A04_SOW_NATT_Bridge_Replacement_Yockanookany_Section_near_Milepost_109_6_.pdf

Statement of Work

Install Steel I-Beams and Abutments along the Natchez Trace National Scenic Trail

Yockanookany Section, Madison, Mississippi

Natchez Trace Parkway

National Park Service

Project Description

I. Project Statement, Background, and Location

The National Park Service is seeking a contractor to install steel I-beams and concrete abutments for a 40’ trail bridge. The remainder of the trail bridge will be completed by the NATT Program Coordinator and Public Land Corps youth crews.

The project location is the Yockanookany section of the Natchez Trace National Scenic Trail (NATT) in Madison, MS within the boundaries of the Natchez Trace Parkway (Parkway).

The nearest Parkway milepost marker to the job site is 109.6. Each bidder is urged to visit the site prior to bidding. Site visits may be arranged by contacting the Contracting Officer.

• Task 1—Coordinate with NATT Program Coordinator and COR to access work site and mobile to complete work.

• Task 2—Supply all components and supplies necessary to install steel I-beams and concrete abutments using the attached construction drawings. All work shall conform to the supplied specifications.

II. Project Objective

The objective is to install steel I-beams and concrete abutments for a trail bridge. The contractor shall furnish all transportation, materials, labor, equipment, and all other services necessary to accomplish the project objective.

III. Contents of Proposal

• Project approach: briefly (1-page) summarize key aspects of approach.

• Project team: identify the proposed project manager who will serve as the ongoing point-of-contact to the Contracting Officers Representative (COR).

• Cost Proposal: Project fees must include all direct and indirect fees needed to complete the entire scope of work and final deliverables.

IV. Invoicing

• All submittals under this contract must be approved by the COR prior to any interim or final payment. Invoices will be submitted first to the COR and may be submitted monthly.

• Invoices shall include an itemized cost summary of staff work and direct expenses in a level of detail that matches the task agreement proposal, with invoicing based on percent complete for each task and subtask line.

• Following COR acceptance of the invoice, submittal to the Invoice Processing Platform (www.IPP.gov) is required.

• When an invoice is not associated with a required submittal, the invoice shall be accompanied by a brief narrative of the work represented by the invoice.

V. Period of Performance and Prework Conference

• The Period of Performance has been set at 6 months from date of notice to proceed.

• Before the start of the work, the Contracting Officer will arrange for a pre-work conference with the Contractor to determine any requirements that must be resolved to accommodate the work. Upon completion of the meeting and/or resolution of any items required, the Contracting Officer will issue a Notice to Proceed with the work.

VI. Project Restrictions: the following restrictions apply to this contract:

• No contractor shall be considered for this project unless they have prior experience comparable in scope and scale to the proposed work detailed in this scope of work and attached construction drawings.

• No work shall occur unless a contracting officer is on site or permission has been granted in advance.

• Access routes shall be the closest Parkway access to the area where the contractor is working.

• Parking is only allowed along the Parkway if vehicles and equipment are a minimum of four feet off the paved edge and contractor ensures no rutting of the shoulder.

• Hauling restrictions: Two axle vehicles hauling material over park roads shall have pneumatic tires, dual rear wheels and a gross weight not exceeding 25 tons each.

Three-axle units may be used for transporting materials provided: (1) that_ the two rear wheels axles of such units are equipped with dual wheel pneumatic tires; (2) that the maximum gross weight on any one axle shall not exceed 16,000 pounds; (3) that the maximum gross weight on any such unit shall not exceed 35,000 pounds; and (4) that no two axles shall be spaced less than 40 inches center to center. Vehicles shall not be counted for the purpose of load determination unless they are equipped with brakes. Units shall not be operated at speeds exceeding 30 miles per hour and shall maintain a spacing of not less than 500 feet. Trucks and other heavy equipment shall be confined to the limits of the project on the park road. Hauling of materials, supplies, and equipment over the park road, other than within the limits of the project, shall not be permitted except as is necessary to perform the required work and the contractor shall be required to haul on non-Parkway roads to the maximum extent possible.

• No unauthorized dumping of the material is acceptable. The contractor is strictly responsible for properly disposing of removed material and shall be liable for any fees or fines associated with improper hauling or disposal.

VII. Traffic Control

The contractor will provide two flagmen whenever work operations may interfere with the flow of traffic. The flagman will be located at least 150 feet in advance of the work site. "FLAGMAN AHEAD, 500 FT." signs will be always used the flagmen are working, and flagmen and workers are required to wear orange safety vests while working on and along the roadway. The contractor is responsible for providing all signs and other equipment to perform this task.

VIII. Inspection and Times of Work

Work will be monitored by a representative of the Contracting Officer and regular meetings with the contractor will be held to assure safety requirements are being met, to resolve problems that arise, and to monitor the general status of the removal process. Any contractor representative will be thoroughly familiar with the project and have authority to act in the absence of the contractor. Normal working hours are Monday through Friday, 7:30 AM to 5:00 PM, excluding Federal Holidays. No work will be permitted on weekends or Federal Holidays unless approved by the Contracting Officer in advance.

IX. Protection of Vegetation, Structures, and Utilities

The Contractor shall preserve and protect all structures, equipment, and vegetation (such as trees, shrubs, and grass) on or adjacent to the work site, which are not to be removed, and which do not unreasonably interfere with the work required under this contract.

The Contractor shall only remove trees when specifically authorized to do so and shall avoid damaging vegetation that will remain in place. If any limbs or branches of trees are broken during contract performance, or by the careless operation of equipment, or by workmen, the Contractor shall trim those limbs or branches with a clean cut and paint the cut with a tree- pruning compound as directed by the Contracting Officer. The Contractor shall protect from damage all existing improvements and utilities at or near the work site, the locations of which are made known to or should be known by the Contractor. The Contractor shall repair any damage to those facilities, including those that are the property of a third party, resulting from failure to comply with the requirements of this contract or failure to exercise reasonable care in performing the work. If the Contractor fails or refuses to repair the damage promptly, the Contracting Officer may have the necessary work performed and charge the cost to the Contractor.

X. Contractor Responsibility

The contractor shall remove all material from the site in accordance with all local, state, and federal laws and regulations, and all the terms and conditions listed in the contract. The Contractor agrees that personnel and equipment are subject to safety inspections by the Government while on federal property. The Contractor must comply with all Federal and State OSHA requirements. The contractor shall be responsible for the safety of his employees and equipment, and for any injury or damage done to or by them from any source or cause. He shall save and hold the United States free from all claims for damages to all persons and (or) property arising from the execution of the work covered by these specifications.

XI. NPS Responsibilities

• Parkway staff shall provide Contractor access to the site and supply construction drawings for the bridge replacement.

• Responsible for reviewing and approving project products in a timely manner.

XII. Points of Contact

Contractual: To Be Determined

Christopher Ellington, COR Trail Coordinator Natchez Trace Parkway, National Park Service 601-416-0532 Christopher_Ellington@nps.gov mailto:Christopher_Ellington@nps.gov

ALA.

ET LA.

GULF

Install Steel I-Beams and Abutments for Trail Bridge along the Natchez Trace National Scenic Trail on the Yockanookany Section, Madison County.

tfaxar, National Park Service, @ Mapbox, and @ OpenStreemfap

Center: 90°2'3"W 32°28'30"N

Coordinate System: WGS 1984 Web Mercator Auxiliary Sphere

0 0.05 0.1 --===--==:itli

--c=:::::i--c=::::JKm 0 0.13 0.25

SCALE:

TITLE OF SHEETSUB SHEET NO.DESIGNED:

DATE:

TECH. REVIEW:

PMIS/PKG NO.

DRAWING NO.

SHEET

OF

CADD: C72 MP111.1 BRIDGE PLAN &

PROFILECWM

CWM

CWM

30 126

SCALE - 1"=30'

MP111.1 - 40' TIMBER AND STEEL BRIDGE PLAN

SCALE - 1"=6'

MP111.1 - 40' TIMBER AND STEEL BRIDGE PROFILE

304820

NATT 604

177625

3/25/2025

NATIONAL SCENIC TRAIL AT NATCHEZ TRACE

INDICATED MILEPOSTS FROM TUPELO & JACKSON, MISSISSIPPI

DESIGN BRIDGES AND BOARDWALKS ALONG THE NATIONAL SCENIC

TRAIL THAT ARE IN NEED OF REPAIR OR REPLACEMENT

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10"HICKORY

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10"CEDAR

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PCS

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GRID

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LIMITS OF DISTURBANCE

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EXISTING GROUND PROFILE

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NOTE: ALL EXISTING TRAIL MODIFICATIONS OR RE-LOCATIONS BY OTHERS

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FLOOD ZONE: X 100-YEAR BASE FLOOD ELEVATION: N/A

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BRIDGE ABUTMENT RAMP SEE DETAIL 2/S7

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BRIDGE ABUTMENT RAMP SEE DETAIL 2/S7

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CONCRETE BRIDGE FOOTING & ABUTMENT SEE DETAIL 1/S13

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CONCRETE BRIDGE FOOTING & ABUTMENT SEE DETAIL 1/S13

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CONCRETE BRIDGE FOOTING & ABUTMENT SEE DETAIL 1/S13

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CONCRETE BRIDGE FOOTING & ABUTMENT SEE DETAIL 1/S13

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BRIDGE ABUTMENT RAMP SEE DETAIL 2/S7

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BRIDGE ABUTMENT RAMP SEE DETAIL 2/S7

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LIMITS OF DISTURBANCE

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LIMITS OF DISTURBANCE

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LIMITS OF DISTURBANCE

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AutoCAD SHX Text PEDESTRIAN/EQUESTRIAN PRE-FABRICATED BRIDGES, TIMBER AND STEEL BRIDGES, ELEVATED TIMBER BOARDWALK AND LOW TIMBER BOARDWALK MINIMUM DESIGN CRITERIA: MINIMUM DESIGN LIVE LOAD: 90 PSF (AASHTO LRFD SPEC. FOR DESIGN OF PEDESTRIAN BRIDGES) 90 PSF (AASHTO LRFD SPEC. FOR DESIGN OF PEDESTRIAN BRIDGES) H5 VEHICULAR LOADING 1.0 KIP OVER 16IN^2 AREA (PATCH LOAD-DECKING ONLY) DEAD LOAD: ACTUAL WEIGHT ACTUAL WEIGHT MINIMUM GUARDRAIL LOAD: CONCENTRATED LOAD OF 200 LBS AND/OR 50LBS/LF LINEAR LOAD IN EITHER DIRECTION (IBC CONCENTRATED LOAD OF 200 LBS AND/OR 50LBS/LF LINEAR LOAD IN EITHER DIRECTION (IBC SECTION 1607.8) MAXIMUM DEFLECTION LIMITS: L/360 LIVE LOAD (AASHTO LRFD SPEC. FOR DESIGN OF PEDESTRIAN BRIDGES) L/360 LIVE LOAD (AASHTO LRFD SPEC. FOR DESIGN OF PEDESTRIAN BRIDGES) DESIGN BUILDING CODES, SPECIFICATIONS AND GUIDLINES: AASHTO LRFD GUIDE SPECIFICATIONS FOR DESIGN OF PEDESTRIAN BRIDGES (LATEST EDITION) LOADS: SECTION 3 DEFLECTION: SECTION 5 EQUESTRIAN LOADING: SECTION 3.3 VEHICULAR LOADING: SECTION 3.2 AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS (5TH OR LATEST EDITION) WATER/STREAM LOADS: SECTION 3.7 ASCE 7-16 SEISMIC LOADS: AS REQUIRED FOR LOCATION WIND LOADS: AS REQUIRED FOR LOCATION cellington Text Box This bridge is for MP109.6 but we are using the design for MP111.1.

DATE:

TECH. REVIEW:

PMIS/PKG NO.

DRAWING NO.

SHEET

OF

CADD: S13

TIMBER AND STEEL BRIDGE

FOUNDATION DETAILSCWM

CWM

CWM

VARIES

NATT 604

177625

3/25/2025

NATIONAL SCENIC TRAIL AT NATCHEZ TRACE

INDICATED MILEPOSTS FROM TUPELO & JACKSON, MISSISSIPPI

DESIGN BRIDGES AND BOARDWALKS ALONG THE NATIONAL SCENIC

TRAIL THAT ARE IN NEED OF REPAIR OR REPLACEMENT

TIMBER AND STEEL BRIDGE FOUNDATION DETAILS

(20', 30', 40' & 50' BRIDGES) SCALE - NTS

20' TIMBER AND STEEL BRIDGE

FOUNDATION SECTION DETAIL SCALE - NTS

30' TIMBER AND STEEL BRIDGE

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40' TIMBER AND STEEL BRIDGE

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50' TIMBER AND STEEL BRIDGE

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PLAN VIEW

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AutoCAD SHX Text 34" DIA. ANCHOR BOLT I-BEAM GIRDER BEARING PLATE MOUNTING BOLTS SHALL BE ADJUSTED TO FIT THE SPACING AND LOCATION OF EACH BRIDGE LENGTH BASED ON I-BEAM GIRDER SIZE

AutoCAD SHX Text 34" DIA. ANCHOR BOLT I-BEAM GIRDER BEARING PLATE MOUNTING BOLTS SHALL BE ADJUSTED TO FIT THE SPACING AND LOCATION OF EACH BRIDGE LENGTH BASED ON I-BEAM GIRDER SIZE

AutoCAD SHX Text 34" DIA. ANCHOR BOLT I-BEAM GIRDER BEARING PLATE MOUNTING BOLTS SHALL BE ADJUSTED TO FIT THE SPACING AND LOCATION OF EACH BRIDGE LENGTH BASED ON I-BEAM GIRDER SIZE

AutoCAD SHX Text 34" DIA. ANCHOR BOLT I-BEAM GIRDER BEARING PLATE MOUNTING BOLTS SHALL BE ADJUSTED TO FIT THE SPACING AND LOCATION OF EACH BRIDGE LENGTH BASED ON I-BEAM GIRDER SIZE

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#5 REBAR @ 12" OC

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#5 REBAR @ 9" OC

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#5 REBAR @ 12" OC

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#5 REBAR @ 9" OC

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ALL REBAR SHALL HAVE A MINIMUM OF 3" OF EDGE COVER

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ALL REBAR SHALL HAVE A MINIMUM OF 3" OF EDGE COVER

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ALL REBAR SHALL HAVE A MINIMUM OF 3" OF EDGE COVER

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ALL REBAR SHALL HAVE A MINIMUM OF 3" OF EDGE COVER

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ALL REBAR SHALL HAVE A MINIMUM OF 3" OF EDGE COVER

AutoCAD SHX Text PRE-CAST OR CAST -IN-PLACE CONCRETE FOUNDATION SIZE VARIES DEPENDING ON BRIDGE LENGTH. CONTRACTOR MAY USED ROUND TIMBER PILES OR HELICAL PILES FOR ADDITIONAL SUPPORT IN POOR SOILS.

AutoCAD SHX Text ADDITIONAL SUPPORT PILES ARE NOT REQUIRED FOR BRIDGES 60 FT LONG AND LESS UNLESS OTHERWISE DETERMINED BY THE BRIDGE MANUFACTURER.

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2"X4" BACKWALL KEY

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#5 REBAR @ 12" OC

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2"X4" BACKWALL KEY

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PRE-CAST OR CAST-IN-PLACE BRIDGE BACKWALL (HEIGHT VARIES) MIN. 4000PSI CONCRETE

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#5 REBAR @ 12" OC

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#5 REBAR @ 12" OC

AutoCAD SHX Text 34" DIA ANCHOR BOLT BOLTED BEARING CONNECTION TO CONCRETE FOUNDATION (VARIES ON LENGTH OF BRIDGE)

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PRE-CAST OR CAST-IN-PLACE BRIDGE FOUNDATION MIN. 4000PSI CONCRETE

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ALL REBAR SHALL HAVE A MINIMUM OF 3" OF EDGE COVER

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#5 REBAR @ 12" OC

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#5 REBAR @ 9" OC

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TWO (2) #5 REBAR

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TWO (2) #5 REBAR

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#5 REBAR @ 12" OC

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THREE (3) #5 REBAR EVENLY SPACED

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#5 REBAR @ 12" OC

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THREE (3) #5 REBAR EVENLY SPACED

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#5 REBAR @ 12" OC

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#5 REBAR (SEE SECTION DETAILS FOR NUMBER AND SPACING BASED ON BACKWALL HEIGHT

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#5 REBAR @ 12" OC

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2"X4" BACKWALL KEY

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2"X4" BACKWALL KEY

AutoCAD SHX Text 34" DIA. ANCHOR BOLT BOLTED BEARING CONNECTION TO CONCRETE FOUNDATION (VARIES ON LENGTH OF BRIDGE)

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PRE-CAST OR CAST-IN-PLACE BRIDGE BACKWALL (HEIGHT VARIES) MIN. 4000PSI CONCRETE

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PRE-CAST OR CAST-IN-PLACE BRIDGE FOUNDATION MIN. 4000 PSI CONCRETE

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PRE-CAST OR CAST-IN-PLACE BRIDGE FOUNDATION AND BACKWALL MIN. 4000 PSI CONCRETE

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PRE-CAST OR CAST-IN-PLACE BRIDGE FOUNDATION AND BACKWALL MIN. 4000 PSI CONCRETE

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PRE-CAST OR CAST-IN-PLACE BRIDGE FOUNDATION & BACKWALL MIN. 4000 PSI CONCRETE

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PRE-CAST OR CAST-IN-PLACE BRIDGE FOUNDATION & BACKWALL MIN. 4000 PSI CONCRETE

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GIRDER SIZES BASED ON BRIDGE LENGTH

AutoCAD SHX Text 34" DIA. ANCHOR BOLT CASE INTO CONCRETE FOUNDATION (MIN. 10") WITH 3"X3"X0.375" PLATE WASHER

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GIRDER SIZES BASED ON BRIDGE LENGTH

TIMBER AND STEEL BRIDGE SECTIONS AND ELEVATIONS FOR DECKING AND GUARDRAILS

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TITLE OF SHEETSUB SHEET NO.DESIGNED:

DATE:

TECH. REVIEW:

PMIS/PKG NO.

DRAWING NO.

SHEET

OF

CADD: S12

TIMBER AND STEEL BRIDGE

DETAILSCWM

CWM

CWM

VARIES

NATT 604

177625

3/25/2025

NATIONAL SCENIC TRAIL AT NATCHEZ TRACE

INDICATED MILEPOSTS FROM TUPELO & JACKSON, MISSISSIPPI

DESIGN BRIDGES AND BOARDWALKS ALONG THE NATIONAL SCENIC

TRAIL THAT ARE IN NEED OF REPAIR OR REPLACEMENT

GUARDRAILS SPLICE DETAIL

SCALE - NTS GUARDRAIL SECTION DETAIL

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I-BEAN /TIMBER DECK NAILER DETAIL

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TIMBER DECK NAILER SPLICE DETAIL

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SECTION DETAILELEVATION DETAIL

PLAN DETAIL

TIMBER DECK NAILER BRACKET DETAIL

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4"X12" DECKING

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4"X6" TIMBER NAILER

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58" DIA HDG THROUGH BOLT/SPACERS

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STEEL SPACERS BETWEEN NAILER AND STEEL ANGLE

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I-BEAM GIRDER BASED ON BRIDGE LENGTH

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DIAPHRAGM BEAM BASED ON BRIDGE LENGTH

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34" THICK BEARING PLATE WELDED TO I-BEAM GIRDER

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CONCRETE BRIDGE FOUNDATION

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34" DIA ANCHOR BOLTS SPACING VARIES BASED ON BRIDGE LENGTH AND BEARING PLATE

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STEEL I-BEAM GIRDER

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4"X6" TIMBER NAILER

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4"X6" TIMBER NAILER

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4"X12" DECKING

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4"X6" TIMBER NAILER SPLICE LOCATION

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58" DIA HDG THRU-BOLT

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58" DIA HDG THRU-BOLT

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4"X4" MID-RAIL

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4"X6" RAIL POSTS (MAX 5.0' OC)

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4"X6" BRACE (AT EVERY POST)

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4"X4" BOTTOM RAIL

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4"X4"X2' SPACER

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4"X12" DECKING

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4"X4" TOP RAIL

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4"X6" BRACE (AT EVERY POST)

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EXTENDED 4"X12" TIMBER DECKING (AT EVERY POST)

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4"X12" TIMBER DECKING

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8" MIN TOP RAIL NOTCH SPLICE (HORIZONTAL)

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8" MIN. MID-RAIL NOTCH SPLICE (VERTICAL)

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MIN 8" BOTTOM RAIL NOTCH SPLICE (HORIZONTAL)

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I-BEAM GIRDER SIZE BASED ON BRIDGE LENGTH

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DIAPHRAGM BEAM SIZE BASED ON BRIDGE LENGTH

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4"X6" GUARDRAIL POST

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4"X6" GUARDRAIL POST

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4"X6" BRACE (AT EVERY POST)

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4"X4" TOP RAIL

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4"X4" MID-RAIL

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4"X4" BOTTOM RAIL

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4"X6" TIMBER NAILER

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4"X12" TIMBER DECKING

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STEEL ANGLE NAILER BRACKET

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4"X6" GUARDRAIL POST

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4"X4" TIMBER TOP RAIL

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4"X4" TIMBER MID-RAIL

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4"X4" TIMBER BOTTOM RAIL

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STEEL I-BEAM GIRDER

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4"X6" TIMBER NAILER

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4"X6" TIMBER NAILER

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4"X12" DECKING

AutoCAD SHX Text STEEL ANGLE BASED ON BRIDGE LENGTH L4X3X0.375 OR L5X3X0.375 WELDED TO GIRDER ALL SIDES

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58" DIA HDG THRU-BOLT

AutoCAD SHX Text RAIL SPLICE NOTE: TOP RAIL AND BOTTOM RAIL SHALL ALTERNATE SPLICE LOCATIONS WITH MID-RAIL

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I-BEAM GIRDER SIZE BASED ON BRIDGE LENGTH

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STEEL ANGLE NAILER BRACKET

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STEEL ANGLE NAILER BRACKET

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58" DIA THRU-BOLT WITH ANGLE WASHER

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58" DIA THRU-BOLT WITH OGEE WASHER AND NUT

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58" DIA THRU-BOLT WITH OGEE WASHER AND NUT

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58" DIA CARRIAGE BOLT ANGLE WASHER AND NUT (MID RAIL ONLY)

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58" DIA THRU-BOLT WITH OGEE WASHER AND NUT

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58" DIA THRU-BOLT WITH OGEE WASHER AND NUT

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58" DIA CARRIAGE BOLT, ANGLE WASHER AND NUT (MID RAIL ONLY)

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58" DIA THRU-BOLT WITH ANGLE WASHER

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4"X4" MID AND BOTTOM RAIL

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4"X4" TOP RAIL

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4"X6" TIMBER NAILER

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58" DIA HDG THROUGH BOLT/SPACERS

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STEEL SPACERS BETWEEN NAILER AND STEEL ANGLE

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I-BEAM GIRDER BASED ON BRIDGE LENGTH

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34" THICK BEARING PLATE WELDED TO I-BEAM GIRDER

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CONCRETE FOUNDATION

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CONCRETE FOUNDATION " DIA 34" DIA ANCHOR BOLTS

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4"X6" BRACE (AT EVERY POST)

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4"X6" RAIL POSTS (MAX 5.0' OC)

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4"X4"X2' BOTTOM RAIL SPACER

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58" DIA CARRIAGE BOLT AND NUT (MID RAIL ONLY)

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58" DIA THRU-BOLT

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58" DIA THRU-BOLT WITH OGEE WASHER AND NUT

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58" DIA THRU-BOLT WITH OGEE WASHER AND NUT

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58" DIA CARRIAGE BOLT AND NUT (MID RAIL ONLY)

AutoCAD SHX Text STEEL ANGLE BASED ON BRIDGE LENGTH L4X3X0.375 OR L5X3X0.375 WELDED TO GIRDER ALL SIDES

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6" TIMBER SCREW TWO (2) PER DECKBOARD

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2"X6" LOWER MID RAIL

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2"X6" UPPER MID RAIL

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2"X8" TOP RAIL

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6" TIMBER SCREW TWO (2) PER DECKBOARD

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2"X8" TOP RAIL

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2"X6" UPPER- MID RAIL

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2"X6" LOWER-MID RAIL

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8" TIMBER SCREW

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3" TIMBER SCREW

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3" TIMBER SCREW

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3" TIMBER SCREW

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3" TIMBER SCREW

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2"X8" TOP RAIL

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2"X6" UPPER- MID RAIL

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2"X6" LOWER- MID RAIL

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8" TIMBER SCREW

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8" TIMBER SCREW

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3" TIMBER SCREW

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3" TIMBER SCREW

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6" TIMBER SCREW TWO (2) PER DECKBOARD

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6" TIMBER SCREW TWO (2) PER DECKBOARD

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2"X6" UPPER-MID RAIL

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2"X6" LOWER-MID RAIL

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2"X8" TOP RAIL

6" TIMBER SCREW TWO (2) PER DECKBOARD

DATE:

TECH. REVIEW:

PMIS/PKG NO.

DRAWING NO.

SHEET

OF

CADD: S10

TIMBER AND STEEL BRIDGE

DETAILSCWM

CWM

CWM

VARIES

NATT 604

177625

3/25/2025

NATIONAL SCENIC TRAIL AT NATCHEZ TRACE

INDICATED MILEPOSTS FROM TUPELO & JACKSON, MISSISSIPPI

DESIGN BRIDGES AND BOARDWALKS ALONG THE NATIONAL SCENIC

TRAIL THAT ARE IN NEED OF REPAIR OR REPLACEMENT

40' TIMBER AND STEEL BRIDGE DETAILS

SCALE - NTS

SECTION VIEWELEVATION VIEW

PLAN VIEW

W16X67 GIRDER

BEAM SCALE - NTS

W10X15 DIAPHRAGM

BEAM SCALE - NTS

L4X3X0.375

NAILER ANGLE &

DIAPHRAGM ANGLE

SCALE - NTS

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AutoCAD SHX Text PEDESTRIAN/EQUESTRIAN PRE-FABRICATED BRIDGES, TIMBER AND STEEL BRIDGES, ELEVATED TIMBER BOARDWALK AND LOW TIMBER BOARDWALK MINIMUM DESIGN CRITERIA: MINIMUM DESIGN LIVE LOAD: 90 PSF (AASHTO LRFD SPEC. FOR DESIGN OF PEDESTRIAN BRIDGES) 90 PSF (AASHTO LRFD SPEC. FOR DESIGN OF PEDESTRIAN BRIDGES) H5 VEHICULAR LOADING 1.0 KIP OVER 16IN^2 AREA (PATCH LOAD-DECKING ONLY) DEAD LOAD: ACTUAL WEIGHT ACTUAL WEIGHT MINIMUM GUARDRAIL LOAD: CONCENTRATED LOAD OF 200 LBS AND/OR 50LBS/LF LINEAR LOAD IN EITHER DIRECTION (IBC CONCENTRATED LOAD OF 200 LBS AND/OR 50LBS/LF LINEAR LOAD IN EITHER DIRECTION (IBC SECTION 1607.8) MAXIMUM DEFLECTION LIMITS: L/360 LIVE LOAD (AASHTO LRFD SPEC. FOR DESIGN OF PEDESTRIAN BRIDGES) L/360 LIVE LOAD (AASHTO LRFD SPEC. FOR DESIGN OF PEDESTRIAN BRIDGES) DESIGN BUILDING CODES, SPECIFICATIONS AND GUIDLINES: AASHTO LRFD GUIDE SPECIFICATIONS FOR DESIGN OF PEDESTRIAN BRIDGES (LATEST EDITION) LOADS: SECTION 3 DEFLECTION: SECTION 5 EQUESTRIAN LOADING: SECTION 3.3 VEHICULAR LOADING: SECTION 3.2 AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS (5TH OR LATEST EDITION) WATER/STREAM LOADS: SECTION 3.7 ASCE 7-16 SEISMIC LOADS: AS REQUIRED FOR LOCATION WIND LOADS: AS REQUIRED FOR LOCATION

AutoCAD SHX Text 1 S10

AutoCAD SHX Text 2 S10

AutoCAD SHX Text 3 S10

AutoCAD SHX Text A S10

AutoCAD SHX Text A S10

AutoCAD SHX Text A S10

AutoCAD SHX Text A S10

AutoCAD SHX Text A S10

AutoCAD SHX Text 5 S9

AutoCAD SHX Text W16X67 PROPERTIES ASTM A36 - 36KSI YIELD STRENGTH AREA: 19.7 IN^2 19.7 IN^2 WEIGHT: 67 LBS/FT 67 LBS/FT I: 954 IN^4 954 IN^4 S: 117 IN^3 117 IN^3 r: 6.96 IN 6.96 IN Zx: 130 IN^3130 IN^3

AutoCAD SHX Text W10X15 PROPERTIES ASTM A36 - 36KSI YIELD STRENGTH AREA: 4.41 IN^2 4.41 IN^2 WEIGHT: 15 LBS/FT 15 LBS/FT I: 68.9 IN^4 68.9 IN^4 S: 13.8 IN^3 13.8 IN^3 r: 3.95 IN 3.95 IN Zx: 16 IN^316 IN^3

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W16X67 GIRDER

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W10X15 DIAPHRAGM

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L4X3X0.375 NAILER BOARD BRACKET W/ 58" DIA THRU-BOLT

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W16X67 GIRDER

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W10X15 DIAPHRAGM

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L4X3X0.375 NAILER BOARD BRACKET W/ 58" DIA THRU-BOLT

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W16X67 GIRDER

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W10X15 DIAPHRAGM

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L4X3X0.375 NAILER BOARD BRACKET W/ 58" DIA THRU-BOLT

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4"X6" NAILER BOARD

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L4X3X0.375 GIRDER/DIAPHRAGM CONNECTION BRACKET (WELDED ALL SIDES)

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L4X3X0.375 GIRDER/DIAPHRAGM CONNECTION BRACKET (WELDED ALL SIDES)

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34" BEARING PLATE

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EDGE OF DECKING

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EDGE OF DECKING

AutoCAD SHX Text GAP BETWEEN THE CONCRETE BACKWALL AND THE BRIDGE DECKING SHALL BE NO GREATER THAN " (0.5"). IF THE GAP IS GREATER THAN ", 12" (0.5"). IF THE GAP IS GREATER THAN ", 12", A TRANSITION PLATE SHALL BE INSTALLED ACROSS THE GAP OR AN EXPANSION MATERIAL SHALL BE INSTALLED. (TYPICAL ALL BRIDGE LENGTHS)

AutoCAD SHX Text GAP BETWEEN THE CONCRETE BACKWALL AND THE BRIDGE DECKING SHALL BE NO GREATER THAN " (0.5"). IF THE GAP IS GREATER THAN ", 12" (0.5"). IF THE GAP IS GREATER THAN ", 12", A TRANSITION PLATE SHALL BE INSTALLED ACROSS THE GAP OR AN EXPANSION MATERIAL SHALL BE INSTALLED. (TYPICAL ALL BRIDGE LENGTHS)

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GUARDRAIL SYSTEM

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GUARDRAIL SYSTEM

1 S12