 LB63306

SIGNS, TYPE III SHEETING63301 SQFT 1

LNFT 10

SALVAGED AND UNUSED

BEAMS MAY BE BURIED IN

THE EARTH BERM AT THE

DISCRETION OF THE C.O.

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TRAFFIC CONTROL PLAN - TRAIL CLOSURE

PROJECT

LOCATION

(2) TYPE III BARRICADES, LIGHTED

AT EACH END OF WORK ZONE

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

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EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

TEMPORARY

TRAIL CLOSURE

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-04

10 4

TRAFFIC CONTROL PLAN KEY

SIGN

TYPE III BARRICADE

MOUNTED

ON BARRICADE

W20-3

R11-2

W20-3

ALL SIGNS, EXCEPT THOSE MOUNTED ON TYPE III BARRICADES SHALL BE

MOUNTED ON DRIVEN POSTS AT A 7 FOOT BOTTOM HEIGHT.

DETOUR NOTES:

TRAIL WILL BE CLOSED AND DETOUR ROUTE IS NOT AVAILABLE FOR THE

PROJECT LOCATION.

TO GORHAM

TUCKERMAN RAVINE TRAIL

HUNTINGTON RAVINE TRAIL

BOOTT SPUR TRAIL

APPALACHIAN

NATIONAL

SCENIC TRAIL

NH-16

APPALACHIAN

NATIONAL

SCENIC TRAIL

(2) TYPE III BARRICADES, LIGHTED

AT EACH END OF WORK ZONE

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TRAIL CLOSED

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TRAIL CLOSED AHEAD

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350 FEET

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TRAIL CLOSED AHEAD

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HUNTINGTON RAVINE TRAIL

HUNTINGTON RAVINE TRAIL

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

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E #2

&3 .D

W G

EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

TYPICAL SECTIONS

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-05

10 5

SCALE: NTS

PROPOSED BRIDGE SECTION

7.0' DECK O-O

6.0' CLEAR ROADWAY

PLAN GRADE

FLATFLAT

W10x30 (TYP.)

2.5'

SCALE: NTS

EXISTING TYPICAL SECTION (STA 9+75 - STA 9+77)

VARIES

EX BASE - UNKNOWN

(VAR.)

VARIES

(VAR.)

SCALE: NTS

PROPOSED TYPICAL SECTION (STA 9+80 - STA 9+87)

3.0'

6.0'

EXISTING

GROUND

2.0%2.0%

SEEDING, DRY METHOD

(TYP)

3.0'

MATCH

SALVAGE BACKFILL,

COMPACTION METHOD 7

6.0' PAY LIMITS OF

SALVAGE BACKFILL,

COMPACTION METHOD 7

12.0' (VAR.)

EX GRADE

(STA 10+27 - STA 10+73)

(STA 10+13 - STA 10+20)

SCALE: NTS

EXISTING MP 0.8433 BRIDGE SECTION

12.0' DECK O-O

6.0' 6.0'

EXISTING

GRADE

FLATFLAT

3" THICK TRANSVERSE

PLANK DECK

EXISTING W21x68

(TYP.)

3.54' 3.54' 3.54'

MATCH

PLAN GRADE

2.5'

SCALE: NTS

EXISTING MP 0.8433 APPROACH SECTION

12.0' DECK O-O

6.0' 6.0'

EXISTING

GRADE

FLATFLAT

3" THICK TRANSVERSE

PLANK DECK

EXISTING 8x10"

TIMBERS (TYP.)

3.54' 3.54' 3.54'

SCALE: NTS

EXISTING MP0.9594 BRIDGE SECTION

12.0' DECK O-O

6.0' 6.0'

EXISTING

GRADE

FLATFLAT

3" THICK TRANSVERSE

PLANK DECK

EXISTING W16x31

(TYP.)3.08' 3.08' 3.08'

(STA 11+07 - STA 11+08)

(STA 10+68 - STA 10+73)

(STA 10+99 - STA 11+04)

REMOVE OF OLD STRUCTURE

PORTIONS, DISPOSAL METHOD A

REMOVE OF OLD STRUCTURE

PORTIONS, DISPOSAL METHOD A

REMOVE OF OLD STRUCTURE

PORTIONS, DISPOSAL METHOD A

SUBSTRUCTURE STEEL,

SALVAGE, MODIFIED, AND

ERECTED

SUBSTRUCTURE STEEL,

SALVAGE, MODIFIED, AND

ERECTED

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CP1

CP2

CP3

CP5

BM1

BM2

CP8

BM3

35353530

35403541

10+00

11+00

N57° 11' 56"E

26.00' N73° 28' 03"E

38.52'

PC STA = 9+32.18

N = 644560.4850

E = 1086021.7389

PI STA = 9+59.76

N = 644581.1318

E = 1086040.0267

PT STA = 9+87.00

N = 644596.0734 E = 1086063.2103

= 15.67 R = 200.49'

T = 27.58' L = 54.82'

PC STA = 10+13.00

N = 644610.1582 E = 1086085.0648

PI STA = 10+41.65

N = 644625.6805 E = 1086109.1496

PT STA = 10+69.92

N = 644633.8342 E = 1086136.6185

= 16.27 R = 200.47' T = 28.65' L = 56.92'

PC STA = 11+08.44

N = 644644.7950

E = 1086173.5445

PI STA = 11+37.33

N = 644653.0169 E = 1086201.2432

PT STA = 11+63.24

N = 644639.3078

E = 1086226.6770 = 44.86

R = 70.00' T = 28.89' L = 54.80'

BM4

PC

: 1

0+

.0

PC

: 1

1+

.4

PT

: 9

+8 7.

PT

: 1

0+

.9

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

5/1 4/2

5 1 5:

JA

LL

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DG

E #2

&3 .D

W G

EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

HUNTINGTON RAVINE TRAIL

@ MP 0.8433 & MP 0.9594

PLAN OF SITE

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-06

10 6

GENERAL NOTES:

1. COORDINATE SYSTEM REFERS TO NAD83 NEW HAMPSHIRE STATE PLANES, US

FOOT. DATUM REFERS TO NAVD88.

2. REFERENCE POINTS "A", "B", "C", AND "D" REFER TO FINISH GRADE AT CENTERLINE

AT THE ENDS OF THE PROPOSED BRIDGE BEAMS.

3. PROVIDE SMOOTH TRANSITION FROM EXISTING TO PROPOSED TRAIL AT THE

ENDS OF EACH BRIDGE APPROACH. FADE OR EXTEND PROFILE SLIGHTLY AS

REQUIRED.

4. ANY DAMAGE TO THE EXISTING TRAIL OUTSIDE OF THE CONSTRUCTION LIMITS

WILL BE REPAIRED BY THE CONTRACTOR AT NO EXTRA COST.

5. SURVEY WAS COMPLETED BY OTHERS FOR THIS PROJECT ON 8-1-2012.

DESCRIPTION

HORIZONTAL AND VERTICAL CONTROL

LOCATION

STA / OFFSET NORTHING EASTING ELEVATIONPOINT

BM3

LEGEND

BENCHMARK

TREE LINE

EDGE OF TRAIL

PROPOSED EXISTING

SILT SOCK

RIPRAP

BM2

BM1 9+85.89, 11.8' LT 1086055.8655644605.3095 3536.42 BENCHMARK

GENERAL PLAN OF SITE

PROPOSED

SLOPE STAKE LINE

(TYP)

P.O.E.

REF PT "F"

EXISTING BRIDGE AND

APPROACHES TO BE REMOVED

P.O.B.

REF PT "E"

REF

PT "A"

REF

PT "B"

HUNTINGTON

RAVINE TRAIL CONSTRUCTION

10+30.56, 13.7' RT

11+10.24, 9.6' RT

BACKFILL BASE

REFERENCE POINTS

LOCATION

STATION NORTHING EASTING ELEVATIONPOINT

C D

B A

10+73.00

9+87.00 10+13.00

10+99.00

SOIL EROSION CONTROL REQUIREMENTS

SEEDING FACILITATES ESTABLISHMENT OF VEGETATIVE COVER.

EFFECTIVE FOR DRAINAGEWAYS WITH LOW VELOCITY.

EASILY PLACED IN SMALL QUANTITIES BY INEXPERIENCED

PERSONNEL. SHOULD INCLUDE PREPARED TOPSOIL BED.

KEY DETAIL CHARACTERISTICS

RIPRAP USED WHERE VEGETATION IS NOT EASILY ESTABLISHED.

EFFECTIVE FOR HIGH VELOCITIES OR HIGH

CONCENTRATIONS. PERMITS RUNOFF TO INFILTRATE

SOIL. DISSIPATES ENERGY FLOW AT SYSTEM OUTLETS.

54 SILT SOCK FILTERS AND DETAINS RUNOFF.

PROPOSED 6' WIDE

SALVAGE BACKFILL,

COMPACTION METHOD 7

(TYP)

PROPOSED

STRUCTURE

STA. 10+00

PROPERTY OWNER:

WHITE MOUNTAIN

NATIONAL FOREST

HUNTINGTON

RAVINE TRAIL

6'

EXISTING EDGE OF WATER

CU

TL

ER

R

IV

ER

3536.04 3536.04

3533.54 3533.54

EXISTING

ANCHOR CABLE

REF PT "C"

REF

PT "D"

6'

CU

TL

ER

R

IV

ER

C U

TL

ER

R

IV

ER

C U

TL

ER

R

IV

ER

PROPERTY OWNER:

WHITE MOUNTAIN

NATIONAL FOREST

PROPERTY OWNER:

WHITE MOUNTAIN

NATIONAL FOREST

PROPERTY OWNER:

WHITE MOUNTAIN

NATIONAL FOREST

PROPERTY OWNER:

WHITE MOUNTAIN

NATIONAL FOREST

PROPERTY OWNER:

WHITE MOUNTAIN

NATIONAL FOREST

PROPOSED

STRUCTURE

STA. 10+86

EXISTING EDGE OF WATER

EXISTING EDGE OF WATER

SILT SOCK

(TYP)

EXISTING BRIDGE AND

APPROACH TO BE REMOVED

EXISTING

ROCK/BOULDER

EXISTING

ROCK/BOULDER

EXISTING

ROCK/BOULDER

Feet 0 8 16E 9+79.84 1086057.2668644592.0910 3535.73

F 11+03.67 3532.67

1086164.4957644642.1092 1086139.5706644634.7105 1086085.0648644610.1583 1086063.2104644596.0733

1086169.0046644643.4474

BM4 10+71.27, 9.6' LT

CP1 9+94.83, 0.0'

CP2 10+97.27, 0.0'

CP3 9+56.77, 2.1' LT

CP5 10+40.84, 2.2' LT

CP8 11+16.41, 0.5' LT

1086106.6023644606.8962 3529.26 BENCHMARK

1086177.7807644635.9973 3532.19 BENCHMARK

1086135.1876644643.3950 3533.65 BENCHMARK

1086069.8052644600.2871 MAG NAIL

1086162.8300644641.6327 MAG NAIL

1086037.7547644579.4008 DH SET

1086108.5301644625.5362 SPIKE

1086181.2168644647.0740 DH SET

6'

MAINTAIN EXISTING GRADE

STA 10+19.53 STA 10+68.00

54 EARTH BERM

(30' LENGTH)

"SNOWMOBILES ONLY"

(SIGN, TYPE III SHEETING

POST, STEEL, 3 LB)

"SNOWMOBILES ONLY"

(SIGN, TYPE III SHEETING

POST, STEEL, 3 LB)

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CP1

10+00 N57° 11' 56"E

26.00'

PC

: 1

0+

.0

PT

: 9

+8 7.

0.00%

-15.23%

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

5/1 4/2

5 1 5:

JA

LL

EN

Z:

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W G

EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

HUNTINGTON RAVINE

TRAIL @ MP 0.8433

PLAN OF STRUCTURE

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-07

10 7

PROPOSED

SLOPE STAKE LINE

(TYP)

SILT SOCK (TYP)

EXISTING EDGE OF WATER

HUNTINGTON

RAVINE TRAIL

CONSTRUCTION

AND SURVEY

CENTERLINE

EXISTING STRUCTURE

(TO BE REMOVED)

BRIDGE PLAN

BRIDGE ELEVATION

PROPOSED GRADE

REF PT "B"

STA: 10+13

REF PT "A"

STA: 9+78

SALVAGED BACKFILL,

COMPACTION METHOD 7

OBJECT MARKERS, CARSONITE,

HIGH INTENSITY REFLECTIVITY

REF PT "A"

PROP. LOW CHORD = 3534.77'

3532.48

SCUPPER: 4 SPA @ 5'-9" = 23'-0"1'-6"

26'-0" BRIDGE CURB

W10x30

6'-0"

CLEAR

7'-0"

DECK

O-O

PROPOSED

STRUCTURE

STA. 10+00

26'-0" (OVERALL BRIDGE LENGTH - REF. PT. A TO REF. PT. B)

HUNTINGTON

RAVINE TRAIL

OBJECT MARKERS,

CARSONITE, HIGH

INTENSITY REFLECTIVITY

OBJECT MARKERS, CARSONITE,

HIGH INTENSITY REFLECTIVITY

OBJECT MARKERS, CARSONITE,

HIGH INTENSITY REFLECTIVITY

90°

PROPOSED 6' WIDE

SALVAGED BACKFILL,

COMPACTION METHOD 7

(TYP)

SILT SOCK (TYP)

STA: 10+19.53P.O.B.

REF PT "E"

C U

TL

ER

R

IV

ER

CU

TL

ER

R

IV

ER

Feet 0 2 4

1.5

1'-6"

3532.48

1.5

Q100 WSE = 3532.77'

STREAM BED

EL 3527.17' (+/-)

@ STA. 10+00

OBS WSE =

3527.47'

REF PT "B"

5'-10"

2'-8"

1'-0"

(TYP)

1'-0"

(TYP)

PROPOSED

RIPRAP, CLASS VI

(TYP)

EXISTING BOULDER TO REMAIN

SUBSTRUCTURE STEEL,

SALVAGE, MODIFIED,

AND ERECTED (TYP)

PROPOSED

RIPRAP, CLASS VI

(TYP)

LIMITS OF:

SALVAGED BACKFILL,

COMPACTION METHOD 7

LIMITS OF:

STRUCTURE EXCAVATION

EXISTING BOULDER

TO REMAIN

P.O.B.

REF PT "E"

STA: 10+19.53

PROPOSED BRIDGE, CL STA 10+00 & STA 10+86:

26 FOOT (OVERALL LENGTH) SINGLE SPAN STEEL GIRDER BRIDGE WITH

A TIMBER PLANK DECK ON STEEL GRADE BEAM FOUNDATIONS.

EXISTING BRIDGES (TO BE REMOVED) CL STA 10+00.00:

MP 0.8433 - 49 FOOT (OVERALL LENGTH) x 12'-0" FOOT WIDE (O-O) STEEL

GIRDER BRIDGE WITH TIMBER APPROACHES ON STACKED TIMBER SILLS.

EXISTING LOW CHORD = 3533.89'

UNDERDRAIN SYSTEM, 6 INCH

INV EL = 3534.00

PROPOSED RIPRAP, CLASS VI (BEHIND BOULDER)

4'-3"

3'-9"

EXISTING STRUCTURE

(TO BE REMOVED)

REMOVAL OF OLD

STRUCTURE, PORTIONS,

DISPOSAL METHOD A

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STA. 10+00

CP2

BM3

11+00N73° 28' 03"E 38.52'

BM4

PC

: 1

1+

.4

PT

: 1

0+

.9

0.00%

-22.50% 5.03%

13.87%

DRAWING TITLE

PROJECT NAME

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

5/1 4/2

5 1 5:

JA

LL

EN

Z:

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A

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R 9 T

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&3 .D

W G

EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

HUNTINGTON RAVINE

TRAIL @ MP 0.9594

PLAN OF STRUCTURE

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-08

10 8

PROPOSED

SLOPE STAKE LINE

(TYP)

SILT SOCK (TYP)

EXISTING EDGE OF WATER

HUNTINGTON

RAVINE TRAIL

CONSTRUCTION

AND SURVEY

CENTERLINE

EXISTING STRUCTURE

(TO BE REMOVED)

BRIDGE PLAN

BRIDGE ELEVATION

PROPOSED GRADE

EXISTING

GROUND

AT TOE

PER PLAN

RIPRAP, CLASS VI

RIPRAP DETAIL

SCALE: NTS

REF PT "D"

STA: 10+99REF PT "C"

STA: 10+73

PROPOSED

RIPRAP, CLASS VI

(TYP)

SALVAGED BACKFILL,

COMPACTION METHOD 7

3'-9"

3'-9"

OBJECT MARKERS, CARSONITE,

HIGH INTENSITY REFLECTIVITY

3'-9"

NOTE: FOR RIPRAP ALONG SIDES OF

CHANNEL, EXCAVATE EXISTING SOILS

DOWN TO PROPOSED BOTTOM OF RIPRAP.

RIPRAP DEPTH MAY BE REDUCED IF

BEDROCK IS ENCOUNTERED.

3'-9"

2'-0"

(PER

PLAN)

FLAT

REF PT "C"

SCUPPER: 4 SPA @ 5'-9" = 23'-0"1'-6"

26'-0" BRIDGE CURB

W10x30

6'-0"

CLEAR

7'-0"

DECK

O-O

PROPOSED

STRUCTURE

STA. 10+86

26'-0" (OVERALL BRIDGE LENGTH - REF. PT. C TO REF. PT. D)

HUNTINGTON

RAVINE TRAIL

OBJECT MARKERS, CARSONITE,

HIGH INTENSITY REFLECTIVITY

OBJECT MARKERS,

CARSONITE, HIGH

INTENSITY REFLECTIVITY

OBJECT MARKERS, CARSONITE,

HIGH INTENSITY REFLECTIVITY

90° PROPOSED 6' WIDE

SALVAGED BACKFILL,

COMPACTION METHOD 7

(TYP)

SILT SOCK (TYP)

P.O.E.

REF PT "F"

C U

TL

ER

R

IV

ER

CU

TL

ER

R

IV

ER

Feet 0 2 4

STA: 10+68.00

1'-6"

1.5Q100 WSE = 3530.27'

STREAM BED

EL 3527.45' (+/-)

@ STA. 10+86

OBS WSE =

3527.83'

REF PT "D"

7'-0"

3'-10"

1'-4"

(TYP)

8'-3"

5'-2"

1'-4"

(TYP)

PROPOSED

RIPRAP, CLASS VI

(TYP)

2'-0"

SUBSTRUCTURE STEEL,

SALVAGE, MODIFIED,

AND ERECTED (TYP)

LIMITS OF:

STRUCTURE EXCAVATION

P.O.E.

REF PT "F"

STA 10+68.00

PROPOSED BRIDGE, CL STA 10+00 & STA 10+86:

26 FOOT (OVERALL LENGTH) SINGLE SPAN STEEL GIRDER BRIDGE WITH

A TIMBER PLANK DECK ON STEEL GRADE BEAM FOUNDATIONS.

EXISTING BRIDGES (TO BE REMOVED) CL STA 10+86.00:

MP 0.9594 - 34 FOOT (OVERALL LENGTH) x 12'-0" FOOT WIDE (O-O) STEEL

GIRDER BRIDGE WITH TIMBER APPROACHES ON STACKED TIMBER SILLS.

PROP. LOW CHORD = 3532.27'

3530.42

1.5

3530.42

LIMITS OF:

SALVAGED BACKFILL,

COMPACTION METHOD 7

EXISTING LOW CHORD = 3531.84'UNDERDRAIN SYSTEM, 6 INCH

INV EL = 3531.50

EXISTING STRUCTURE

(TO BE REMOVED)

REMOVAL OF OLD

STRUCTURE, PORTIONS,

DISPOSAL METHOD A

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STA. 10+86

DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

5/1 4/2

5 1 5:

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LL

EN

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E

#2 \H

UN

TI

NG

TO

N

RA

VI

NE

T

RA

IL

B

RI

DG

E #2

&3 .D

W G

EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

ABUTMENT PLAN

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-09

10 9

8'-63 4"

1'-91 2" 2'-6" 2'-6" 1'-91

2"

SCALE: NTS

MP 0.8433 ABUTMENT PLAN

REF PT

PROPOSED W10x30

EXISTING W21x68

EXISTING W21x68

A

A

SCALE: NTS

ABUTMENT SECTION A-A

PROPOSED

W10x30

2"101

2"

EXISTING W21x68

7'-10"

1'-5" 2'-6" 2'-6" 1'-5"

SCALE: NTS

MP 0.9594 ABUTMENT PLAN

REF PT

PROPOSED W10x30

EXISTING W16x31

B

B

SCALE: NTS

ABUTMENT SECTION B-B

R

EF

. P T.

8"8"

EXISTING W16x31

EXISTING W16x31

EXISTING W16x31

(SUBSTRUCTURE STEEL,

SALVAGED, MODIFIED,

AND ERECTED)

(4) 3/4"Ø HOLES FOR 5/8"Ø

A325 BOLTS (TYP.)

2" 2"

2"

4"

2"

PROPOSED 1/2" STEEL

WEB STIFFENER (TYP.)

PROPOSED

W10x30

1/4" 1/4"

EXISTING W21x68

(SUBSTRUCTURE STEEL,

SALVAGED, MODIFIED,

AND ERECTED)

(4) 3/4"Ø HOLES FOR 5/8"Ø

A325 BOLTS (TYP.)

1" 1"

2"

4"

2"

PROPOSED 1/2" STEEL

WEB STIFFENER (TYP.)

NOTE:

1. THE BEAMS SALVAGED FROM THE OLD

SUPERSTRUCTURE ARE TO BE CUT IN HALF AND

PLACED AS SHOWN FOR NEW FOUNDATIONS.

2. ANY REMAINING SALVAGED STEEL (NOT SHOWN) IS

TO BE TACK WELDED TO FOUNDATION STEEL AND

BURIED IN THE APPROACHES. ALTERNATIVELY,

REMAINING STEEL MAY BE BURIED IN THE EARTH

BERM (SEE C-03).

3. DO NOT BACKFILL THE FOUNDATIONS/STRUCTURE

UNTIL THE SUPERSTRUCTURE HAS BEEN PLACED

AND SECURED.

1/4"

SEE BACKER PLANK

CONNECTION ON

SHEET C-10

SEE BACKER PLANK

CONNECTION ON

SHEET C-10

2"

C L

BE

AR

IN

G

4"

PROPOSED 1/2" STEEL WEB STIFFENER

(NON-GALVANIZED)(INCLUDE WITH

SUBSTRUCTURE STEEL, SALVAGED,

MODIFIED, AND ERECTED)

1/4"

1/4" 1/4"

R

EF

. P T.

C L

BE

AR

IN

G

4"

4"

PROPOSED 1/2" STEEL WEB STIFFENER

(NON-GALVANIZED)(INCLUDE WITH

SUBSTRUCTURE STEEL, SALVAGED,

MODIFIED, AND ERECTED)

BEARING EL =

3530.92

BEARING EL =

3532.98

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DRAWN

DESIGNER

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DWG SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

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EASTERN REGION

HUNTINGTON RAVINE

TRAIL BRIDGES #2 & #3

REPLACEMENT

@ MP 0.8433 & MP 0.9594

WHITE MOUNTAIN

NATIONAL FOREST

ANDROSCOGGIN

RANGER DISTRICT

STRUCTURE DETAILS

5/16/2025

D.CARTER

J.ALLEN

G.JUNTTILA

U28-04493

C-10

10 10

SECTION AT SCUPPER

SCALE: NTS

SECTION A-A

SCALE: NTS

DIAPHRAGM CONNECTION

SCALE: NTS

SECTION B-B

SCALE: NTS

3 x 6" TIMBER NAILER, (TYP.)

(2 1/2") (S2S1E)

3" x 12" DECK

PLANKS, S2S1E

(2 1/2")

3" DECK (NOM.)

C8x11.5 DIAPHRAGM

1/2"

3" M

IN

STRUCTURAL STEEL, GALV,

FURNISHED, FABRICATED,

AND ERECTED

(L4" x 4" x 1/2" x 6")C8 - OMIT AT FASCIA

13/16"Ø HOLES FOR 3/4"Ø

A325 BOLTS (TYP.)

BEAM, DIAPHRAGM, DECK PLAN

SCALE: NTS

2'-6"

2'-6"

C L

RO

AD

W

AY

B

RI

DG

E

26'

13'

STRUCTURAL STEEL, GALV,

FURNISHED, FABRICATED, AND

ERECTED (W10x30)

BOLTED CONNECTIONS

PER DIAPHRAGM

CONNECTION DETAIL (TYP.)

13'

5/8"x15" BOLT (A449) WITH (2)

MALLEABLE IRON WASHERS

(UNDER HEAD AND NUT).

FIELD DRILL CURB AND DECK

3" x 6" x 3'-0" SCUPPER, S2S1E (TYP.)

6" x 6" CURB, S1S1E

1'-41 2" 1'-41

2"

CL

NOTE:

CONTRACTOR IS TO ASSEMBLE CURB & SCUPPER IN PLACE,

MARK & DRILL THRU DECK, DISASSEMBLE, REASSEMBLE &

BOLT DOWN.

9" 3" x 6"

SCUPPER,

S2S1E, SHOP DRILL

6" x 6" CURB, S1S1E, SHOP DRILL

A

A

2" 3" 11

2"

WEB STIFFENER DETAILS

SCALE: NTS

4"

1'-73 4"

2"

1'-3"

PROPOSED 1/2" STEEL

WEB STIFFENERPROPOSED 1/2" STEEL

WEB STIFFENER

3/4" CHAMFER

(TYP.)

3/4" CHAMFER

(TYP.)

MP 0.8433 MP 0.9594

2" x 6" CONT.

PLATE (S2S1E)

2" x 6" CONT. PLATE

(4) 5/16" x 4" GRK-RSS

SCREWS OR EQUAL

(OTHER SCREWS NOT

SHOWN FOR CLARITY)

3/4"Ø x 5" HEX HD. BOLT W/ (1) 3/4"

CUT WASHER & (1) 3/4" LUCK NUT,

COUNTERSUNK (TYP.)

BACKER PLANK CONNECTION

SCALE: NTS

3" M

IN

L4" x 4" x 1/2" x 6"

13/16"Ø HOLES FOR 3/4"Ø

A325 BOLTS (TYP.)

5/16" x 8" GRK-RSS

SCREWS OR EQUAL

3" x 12" BACKER

PLANK, S2S1E

(2 1/2")

DECK PLANK (TYP.)

SCREW (4 AT EA. BEAM, EA PLANK)

BOLT (STAGGER AT 48" O.C.)

NAILER (TYP.)

B

B

3/8"± GAP (TYP.)

3" x 12" BACKER PLANK 7'-0"

STRUCTURAL STEEL, GALV,

FURNISHED, FABRICATED, AND

ERECTED (C8x11.5)

NOTE:

1. DECK PLANK, BACKER PLANK, NAILER, CURB,

SCUPPERS, CONTINUOUS PLATE, CURB HARDWARE,

DECK SCREWS, AND NAILER HARDWARE SHALL BE

INCLUDED WITH "TREATED STRUCTURAL TIMBER".

2. HARDWARE FOR DIAPHRAGM AND BACKER PLANK

CONNECTIONS TO BE INCLUDED WITH

"STRUCTURAL STEEL, GALV, FURNISHED,

FABRICATED, AND ERECTED".

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