Huntington Ravine Trail Bridges 4 and 5 Plans.pdf
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- Solicitation number
- 12445525B0013
- Issued by
-
Department of Agriculture Forest Service
About this file
These are design and construction documents for the United States Department of Agriculture Forest Service's project to replace two trail bridges in the White Mountain National Forest, Androscoggin Ranger District, New Hampshire. The project involves replacing Trail Bridge #4 at MP 0.1202 and Trail Bridge #5 at MP 0.3312 on the Huntington Ravine Trail, located near the Appalachian National Scenic Trail.
The bridges will be single-span steel stringer bridges with timber plank decks on steel grade beam foundations, with 30-foot and 24-foot overall lengths respectively. The project includes removing existing bridges, installing new bridges, constructing approaches, placing riprap, and restoring slopes. The work will require trail closure, with no detour route available. Key specifications include using salvaged steel from the old bridges for new foundations, galvanized structural steel, treated timber, and specific installation and material requirements. The project is scheduled for completion by July 1, 2025, with construction restricted to between November 15th and March 31st, and subject to Forest Service oversight.
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Text version
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 7/1/2025
C-02 DESIGN DATA & GENERAL NOTES 7/1/2025
C-03 QUANTITIES & MISCELLANEOUS DETAILS 7/1/2025
C-04 TEMPORARY TRAIL CLOSURE 7/1/2025
C-05 TYPICAL SECTIONS 7/1/2025
C-06 MP 0.1202 PLAN OF SITE 7/1/2025
C-07 MP 0.1202 PROFILE OF SITE 7/1/2025
C-08 MP 0.3312 PLAN OF SITE 7/1/2025
C-09 MP 0.3312 PROFILE OF SITE 7/1/2025
C-10 MP 0.1202 PLAN OF STRUCTURE 7/1/2025
C-11 MP 0.3312 PLAN OF STRUCTURE 7/1/2025
C-12 ABUTMENT PLAN 7/1/2025
C-13 STRUCTURE DETAILS 7/1/2025
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 1.4 MILES TO THE BRIDGE LOCATION.
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.D W
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EASTERN REGION
WHITE MOUNTAIN NATIONAL FOREST - ANDROSCOGGIN RANGER DISTRICT
COOS COUNTY
NEW HAMPSHIRE
HUNTINGTON RWAT TRAIL BRIDGES #4 & #5
REPLACEMENT @ MP 0.1202 & MP 0.3312
STRUCTURE NUMBER:
TRAIL BRIDGE #4 MP 0.1202
092202-95461-0.1202 (LAT 44.270392, LONG -71.280218)
TRAIL BRIDGE #5 MP 0.3312
092202-95461-0.3312 (LAT 44.271836, LONG -71.281701)
PROPOSED STRUCTURE DESCRIPTION:(BOTH)
30 FOOT (MP 0.1202) AND 24 FOOT (MP 0.3312) (OVERALL LENGTHS) SINGLE SPAN STEEL
STRINGER BRIDGES WITH A TIMBER PLANK DECK ON STEEL GRADE BEAM FOUNDATIONS.
RECOMMENDED BY:
FOREST ENGINEER
DISTRICT RANGER
DATE
APPROVED:
R9 DIRECTOR OF ENGINEERING DATE
DATE
FOREST SUPERVISOR DATE
R9 BRIDGE PROGRAM MANAGER DATE
PROJECT
LOCATIONS
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 RWAT
TRAIL BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
DESIGN DATA &
GENERAL NOTES
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-02
13 2
HYDRAULIC DATA:
100 YEAR FREQUENCY
DRAINAGE AREA..............................................................................................................................................0.45 SQ MI
Q100..................................................................................................................................................................943.00 CFS
VELOCITY THRU STRUCTURE...........................................................................................................................2.17 FPS
BRIDGE OPEN AREA THRU STRUCTURE...................................................................................................78.78 SQ FT
FLOW AREA THRU STRUCTURE...................................................................................................................78.78 SQ FT
HIGH WATER ELEVATION...............................................................................................................................3790.53 FT
SCOUR CRITICAL CODE
DESIGN DATA (MP 0.1202):
LOAD RATING (RATING FACTORS):
1 KIP SNOWMOBILE (1.25 DL + 1.75 SL + 1.0 LL, DECK MOMENT).........................................................................3.86
PEDESTRIAN LOADING (1.25 DL + 1.75 SL + 1.0 LL, BEAM MOMENT)...................................................................1.25
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
HYDRAULIC DATA:
100 YEAR FREQUENCY
DRAINAGE AREA..............................................................................................................................................0.40 SQ MI
Q100..................................................................................................................................................................872.00 CFS
VELOCITY THRU STRUCTURE...........................................................................................................................3.84 FPS
BRIDGE OPEN AREA THRU STRUCTURE....................................................................................................66.64 SQ FT
FLOW AREA THRU STRUCTURE...................................................................................................................35.92 SQ FT
HIGH WATER ELEVATION................................................................................................................................3927.45 FT
SCOUR CRITICAL CODE
DESIGN DATA (MP 0.3312):
LOAD RATING (RATING FACTORS):
1 KIP SNOWMOBILE (1.25 DL + 1.75 SL + 1.0 LL, DECK MOMENT)........................................................................3.86
PEDESTRIAN LOADING (1.25 DL + 1.75 SL + 1.0 LL, SERVICE 1)...........................................................................2.77
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:
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.
ANY DAMAGE TO THE EXISTING TRAIL OUTSIDE OF THE CONSTRUCTION LIMITS WILL BE REPAIRED, STABILIZED AND APPROVED BY THE FOREST SERVICE CONTRACTING OFFICER REPRESENTATIVE PRIOR TO THE CONTRACT CLOSEOUT, BY THE CONTRACTOR AT NO EXTRA COST.
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.
TREES SHALL BE CUT BETWEEN NOVEMBER 15TH AND MARCH 31ST.
ALLOW FOR A TWO WEEK CLOSURE OF THE SHERBURNE SKI TRAIL IN THE WINTER TO ALLOW FOR TRANSPORT OF MATERIALS TO THE CONSTRUCTION SITE. NO EQUIPMENT WILL BE ON THE SHERBURNE SKI TRAIL ON WEEKENDS/HOLIDAYS OUTSIDE OF THE CLOSURE PERIOD. TIMING AND ACCESS TO BE DISCUSSED AT THE PRE-BID MEETING. THE FOREST SERVICE CONTRACTING OFFICER REPRESENTATIVE MUST APPROVE AN ACCESS TRAIL CLOSURE PLAN.
APPROACHES MAY BE BUILT WITH COBBLES, BOULDERS, SOIL AND OTHER MATERIALS SALVAGED FROM THE SITE. THE APPROACHES MAY BE RUDIMENTARY AND NOT REQUIRE PRECISE GRADING. THE APPROACHES SHALL BE APPROVED BY THE FOREST SERVICE CONTRACTING OFFICER REPRESENTATIVE PRIOR TO COMPLETION.
SPECIFICATIONS:
ALL GRADING COMBINATIONS, AND SIZES 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 WITH GREATER THAN OR EQUAL DESIGN VALUES, SUCH AS SOUTHERN YELLOW PINE 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). ALL DOUGLAS FIR-LARCH SHALL BE INCISED PRIOR TO TREATMENT.
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" DOUGLAS FIR-LARCH, NO. 2 (> 2 INCH WIDE) S2S1E. REFERENCE DESIGN VALUES (KSI): Fbo = 0.90, Fvo = 0.18, Eo = 1,600
CURB TO BE DOUGLAS FIR-LARCH, NO. 2 (5X5 AND LARGER) S1S1E. REFERENCE DESIGN VALUES (KSI): Fbo = 0.875, Fvo = 0.17, Eo = 1,300
SCUPPERS, CONTINUOUS PLATE, AND NAILERS TO BE DOUGLAS FIR-LARCH, NO. 2 (> 2 INCH WIDE) S2S1E. REFERENCE DESIGN VALUES (KSI): Fbo = 0.90, Fvo = 0.18, 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.
MATERIAL & FABRICATION NOTES:
SHOP DRAWINGS:
THE FABRICATOR SHALL BE RESPONSIBLE FOR THE PREPARATION OF SHOP DRAWINGS FOR STEEL BEAMS AND STEEL DIAPHRAGMS IN ACCORDANCE WITH THE STANDARD
SPECIFICATIONS.
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.
COORDINATE PARTICULAR METHOD(S) AND OPERATIONS OF TRANSPORTATION OF MATERIALS, VIA TRAIL, HELICOPTER, ETC. WITH FOREST SERVICE COR FOR DATES, GROUND CONDITION, PERMITS, ETC.
DRAWING TITLE
PROJECT NAME
DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
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EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
QUANTITIES &
MISCELLANEOUS
DETAILS
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-03
13 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 34
SALVAGE BACKFILL, COMPACTION METHOD 720803 CUYD 37
OBJECT MARKERS, CARSONITE, HIGH INTENSITY REFLECTIVITY 63307 EACH 4
MP 0.1202 SUMMARY OF PROJECT QUANTITIES
RIPRAP, CLASS VI25101 CUYD 22
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 2970
SUBSTRUCTURE STEEL, SALVAGED, MODIFIED, AND ERECTED55501.1 LBS 5160
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 3
SALVAGE BACKFILL, COMPACTION METHOD 720803 CUYD 12
OBJECT MARKERS, CARSONITE, HIGH INTENSITY REFLECTIVITY 63307 EACH 4
MP 0.3312 SUMMARY OF PROJECT QUANTITIES
RIPRAP, CLASS VI25101 CUYD 23
STRUCTURAL STEEL, GALV, FURNISHED, FABRICATED, AND ERECTED55501 LBS 2376
SUBSTRUCTURE STEEL, SALVAGED, MODIFIED, AND ERECTED55501.1 LBS 2496
TREATED STRUCTURAL TIMBER55704 LPSM 1
SIGNS, TYPE III SHEETING 63301 SQFT 14
UNDERDRAIN SYSTEM, 6-INCH60501 LNFT 30
UNDERDRAIN SYSTEM, 6-INCH60501 LNFT 30
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
SIGNS, TYPE III SHEETING63301 SQFT 2
LNFT 20
POST, STEEL, 3 LB63306 LNFT 60
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TRAFFIC CONTROL PLAN - TRAIL CLOSURE
(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
6/3 0/2
5 1 1:
JA
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.D W
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EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
TEMPORARY
TRAIL CLOSURE
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-04
11 4
MOUNTED
ON BARRICADE
W20-3
R11-2
W20-3
TO GORHAM
HUNTINGTON RAVINE TRAIL
BOOTT SPUR TRAIL
NH-16
APPALACHIAN
NATIONAL
SCENIC TRAIL
(2) TYPE III BARRICADES, LIGHTED
AT EACH END OF WORK ZONE
PROJECT
LOCATIONS
TRAFFIC CONTROL PLAN KEY
SIGN
TYPE III BARRICADE
ALL SIGNS, EXCEPT THOSE MOUNTED ON TYPE III BARRICADES SHALL BE
MOUNTED ON DRIVEN POSTS AT A 7 FOOT BOTTOM HEIGHT.
APPALACHIAN
NATIONAL
SCENIC TRAIL
1 *
(1) TYPE III
BARRICADE
TUCKERMAN RAVINE TRAIL
JOHN SHERBURNE SKI TRAIL
RECOMMENDED ACCESS ROUTES
DETOUR NOTES:
TRAIL WILL BE CLOSED AND DETOUR ROUTE IS NOT AVAILABLE FOR THE
PROJECT LOCATION.
* SUMMER USE OF EQUIPMENT ON TUCKERMAN TRAIL IS NOT PERMITTED
WITHOUT DISTRICT APPROVAL.
W21-3
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TRAIL CLOSED
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350 FEET
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TRAIL CLOSED AHEAD
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HUNTINGTON RWAT TRAIL
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HUNTINGTON RWAT TRAIL
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ROAD MACHINERY AHEAD
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SHERBURNE SKI TRAIL
HUNTINGTON RWAT TRAIL
DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
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.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
TYPICAL SECTIONS
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-05
13 5
SCALE: NTS
PROPOSED BRIDGE SECTION
7.0' DECK O-O
6.0' CLEAR ROADWAY
PLAN GRADE
FLATFLAT
W10x33 (TYP.)
2.5'
SCALE: NTS
EXISTING TYPICAL SECTION (STA 9+42 - STA 9+80)
EX BASE - UNKNOWN
(VAR.)
VARIES
(VAR.)
SCALE: NTS
PROPOSED TYPICAL SECTION (STA 9+42 - STA 9+81)
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+20 - STA 10+23.21)
(STA 10+11 - STA 10+23.21)
SCALE: NTS
EXISTING MP 0.1202 BRIDGE SECTION
12.0' DECK O-O
6.0' 6.0'
EXISTING
GRADE
FLATFLAT
3" THICK TRANSVERSE
PLANK DECK
EXISTING W14x43
(TYP.)
3.0' 3.0' 3.0'
2.5'
SCALE: NTS
EXISTING MP 0.1202 APPROACH SECTION
12.0' DECK O-O
6.0' 6.0'
EXISTING
GRADE
FLATFLAT
3" THICK TRANSVERSE
PLANK DECK
EXISTING 8x10"
TIMBERS (TYP.)
3.0' 3.0' 3.0'
SCALE: NTS
EXISTING MP 0.3312 BRIDGE SECTION
12.0' DECK O-O
6.0' 6.0'
EXISTING
GRADE
FLATFLAT
3" THICK TRANSVERSE
PLANK DECK
EXISTING W16x26
(TYP.)2.79' 2.79' 2.79'
(STA 9+65.61- STA 9+89)
(STA 9+65.61 - STA 9+87)
(STA 10+11 - STA 10+31)
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
(STA 10+12 - STA 10+31)
VARIES
3.0'
MIN.
PLAN GRADE
4.0'
MIN.
MATCH
"CHEVRON" YELLOW,
HIGH-INTENSITY
REFLECTIVITY SIGN
W1-8 12"x18"
(TRAIL #5 ONLY)
POST, STEEL, 3 LB
(BREAK AWAY CONNECTION)
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9+00
10+00
11+00
CP1
CP2
BM2
BM1
BP
: 9
+0 0.
PC
: 9
+5 1.
50PT
: 9
+7 7.
PC
: 1
0+
.8
PT
: 1
0+
.7
EP
: 1
1+
.0
N70° 49' 22"W
41.24'
S81° 45' 12"W 57.36'
N68° 28' 55"W
51.50'
DRAWING TITLE
PROJECT NAME
DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
JA
LL
EN
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E #4
.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
HUNTINGTON RWAT
TRAIL @ MP 0.1202
PLAN OF SITE
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-06
13 6
LEGEND
BENCHMARK
TREE LINE
EDGE OF TRAIL
PROPOSED EXISTING
SILT SOCK
RIPRAP
MP 0.1202 GENERAL PLAN OF SITE
PROPOSED
SLOPE STAKE LINE
(TYP)
P.O.B.
REF PT "C"
EXISTING BRIDGE AND
APPROACHES TO BE REMOVED
P.O.E.
REF
PT "D"
REF PT "B"
REF PT "A"
HUNTINGTON
RWAT TRAIL
CONSTRUCTION
BACKFILL BASE
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. 9+96
HUNTINGTON
RWAT TRAIL
6'
CUTLER RIVER
PROPERTY OWNER:
WHITE MOUNTAIN
NATIONAL FOREST
EXISTING EDGE OF WATER
SILT SOCK
(TYP)
DESCRIPTION
HORIZONTAL AND VERTICAL CONTROL
LOCATION
STA / OFFSET NORTHING EASTING ELEVATIONPOINT
BM2
BM1 9+81.43, 10.6' RT 1085498.7559645556.1201 3790.69 BENCHMARK
10+31.48, 13.3' LT
REFERENCE POINTS
LOCATION
STATION NORTHING EASTING ELEVATIONPOINT
C D
B A
9+42.00
9+81.00 10+11.00
10+23.21
3790.50 3790.50
3791.87 3779.26
1085458.9249645539.6282 1085538.5378645539.7369 1085471.0097645541.3794 1085500.6995645545.6840
CP1 9+69.20, 6.1' LT
CP2 10+46.44, 2.3' RT
1085452.6550645525.2710 3794.45 BENCHMARK
1085512.3035645540.5793 MAG NAIL
1085436.0442645539.9181 MAG NAIL
PROPERTY OWNER:
WHITE MOUNTAIN
NATIONAL FOREST
PROPERTY OWNER:
WHITE MOUNTAIN
NATIONAL FOREST
PROPERTY OWNER:
WHITE MOUNTAIN
NATIONAL FOREST
13 13
CUTLER RIVER
EXISTING EDGE OF WATER
Feet 0 8 16
"SNOWMOBILES ONLY"
(SIGN, TYPE III SHEETING
POST, STEEL, 3 LB)
"SNOWMOBILES ONLY"
(SIGN, TYPE III SHEETING
POST, STEEL, 3 LB)
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, STABILIZED AND APPROVED BY THE FOREST SERVICE CONTRACTING
OFFICER REPRESENTATIVE PRIOR TO CONTRACT CLOSEOUT BY THE CONTRACTOR
AT NO EXTRA COST.
5. SURVEY WAS COMPLETED BY OTHERS FOR THIS PROJECT ON 8-1-2012.
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.6
9+00
.5
.3
.3
9+50
.6
.1
.5
.2
10+00
.2
.4
10+50
.8
.2
11+00
PVI STA: 9+45.00
PVI ELEV: 3779.67
G.C.: 19.51% K: 0.21
LVC: 4.07
BVCS: 9+42.92
BVCE: 3779.38
EVCS: 9+46.99
EVCE: 3780.33
LOW PT STA: 9+42.92
LOW PT ELEV: 3779.38
PVI STA: 10+15.95
PVI ELEV: 3790.50
G.C.: 18.92% K: 0.52
LVC: 9.81
BVCS: 10+11.00
BVCE: 3790.50
EVCS: 10+20.81
EVCE: 3791.42
LOW PT STA: 10+11.00
LOW PT ELEV: 3790.50
PVI STA: 9+77.47
PVI ELEV: 3790.50
G.C.: -33.33% K: 0.21
LVC: 6.88
BVCS: 9+74.12
BVCE: 3789.38
EVCS: 9+81.00
EVCE: 3790.50
HIGH PT STA: 9+81.00
HIGH PT ELEV: 3790.50
13.82%
.3
3%
0.00%
18.92%
DRAWING TITLE
PROJECT NAME
DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
JA
LL
EN
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.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
HUNTINGTON RWAT
TRAIL @ MP 0.1202
PROFILE OF SITE
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-07
13 7
MP 0.1202 GENERAL PROFILE
PROP. LOW CHORD = 3789.27'
STREAM BED
EL 3783.22' (+/-)
@ STA. 9+98
OBS WSE =
3784.50'
3787.60
PROPOSED ROAD PROFILE AT CL
EXISTING ROAD PROFILE AT CL
REF PT "C"
P.O.B.
MATCH EXISTING
29.3'
CHANNEL
REF PT "A"
PROPOSED PROFILE @ CL
EXISTING PROFILE @ CL
REF PT "B"
NOTE: RIPRAP NOT SHOWN FOR CLARITY.
PROPOSED BRIDGE, CL STA 9+96:
30 FOOT (OVERALL LENGTH) SINGLE SPAN STEEL STRINGER BRIDGE
WITH A TIMBER PLANK DECK ON STEEL GRADE BEAM FOUNDATIONS.
EXISTING BRIDGE (TO BE REMOVED) CL STA 10+00.00:
MP 0.1202 - 49 FOOT (OVERALL LENGTH) x 12'-0" FOOT WIDE (O-O) STEEL
STRINGER BRIDGE WITH TIMBER APPROACHES ON STACKED TIMBER SILLS.
Q100 WSE = 3790.53'
REF PT "D"
P.O.E.
MATCH EXISTING
Feet (HORIZONTAL) 0 16 32
Feet (VERTICAL) 0 1.6 3.2
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STA. 9+98
CP1
CP4
CP5 BM2
BM1
10+00
PC: 10+49.45
PC
: 1
0+
.0
PC: 9+75.59
PC: 9+56.86
PC: 10+27.14
PT: 10+52.27
PT: 10+23.07
PT
: 9
+8 7.
PT: 9+66.33
PT: 9+48.30
PT: 10+31.00
N32° 25' 17"E 24.00'
N2 5°
5'
"W
9.
DRAWING TITLE
PROJECT NAME
DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
JA
LL
EN
Z:
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A
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R 9 T
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E #5
.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
HUNTINGTON RWAT
TRAIL @ MP 0.3312
PLAN OF SITE
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-08
13 8
GENERAL NOTES:
1. COORDINATE SYSTEM REFERS TO NAD83 NEW HAMPSHIRE STATE PLANES,
US FOOT. DATUM REFERS TO NAVD88.
2. REFERENCE POINTS "A" & "B" 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 REFERENCE POINTS "C" & "D". FADE OR EXTEND PROFILE SLIGHTLY AS
REQUIRED.
4. ANY DAMAGE TO THE EXISTING TRAIL OUTSIDE OF THE CONSTRUCTION
LIMITS WILL BE REPAIRED, STABILIZED AND APPROVED BY THE FOREST
SERVICE CONTRACTING OFFICER REPRESENTATIVE PRIOR TO CONTRACT
CLOSEOUT BY THE CONTRACTOR AT NO EXTRA COST.
5. SURVEY WAS COMPLETED BY HORIZONS ENGINEERING FOR THIS PROJECT
ON 12-28-2024.
LEGEND
BENCHMARK
TREE LINE
EDGE OF TRAIL
PROPOSED EXISTING
SILT SOCK
RIPRAP
MP 0.3312 GENERAL PLAN OF SITE
PROPOSED
SLOPE STAKE LINE
(TYP)
P.O.B.
REF PT "C"
EXISTING BRIDGE
AND APPROACHES
TO BE REMOVED
P.O.E.
REF PT "D"
REF PT "B"
REF
PT "A"
HU
NT
IN
G
TO
N
RW
AT
T
RA
IL
CONSTRUCTION
BACKFILL BASE
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. 9+99
HUNTINGTON
RWAT TRAIL
6'
C U
TL
ER
R
IV
ER
PROPERTY OWNER:
WHITE MOUNTAIN
NATIONAL FOREST
EXISTING EDGE
OF WATER
SILT SOCK
(TYP)
DESCRIPTION
HORIZONTAL AND VERTICAL CONTROL
LOCATION
STA / OFFSET NORTHING EASTING ELEVATIONPOINT
BM2
BM1 10+22.43, 16.0' RT 1085111.1113646098.1249 3930.02 BENCHMARK
9+76.85, 9.0' LT
REFERENCE POINTS
LOCATION
STATION NORTHING EASTING ELEVATIONPOINT
C D
B A
9+65.61
9+87.00 10+11.00
10+31.00
3929.68 3929.68 3923.57 3928.72
1085093.8851646034.9132 1085094.6024646090.5185
1085090.3681646054.8639 108103.2230646075.1309
CP1 10+52.17, 2.8' LT
CP4 9+75.06, 5.3' LT
1085080.7065646042.2423 3927.46 BENCHMARK
1085079.4080646105.7780 MAG NAIL
1085085.0475646041.2137 MAG NAIL
PROPERTY OWNER:
WHITE MOUNTAIN
NATIONAL FOREST
PROPERTY OWNER:
WHITE MOUNTAIN
NATIONAL FOREST
PROPERTY OWNER:
WHITE MOUNTAIN
NATIONAL FOREST
13 13
EXISTING EDGE OF WATER
CP5 10+19.55, 5.9' RT 1085108.3540646086.3172 MAG NAIL
C U
TL
ER
R
IV
ER
Feet 0 4 8
(2) CHEVRON ALIGNMENT
SIGNS PER POST (W1-8)
(2) CHEVRON
ALIGNMENT SIGNS
PER POST (W1-8)
(2) CHEVRON
ALIGNMENT SIGNS
PER POST (W1-8)
(2) CHEVRON
ALIGNMENT SIGNS
PER POST (W1-8)
"SNOWMOBILES ONLY"
(SIGN, TYPE III SHEETING
POST, STEEL, 3 LB)
"SNOWMOBILES ONLY"
(SIGN, TYPE III SHEETING
POST, STEEL, 3 LB)
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.8
9+00
.4
.8
9+50
.6
.1
.6
.7
10+00
.6
.8
.4
10+50
.9
.9
11+00
PVI STA: 10+23.45
PVI ELEV: 3928.53
G.C.: 12.40% K: 1.00
LVC: 12.45
BVCS: 10+17.24
BVCE: 3929.16
EVCS: 10+29.69
EVCE: 3928.68
LOW PT STA: 10+27.27
LOW PT ELEV: 3928.66
PVI STA: 9+84.12
PVI ELEV: 3929.68
G.C.: -33.00% K: 0.17
LVC: 5.61
BVCS: 9+81.39
BVCE: 3928.78
EVCS: 9+86.99
EVCE: 3929.68
HIGH PT STA: 9+86.99
HIGH PT ELEV: 3929.68
PVI STA: 10+12.02
PVI ELEV: 3929.68
G.C.: -10.00% K: 0.20
LVC: 2.04
BVCS: 10+11.00
BVCE: 3929.68
EVCS: 10+13.04
EVCE: 3929.58
HIGH PT STA: 10+11.00
HIGH PT ELEV: 3929.68
.0
0%
0.00%
-10 .00
2.40%
DRAWING TITLE
PROJECT NAME
DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
JA
LL
EN
Z:
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-0
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SD
A
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R 9 T
ST
-U
SF
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ID
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ID
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TO
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RA
VI
NE
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RA
IL
B
RI
DG
E #5
.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
HUNTINGTON RWAT
TRAIL @ MP 0.3312
PLAN OF SITE
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-09
13 9
MP 0.3312 GENERAL PROFILE
PROP. LOW CHORD = 3928.45'
STREAM BED
EL 3924.74' (+/-)
@ STA. 10+00
OBS WSE =
3925.33'
PROPOSED ROAD PROFILE AT CL
EXISTING ROAD PROFILE AT CL
REF PT "C"
P.O.B.
MATCH EXISTING
23.5'
CHANNEL
REF
PT "A"
PROPOSED PROFILE @ CL
EXISTING PROFILE @ CL
REF
PT "B"
NOTE: RIPRAP NOT SHOWN FOR CLARITY.
Q100 WSE = 3927.45'
PROPOSED BRIDGE, CL STA 9+99:
24 FOOT (OVERALL LENGTH) SINGLE
SPAN STEEL STRINGER BRIDGE WITH
A TIMBER PLANK DECK ON STEEL
GRADE BEAM FOUNDATIONS.
EXISTING BRIDGES (TO BE REMOVED)
CL STA 10+00.00:
MP 0.3312 - 24 FOOT (OVERALL
LENGTH) x 12'-0" FOOT WIDE (O-O)
STEEL STRINGER BRIDGE WITH
TIMBER APPROACHES ON STACKED
TIMBER SILLS.
REF PT "D"
P.O.E.
MATCH EXISTING
3926.62
Feet (HORIZONTAL) 0 10 20
Feet (VERTICAL) 0 1 2
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STA. 10+00
10+00
CP1
BM1
PT
: 9
+7 7.
S81° 45' 12"W 57.36'
0.00%
DRAWING TITLE
PROJECT NAME
DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
JA
LL
EN
Z:
\U
-0
U
SD
A
FS
R 9 T
ST
-U
SF
S
BR
ID
GE
ID
IQ
F
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BR
ID
GE
S\
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\T
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3 -
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UN
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TO
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VI
NE
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B
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DG
E
#4 \11
3 - H
UN
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TO
N
RA
VI
NE
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IL
B
RI
DG
E #4
.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
HUNTINGTON RWAT
TRAIL @ MP 0.1202
PLAN OF STRUCTURE
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-10
13 10
PROPOSED
SLOPE STAKE LINE
(TYP)
SILT SOCK (TYP)
EXISTING EDGE OF WATER
HUNTINGTON
RWAT TRAIL
CONSTRUCTION
AND SURVEY
CENTERLINE
EXISTING STRUCTURE
(TO BE REMOVED)
MP 0.1202 BRIDGE PLAN
MP 0.1202 BRIDGE ELEVATION
PROPOSED GRADE
EXISTING
GROUND
AT TOE
PER PLAN
RIPRAP, CLASS VI
RIPRAP DETAIL
SCALE: NTS
REF PT "B"
STA: 10+11
REF PT "A"
STA: 9+81
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 "A"
PROP. LOW CHORD = 3789.27'
SCUPPER: 4 SPA @ 7'-0" = 28'-0"1'
30'-0" BRIDGE CURB
W10x33
6'-0"
CLEAR
7'-0"
DECK
O-O
PROPOSED
STRUCTURE
STA. 9+96
30'-0" (OVERALL BRIDGE LENGTH - REF. PT. A TO REF. PT. B)
HUNTINGTONRWAT 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)
C U
TL
ER
R
IV
ER
3787.60
Q100 WSE = 3790.53'
STREAM BED
EL 3783.22' (+/-)
@ STA. 10+00
OBS WSE =
3784.50'
REF PT "B"
6'-3"
5'-4"
1'-6"
(TYP)
5'-0"
8'-3"
1'-6"
(TYP)
PROPOSED
RIPRAP, CLASS VI
(TYP)
SUBSTRUCTURE STEEL,
SALVAGE, MODIFIED,
AND ERECTED (TYP)
PROPOSED
RIPRAP, CLASS VI
(TYP)
LIMITS OF:
STRUCTURE
EXCAVATION
EXISTING BOULDERS TO
REMAIN IF REQUIRED
C U
TL
ER
R
IV
ER
Feet 0 2 4
LIMITS OF:
STRUCTURE EXCAVATION
STA. 10+17
3787.60
1.5
LIMITS OF:
SALVAGED BACKFILL,
COMPACTION METHOD 7
EXISTING LOW
CHORD = 3786.70'
REMOVAL OF OLD
STRUCTURE, PORTIONS,
DISPOSAL METHOD A
UNDERDRAIN SYSTEM, 6 INCH
INV EL = 3788.50
1'
E E
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CP4
BM2
10+00
PC
: 1
0+
.0
PC: 9+75.59
PT: 10+23.07
PT
: 9
+8 7.
N32° 25' 17"E 24.00'
N2 5°
5'
"W
9.
0.00% -10.00%
DRAWING TITLE
PROJECT NAME
DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
JA
LL
EN
Z:
\U
-0
U
SD
A
FS
R 9 T
ST
-U
SF
S
BR
ID
GE
ID
IQ
F
Y2 4 D
ES
. 1
6-
BR
ID
GE
S\
DW
GS
\T
AS
K
4 -
H
UN
TI
NG
TO
N
RA
VI
NE
T
RA
IL
B
RI
DG
E
#5 \11
4 - H
UN
TI
NG
TO
N
RA
VI
NE
T
RA
IL
B
RI
DG
E #5
.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
HUNTINGTON RWAT
TRAIL @ MP 0.3312
PLAN OF STRUCTURE
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-11
13 11
PROPOSED
SLOPE STAKE LINE
(TYP)
SILT SOCK (TYP)
EXISTING EDGE OF WATER
H U
N
TI
N G
TO
N
R W
A T
TR
A
IL
CONSTRUCTION
AND SURVEY
CENTERLINE
EXISTING STRUCTURE
(TO BE REMOVED)
MP 0.3312 BRIDGE PLAN
MP 0.3312 BRIDGE ELEVATION
PROPOSED GRADE
EXISTING
GROUND
AT TOE
PER PLAN
RIPRAP, CLASS VI
RIPRAP DETAIL
SCALE: NTS
REF PT "B"
STA: 9+87REF PT "B"
STA: 10+11
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 "B"
PROP. LOW CHORD = 3928.45'
3926.62
SCUPPER: 4 SPA @ 5'-3" = 21'-0"1'-6"
24'-0" BRIDGE CURB
W10x33
6'-0"
CLEAR
7'-0"
DECK
O-O
PROPOSED
STRUCTURE
STA. 9+99
24'-0" (OVERALL BRIDGE LENGTH - REF. PT. A TO REF. PT. B)
HU
NT
IN
GTO
N
RW
AT
T
RA
IL
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)
1.5
1'-6"
3926.62
Q100 WSE = 3927.45'
STREAM BED
EL 3924.74' (+/-)
@ STA. 10+00
OBS WSE = 3925.33'
REF PT "A"
6'-9"
1'-6"
(TYP)
PROPOSED
RIPRAP, CLASS VI
(TYP)
SUBSTRUCTURE STEEL,
SALVAGE, MODIFIED,
AND ERECTED (TYP)
PROPOSED
RIPRAP, CLASS VI
(TYP)
LIMITS OF: SALVAGED BACKFILL,
COMPACTION METHOD 7
LIMITS OF:
STRUCTURE EXCAVATION
EXISTING BOULDERS TO
REMAIN IF REQUIRED
6'-9"
C U
TL
ER
R
IV
ER
C U
TL
ER
R
IV
ER
Feet 0 2 4
STA. 10+15 STA. 9+84
EXISTING LOW
CHORD = 3927.42'
UNDERDRAIN SYSTEM, 6 INCH
INV EL = 3927.50
(2) CHEVRON
ALIGNMENT SIGNS
PER POST (W1-8)
(2) CHEVRON
ALIGNMENT SIGNS
PER POST (W1-8)
REMOVAL OF OLD
STRUCTURE, PORTIONS,
DISPOSAL METHOD A
E E
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DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
JA
LL
EN
Z:
\U
-0
U
SD
A
FS
R 9 T
ST
-U
SF
S
BR
ID
GE
ID
IQ
F
Y2 4 D
ES
. 1
6-
BR
ID
GE
S\
DW
GS
\T
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3 -
H
UN
TI
NG
TO
N
RA
VI
NE
T
RA
IL
B
RI
DG
E
#4 \11
3 - H
UN
TI
NG
TO
N
RA
VI
NE
T
RA
IL
B
RI
DG
E #4
.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
ABUTMENT PLAN
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-12
13 12
10'
2'-6" 2'-6" 2'-6" 2'-6"
SCALE: NTS
MP 0.1202 ABUTMENT PLAN
REF PT
PROPOSED W10x33
SALVAGED W14x43
SALVAGED W14x43
A
A
SCALE: NTS
MP 0.1202 ABUTMENT SECTION A-A
SALVAGED W14x43
7'-8"
1'-4" 2'-6" 2'-6" 1'-4"
SCALE: NTS
MP 0.3312 ABUTMENT PLAN
REF PT
PROPOSED W10x33
SALVAGED W16x26
SALVAGED W16x26
B
B
SALVAGED W16x26
SCALE: NTS
MP 0.3312 ABUTMENT SECTION B-B
4"73
4"
2"
4"
2"
PROPOSED 1/2" STEEL
WEB STIFFENER (TYP.)
PROPOSED
W10x33
(4) 3/4"Ø HOLES FOR 5/8"Ø
A325 BOLTS (TYP.)
1" 1"
PROPOSED 1/2" STEEL
WEB STIFFENER (TYP.)
R
EF
. P T.
SALVAGED W16x26
(SUBSTRUCTURE STEEL,
SALVAGED, MODIFIED,
AND ERECTED)
SEE BACKER PLANK
CONNECTION ON
SHEET C-11
4"63
4"
PROPOSED
W10x33
(4) 3/4"Ø HOLES FOR 5/8"Ø
A325 BOLTS (TYP.)
4" 11
4"
R
EF
. P T.
SALVAGED W14x43
(SUBSTRUCTURE STEEL,
SALVAGED, MODIFIED,
AND ERECTED)
SEE BACKER PLANK
CONNECTION ON
SHEET C-11
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.
3. DO NOT BACKFILL THE FOUNDATIONS/STRUCTURE
UNTIL THE SUPERSTRUCTURE HAS BEEN PLACED
AND SECURED.
1/4"
1/4"
1/4"
C L
BE
AR
IN
G
4"
2"
C L
BE
AR
IN
G
4"
4"
1/4" 1/4"
1/4"
PROPOSED 1/2" STEEL WEB STIFFENER
(NON-GALVANIZED)(INCLUDE WITH
SUBSTRUCTURE STEEL, SALVAGED,
MODIFIED, AND ERECTED)
PROPOSED 1/2" STEEL WEB STIFFENER
(NON-GALVANIZED)(INCLUDE WITH
SUBSTRUCTURE STEEL, SALVAGED,
MODIFIED, AND ERECTED)
BEARING EL =
3927.12
BEARING EL =
3788.10
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DRAWN
DESIGNER
CHECKED
ARCHIVE NO.
DATE
PROJECT NO.
DWG SHEET NO.
OFSHEET
United States Department of Agriculture Forest Service
6/3 0/2
5 1 1:
JA
LL
EN
Z:
\U
-0
U
SD
A
FS
R 9 T
ST
-U
SF
S
BR
ID
GE
ID
IQ
F
Y2 4 D
ES
. 1
6-
BR
ID
GE
S\
DW
GS
\T
AS
K
3 -
H
UN
TI
NG
TO
N
RA
VI
NE
T
RA
IL
B
RI
DG
E
#4 \11
3 - H
UN
TI
NG
TO
N
RA
VI
NE
T
RA
IL
B
RI
DG
E #4
.D W
G
EASTERN REGION
HUNTINGTON RWAT TRAIL
BRIDGES #4 & #5
REPLACEMENT
@ MP 0.1202 & MP 0.3312
WHITE MOUNTAIN
NATIONAL FOREST
ANDROSCOGGIN
RANGER DISTRICT
STRUCTURE DETAILS
7/1/2025
C.SMITH
J.ALLEN
G.JUNTTILA
U28-04493
C-13
13 13
SECTION AT SCUPPER
SCALE: NTS
SECTION A-A
SCALE: NTS
DIAPHRAGM CONNECTION
SECTION B-B
SCALE: NTS
3" DECK (NOM.)
C8x11.5 DIAPHRAGM
1/2"
3" M
IN
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
MP 0.1202: 30'
MP 0.3312: 24'
MP 0.1202: 15'
MP 0.3312: 12'
STRUCTURAL STEEL, GALV,
FURNISHED, FABRICATED, AND
ERECTED (W10x33)
BOLTED CONNECTIONS
PER DIAPHRAGM
CONNECTION DETAIL (TYP.)
MP 0.1202: 15'
MP 0.3312: 12'
(3) STAGGERED 5/8"x15" BOLT (A449)
WITH (2) MALLEABLE IRON WASHERS
(UNDER HEAD AND NUT).
FIELD DRILL CURB AND DECK
6"x6" CURB, S1S1E
2"
CL
NOTE:
CONTRACTOR IS TO ASSEMBLE CURB & SCUPPER IN PLACE,
MARK & DRILL THRU DECK, DISASSEMBLE, REASSEMBLE &
BOLT DOWN.
9" 3" x6"
SCUPPER,
S2S1E, SHOP DRILL
6" x 6" CURB, S1S1E, SHOP DRILL
A
A
2" 3" 11
2"
WEB STIFFENER DETAILS
SCALE: NTS
2"
1'-3"
4"
1'-05 8"
PROPOSED 1/2"
STEEL WEB
STIFFENER
PROPOSED 1/2" STEEL
WEB STIFFENER
3/4" CHAMFER
(TYP.)
3/4" CHAMFER
(TYP.)
MP 0.3312MP 0.1202
3 x 6" TIMBER NAILER, (TYP.)
(S2S1E) (2 1/2")
3" x 12" DECK
PLANKS, S2S1E
(2 1/2")
2" x 6" CONT.
PLATE (S2S1E)
(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
W10x33 STEEL STRINGER
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"
SCALE: NTS
STRUCTURAL STEEL, GALV,
FURNISHED, FABRICATED,
AND ERECTED
(L4" x 4" x 1/2" x 6")
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".
2"
3" x 6" x 2'-0" SCUPPER, S2S1E (TYP.)
PLAN-SCUPPER BLOCK AT SPLICE
SCALE: NTS
2" x 6" CONT. PLATE
PLAN-SCUPPER BLOCK
SCALE: NTS
2" 101
2" 101 2" 11
2"
2'
2"
6"11 2"
11/16"Ø (TYP.)
2" 101
2" 101 2" 11
2"
2'
2"
6"11 2"
11/16"Ø (TYP.)
CONNECTION AT
SPLICE (TYP.)
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AutoCAD SHX Text
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File details come from the government source that posted it. Updated .