00011907_Att B_Special Provisions.docx

Attachment B – Special Provisions

Skipanon River Bridge (BR1400) Span 2 Replacement

These Special Provisions identify and modify certain sections of the Standard Specifications which are incorporated into this ITB and resulting Contract in ITB section C.2.6. The Standard Specifications are available online at:

https://www.oregon.gov/odot/Business/Specs/2024_STANDARD_SPECIFICATIONS.pdf

All number references in the special provisions shall be understood to refer to the sections and subsections of the Standard Specifications bearing like numbers.

SECTION 00220 - ACCOMMODATIONS FOR PUBLIC TRAFFIC

Add the following subsection:

00220.42 Bridge Site Road Closure - Close the road to traffic at the Bridge site during reconstruction of the Bridge. Do not close the road until all Materials and Equipment are on hand or guaranteed to be delivered so that the Work can be done in an efficient manner with a minimum period of road closure.

The road closure will not be allowed until the area and the detour route are signed according to the TCP and the requirements of Section 00221 and Section 00222.

Add the following subsection:

00220.45 Load Restrictions on Bridges -

For Structure No. 01400, limit the combined weight of construction vehicles, Equipment, and daily Material usage to 65,000 pounds for every 1,000 square feet of surface area plus the weight of long term storage of Materials to 25,000 pounds for every 100 square feet of surface area of the Bridge or a total of 200,000 pounds for each span of the Bridge, whichever is less.

The Contractor may request alternate loadings by submitting, 30 Calendar Days before proposed loadings, stamped loading calculations and data according to 00150.35.

SECTION 00222 – TEMPORARY TRAFFIC CONTROL SIGNS

Comply with Section 00222 of the Standard Specifications modified as follows:

00222.45(b) Portable Changeable Message Signs - Add the following bullets to the end of this subsection:

· At least fourteen Calendar Days before the full-closure of Skipanon River Bridge (BR1400), place one or more PCMS displaying the following message as shown on US101, or as directed:

SECTION 00253 - TEMPORARY WORK ACCESS AND CONTAINMENT

Comply with Section 00253 of the Standard Specifications modified as follows:

00253.00 Scope - Add the following paragraph to the end of this subsection:

On Structure No. 01400, provide temporary work access and containment system(s) for removal of span 2.

00253.40 General - Add the following paragraph to the end of this subsection:

Containment and work platforms do not extend more than 2.3 feet below bottom of existing Structure.

Add the following subsection:

00253.44 Marine Traffic Restrictions -

Bridge No. 01400 may not be closed to marine traffic. Add the following subsection:

00253.46 Loads Placed on Structure Roadway, Shoulders, and Sidewalks - When a Traffic Lane, Shoulder or sidewalk is closed the following loading may be applied to the Structure(s):

When a Traffic Lane or Shoulder closures are allowed on Structure No.01400:

· Equipment, vehicles, and Materials may be placed in the closed:

· Traffic Lane

· Shoulder

· Sidewalk

· Equipment, vehicles, and Materials may NOT be placed in or on:

· Active Traffic Lane

· No more than one vehicle operating under D.O.T. overload permit will be allowed within the closed area on each span of the Structure.

The combined effect of all loads in the closed area(s) will be limited to the lesser of:

· Bending moment and maximum shear produced by one lane of Oregon Type 3S2 on each span of the Structure;

SECTION 00290 - ENVIRONMENTAL PROTECTION

Comply with Section 00290 of the Standard Specifications modified as follows: Add the following subsection:

00290.30(a)(7) Water Quality:

· Do not discharge contaminated or sediment-laden water, including drilling fluids and waste, or water contained within a work area isolation, directly into any waters of the State or U.S. until it has been satisfactorily treated (using a best management practice such as a filter, settlement pond, bio-bag, dirt-bag, or pumping to a vegetated upland location).

· Do not use permanent stormwater quality treatment facilities to treat construction runoff unless prescribed by an ESCP approved under Section 00280.

· If construction discharge water is released using an outfall or diffuser port, do not exceed velocities more than 4 feet per second, and do not exceed an aperture size of 1 inch.

· Do not use explosives under water.

· Implement containment measures adequate to prevent pollutants or construction and demolition materials, such as waste spoils, fuel or petroleum products, concrete cure water, silt, welding slag and grindings, concrete saw cutting by-products and sandblasting abrasives, from entering waters of the State or U.S.

· Implement containment measures adequate to prevent flowing stream water from coming into contact with concrete or grout within the first 24 hours after placement.

· Do not end-dump riprap into the waters of the State or U.S. Place riprap from above the ordinary high water line.

· Cease Project operations under high flow conditions that may result in inundation of the Project area, except for efforts to avoid or minimize resource damage.

· The Engineer retains the authority to temporarily halt or modify the Work in case of excessive turbidity or damage to natural resources.

· If Work activities violate permit conditions or any requirement of this subsection, stop all in-water work activities and notify the Engineer.

· Do not cause a visible sediment plume in waters of the State or U.S. Add the following subsection:

00290.34 Protection of Fish and Fish Habitat - Add the following paragraph:

Meet with the Agency Biologist, Resource Representative, Engineer, and inspector on site, before moving equipment on-site or beginning any work, to ensure that all parties understand the locations of sensitive biological sites and the measures that are required to be taken to protect them.

00290.34(a) Regulated Work Areas - Replace this subsection, except for the subsection number and title, with the following:

The regulated work area is the area at or below the Highest Measured Tide (HMT) elevation shown on the plans.

Do not install materials within the regulated work area.

A floating structure may be used within the regulated work area for safe access for labor and transportation of materials to the underside of the bridge.

Add the following subsection:

00290.34(c) Aquatic Species Protection Measures Required by Environmental Permits:

(1) General Requirements:

· Do not install fish ladders (for example: pool and weirs, vertical slots, fishways) or fish trapping systems.

· Do not apply surface fertilizer within 50 feet of any stream channel.

Use heavy equipment as follows:

· Choice of equipment must have the least adverse effects on the environment (for example: minimally sized, low ground pressure).

· Secure absorbent material around all stationary power equipment (for example: generators, cranes, drilling equipment) operated within 150 feet of wetlands, waters of the State, waters of the U. S., drainage ditches, or water quality facilities to prevent leaks, unless suitable containment is provided to prevent spills from entering waters of the State or waters of the U.S.

· Do not cross directly through a stream for construction access, unless shown or approved. If shown or approved, cross perpendicular to the stream and do not block stream flow. When a crossing is no longer needed, completely remove the crossing and restore the soils and vegetation to the original condition.

· Store fuel and maintain all equipment in staging areas that are at least 150 feet away from any waters of the State, waters of the U.S., or storm inlet or on an impervious surface that is isolated from any waters of the State, waters of the U.S., or storm inlet.

· If temporary access roads are needed within 150 feet of any body of water, use existing routes unless new routes are shown or approved.

· Before beginning work on temporary access routes that are not shown, submit a proposal to the Engineer for approval.

(2) Special Aquatic Habitats - The following exploration or construction activities are not allowed in special aquatic habitats:

· Use of pesticides and herbicides, unless allowed according to Section 01030.

· Use of short pieces of plastic ribbon to determine flow patterns.

· Temporary roads or drilling pads built on steep slopes, where grade, soil type, or other features suggest a likelihood of excessive erosion or slope failure.

· Exploratory drilling in estuaries that cannot be conducted from a work barge, or an existing bridge, dock, or wharf.

· Installation of a fish screen on any permanent water diversion or intake that is not already screened.

· Drilling or sampling in an EPA-designated Superfund Site, a state-designated clean- up area, or the likely impact zone of a significant contaminant source, as identified by historical information, U. S. Army Corps of Engineers representative, or the Agency.

(3) Treated Wood - Treated wood includes any wood treated with any pesticide or wood preservatives. Do not use lumber, pilings, or other wood products that are treated or preserved with pesticidal compounds below the ordinary high water (OHW) or as part of an in-water or over-water structure, except as described below:

· Store treated wood shipped to the Project out of contact with standing water and wet soil, and protected from precipitation.

· Visually inspect each load and piece of treated wood. Reject for use in or above aquatic environments if visible residues, bleeding of preservative, preservative- saturated sawdust, contaminated soil, or other matter is present.

· Use pre-fabrication to the extent feasible. When field fabrication is necessary, all cutting and drilling of treated wood, and field preservative treatment of wood exposed by cutting and drilling, shall occur above the OHW. Use tarps, plastic tubs, or similar devices to contain the bulk of any fabrication debris, and wipe off any excess field preservative.

· All treated wood structures, including pilings, shall have design features to avoid or minimize impacts and abrasion by livestock, pedestrians, vehicles, vessels, and floats.

· Treated wood may be used to construct a bridge, over-water structure or an in-water structure, with the exception of the work containment system, provided that all surfaces exposed to leaching by precipitation, overtopping waves, or submersion are coated with a water-proof seal or barrier are maintained. Apply and contain coatings and paint-on field treatment to prevent contamination. Surfaces that are not exposed to precipitation or wave attack, such as parts of a timber bridge completely covered by the bridge deck, are exempt from this requirement.

· During demolition of treated wood, ensure that no treated wood debris falls into the water. If treated wood debris does fall into the water, remove it immediately.

· Store removed treated wood debris in appropriate dry storage areas, at least 150 feet away from the regulated work area.

(4) Floating Structures - The following types of over-water or in-water structures are not allowed:

· boat house

· boat ramp made of asphalt

· buoy or float in an active anchorage or fleeting area

· covered moorage

· floating storage unit

· houseboat

· marine

· pier

· non-water related facilities (including staging areas) inside riparian management areas

· any other over-water structure more than 6-feet wide unless otherwise approved in writing by appropriate regulatory agencies through the Engineer The following conditions apply to over-water or in-water structures:

· Concrete boat ramps that consist of pre-cast concrete slabs below the ordinary high water elevation, and higher elevation portions that are completed in the dry so that no wet concrete that has cured less than 24 hours is allowed to contact any wetland or waters of the State or waters of the U.S.

· Rock may be used to construct a boat ramp footing, or other protection necessary to prevent scouring, down-cutting, or failure of the boat ramp, provided that the rock does not extend further than 4 feet from the edge of the ramp in any direction.

· Any replacement roof, wall, or garage door for covered moorages and boat houses must be made of translucent materials or skylights. In addition, each side, except the door, of the boat house shall have windows at least 4 feet wide installed the length of the boat house, subject to breaks only for structural support.

· An existing marina may be modified within the existing footprint of the moorage, or in the water more than 50 feet from the shoreline and more than 20 feet deep, except do not place structures in areas that support aquatic vegetation or areas where boat operations may damage aquatic vegetation.

· Fit all pilings, mooring buoys, and navigational aids with devices to prevent perching by piscivorous birds.

· Permanently encapsulate all synthetic flotation material to prevent breakup into small pieces and dispersal in water.

· Install small temporary floats less than 7 Calendar Days before a scheduled event, remove them 5 Days after a scheduled event is concluded, and do not leave them in place longer than 21 Calendar Days.

· Install mooring buoys and temporary floats (for example: shellfish traps) more than 300 feet from native submerged aquatic vegetation, more than 50 feet from the shoreline, and in water deeper than 20 feet deep at all times, or as necessary to ensure that gear does not ground out unnecessarily, and boats do not prop wash the bottom.

When using a barge (the term, “barge” includes floating structures):

· Barge decks must be watertight.

· Connect modular barge systems structurally to produce a single, fixed deck.

· Fit barge deck perimeters with watertight curbing sufficient to contain materials on the barge deck. if scuppers are present, they will be plugged.

· The Agency will need to approve any barge being used.

· Before moving the barge to the Project Site, unless the barge is transported solely by water and entirely within the State, inspect the barge and ballast for invasive species to ensure that invasive species are not brought to the Project Site. Notify the Oregon State Marine Board if invasive species are found.

· Before moving the barge to the Project Site, clean and pressure wash the barge deck.

· Spuds or Spud like anchoring is not allowed.

· Install and maintain containment measures to prevent barge surface runoff from flushing oil, fuel, or other contaminants into the water.

· Secure all Equipment, portable toilet facilities, and containers with fuel, hazardous materials, or waste to the barge deck.

· If the barge is equipped with a toilet facility, pump it out into an approved waste removal system when work requiring a barge is complete, or as often as is necessary. Move temporary toilet facilities to shore before pumping them out.

· Equipment or fuels must have their own primary containment on the barge.

· If a fuel container is used on the barge, provide a double-walled fuel container and place an absorbent containment boom around the container when it is on the barge.

· Remove hand carried fuel containers from the barge at the end of each work shift unless containers are secured to the barge and stored within a secondary containment vessel of sufficient capacity to hold the entire volume of liquid available.

· Refill hand carried fuel containers within a secondary containment vessel of sufficient capacity to hold the entire volume of liquid available.

· Provide individual containment for each piece of Equipment on the barge, including containment pans or absorbent booms to locally contain minor spills.

· Remove waste material from the barge at least every 3 working Days and:

· Before any pause in work that is longer than 1 Day; or

· Before reaching the calculated safe load weight of the barge according to Section 00253.

(5) Temporary Power, Communication and Water Lines - Before installing temporary power, communication, or water lines across streams or bodies of water, submit a proposed plan to the Engineer for approval. Do not begin installation before receiving approval from the Engineer. Proposed plans for installation of temporary power, communication, and water lines and stream crossings shall utilize the following design methods in the listed order of priority:

1. Aerial lines, including lines hung from existing bridges.

2. Directional drilling, boring and jacking that spans the channel migration zone and any associated wetland.

3. Trenching, which is restricted to intermittent streams and may only be used when the stream is naturally dry. For all sections of trenches below the ordinary high water line, backfill with native material and cap with clean gravel suitable for fish use in the project area.

Align each crossing as perpendicular to the watercourse as possible. For drilled, bored, or jacked crossings, ensure that the line is below the total scour prism. Return any large wood displaced by trenching or plowing as nearly as possible to its original position, or otherwise arranged to restore habitat functions.

(6) Injured Fish Notification - If a dead or injured fish is found in the project area, immediately notify the Agency. If the injured fish is in a location where further injury or stress may take place, attempt to move the fish to a safer location, if one is available, near the capture site while keeping the fish in the water and reducing its stress as much as possible. Do not disturb the fish after it has been moved. If the fish is dead or dies while being captured or moved, save the fish and any tags. The Agency will notify appropriate regulatory agencies about the injured or dead fish and provide additional direction to the Contractor.

00290.36(a) Migratory Birds - Add the following to the end of this subsection:

Do not disturb migratory bird nesting habitat (shrubs, trees, and structures), or clear vegetation from March 1 to September 1 of each year without prior written approval from the Engineer. Notify the Engineer, in writing, a minimum of 10 Calendar Days prior to starting activities that could harm nesting birds.

(1) Bird Management - Bird management activities to comply with the Migratory Bird Treaty Act (16 U.S.C. 703 712) will be performed by the Agency. Ensure that the Agency and its permitted agents have access to the project area, as needed to prevent migratory bird nesting. Nesting prevention may include daily bird harassment and the installation and maintenance of devices that exclude birds.

Do not disturb migratory bird nesting habitats (shrubs, trees, and structures), or clear vegetation from March 1 to September 1 of each calendar year without prior written approval from the Engineer. Notify the Engineer, in writing, a minimum of 10 Calendar Days prior to starting activities that could harm nesting birds.

Add the following subsection:

00290.42 Work Containment Plan - A Work Containment Plan (WCP) is required on this Project for work above the water and work on any floating structures activities.

Develop and submit a WCP for approval at least 28 Calendar Days prior to mobilization for work above the water and work on any floating structures activities. Maintain a copy of the WCP on the Project Site at all times during construction, readily available to employees and inspectors. Ensure that all employees comply with the provisions of the WCP. Design the WCP to avoid or minimize disturbance to protected features (sensitive cultural or natural resources, regulated work areas, aquatic life or habitat in regulated work areas) related to Contractor operations.

Before developing the WCP, meet with Agency to review the Contractor’s activities that require the WCP to ensure that all parties understand the locations of protected features to be avoided and the measures needed to avoid and protect them.

Notify the Engineer at least 10 Calendar Days before beginning work access or containment construction activities.

The Agency reserves the right to stop Work and require the Contractor to change the WCP methods and Equipment before any additional Contract Work, at no additional cost to the Agency, if and when, in the opinion of the Agency, such methods jeopardize sensitive cultural or natural resources, regulated work areas, or aquatic life or habitat in regulated work areas.

The WCP shall identify how the Contractor's construction operations will protect regulated features during mobilization, construction, maintenance, and demolition. Include a narrative describing compliance with Section 00290 as related to construction, operation, and demolition activities specified in Section 00253.

Design, construct, maintain, and remove temporary work access and containment systems according to Section 00253.

00290.90 Payment - Add the following paragraph(s) to the end of this subsection:

The work containment plan will be paid for at the Contract lump sum amount for the item "Work Containment Plan".

Payment will be payment in full for furnishing all Materials, Equipment, labor, and Incidentals necessary to complete the Work as specified. Payment includes providing and updating the Work Containment Plan.

SECTION 00295 - ASBESTOS MATERIALS

Section 00295, which is not a Standard Specification, is included in this Project by Special Provision.

Description

00295.00 Scope - An asbestos survey was performed on January 25, 2023 that will be Bridge 01400 that will be repaired for this Project. No asbestos-containing materials (ACMs) were identified on the inspected structure. The March 13, 2023 ODOT Hazardous Structural Materials Report, Skipanon Bridge, Key # M23004, OR104 Spur, MP 4.62, Bridge #01400, Clatsop County documenting the asbestos survey within the Project is available from the Engineer. Maintain a copy of this report and all additional asbestos survey results on site at all times and readily available to employees and inspectors during demolition and repair activities.

SECTION 00296 - PAINT AND PAINTED MATERIALS

Section 00296, which is not a Standard Specification, is included in this Project by Special Provision.

Description

00296.00 Scope - In addition to the requirements of Section 00290, remove lead, chromium, and cadmium based paints, and materials coated with lead, chromium, and cadmium based paints, according to the following Specifications.

Lead-, chromium- and cadmium-based paints coat the metal beams on the Skipanon Bridge. Analysis of paint samples collected from this Bridge detected the concentrations of total lead, cadmium, and chromium in the metal paint indicated in Table 00296-3 below:

Table 00296-3

ND = not detected above the laboratory detection limit.

Lead-, chromium- and cadmium-based paints coat the wood on the rails on the Skipanon Bridge. Analysis of paint samples collected from this Bridge detected the concentrations of total lead, cadmium, and chromium in the wood paint indicated in Table 00296-4 below:

Table 00296-4

ND = not detected above the laboratory detection limit.

The March 13, 2023 ODOT report titled, Hazardous Structural Materials Report, Skipanon Bridge, Key # M23004, OR104 Spur, MP 4.62, Bridge #01400, Clatsop County documenting these analyses, is available from the Engineer.

Unless otherwise tested, assume that all coatings contain lead, chromium, and cadmium and handle paint and painted materials accordingly during demolition.

00296.03 Submittals - Submit the following documents:

· A job specific written compliance program, according to 29 CFR 1926.62(e)(2), at least 10 Calendar Days before the pre-construction conference. When applicable, include compliance procedures for cadmium and chromium VI, according to 29 CFR 1926.1127 and 29 CFR 1926.1126.

· Modifications to the written compliance program within 7 Calendar Days of the modifications.

· Current employee training certificates and medical surveillance information before beginning work that disturbs paint containing lead, cadmium or chromium.

· Within 48 hours of completing or receiving them:

· Disposal and recycling facility permits.

· Transport manifests and bill-of-ladings.

· All reuse, recycling, and disposal receipts.

· All analytical test results.

00296.04 Documentation - Include paint and painted materials management and planned reuse, recycling, and disposal information in the pollution control plan. Obtain Engineer approval for the specific reuse, recycling, and disposal methods for all materials before beginning demolition work.

Complete, sign and pay all required fees for all required permits, manifests, and bill-of-lading forms for transport and disposal of the paint and painted materials.

Labor

00296.30 Personnel Qualifications - Provide employees trained in lead awareness, according to 29 CFR 1926.62(l), and also trained according to 29 CFR 1926.1126(j)(2) for chromium and 29 CFR 1926.1127(m)(4) for cadmium, during demolition of painted portions of the structures.

Construction

00296.40 Handling - Minimize employee exposure to the metals contained in the paint. Provide containment that prevents release of paint chips to the environment. Do not remove or separate paint from painted substrates, unless required to accomplish repair activities.

00296.43 Painted Metal Management - Reuse, recycle, or dispose of painted metal according to any of the following:

· Reuse by Others - Provide or sell painted non-structural scrap metal to the following:

· Provide to ODOT for use on other projects.

· Provide to ODOT Maintenance Section.

· Provide or sell to other government Agencies.

· Provide or sell to contractors for their reuse.

Obtain the recipients signature on the attached disclaimer form, acknowledging their awareness that the scrap metal contains lead, chromium, and cadmium based paint before giving them possession.

· Recycle at Recycling Facility - Transport the painted scrap metal along with the paint analytical results to a recycling facility. Obtain the recipients signature on the attached disclaimer form, acknowledging their awareness that the scrap metal contains lead, chromium and cadmium based paint.

00296.44 Painted Wood Management - Dispose of painted wood at a permitted municipal solid waste landfill or a permitted construction and demolition landfill, according to the DEQ "Hazardous Waste/Toxics Reduction Policy Clarification: Management of Building Demolition Waste" Policy 1997-PO-002A.

Measurement

00296.80 Measurement -

The quantities of painted wood disposed will be measured on the weight basis, per ton, based on the recycling or disposal facility weigh tickets.

No measurement of quantities will be made for reusing, recycling, or disposing of painted metal.

Payment

00296.90 Payment - The accepted quantities of Work performed under this Section will be paid for at the Contract unit price, per unit of measurement, for the following items:

Pay Item Unit of Measurement

(b) Painted Wood Ton

Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment, labor, and Incidentals necessary to complete the Work as specified.

No separate or additional payment will be made for:

Attachment A Lead, Chromium, and Cadmium Based Paint Acknowledgement Form

[Contractor] [Bridge Identification] [Description of Scrap Metal]

[Recipient] acknowledges that they are aware that metal and materials received from [Contractor] on [Date(s)] may contain lead, chromium, or cadmium based paint. Recipient further acknowledges that it is aware of the risk to human health and the environment posed by exposure to lead, chromium and cadmium based paint. All storage, use, sale, and disposal of materials containing lead, chromium or cadmium based paint and any removal of lead, chromium, or cadmium based paint from the materials by Recipient will be conducted in compliance with all applicable Federal and State statutes and regulations, including but not limited to 40 CFR 262 through 265 and OAR Chapter 340, Divisions 100 through 106. Recipient acknowledges that they are solely responsible for any liability or damages resulting from the storage, use, sale, and disposal of the materials and removal of lead, chromium or cadmium based paint by Recipient and Recipient will indemnify and hold harmless the Contractor and the Oregon Department of Transportation from any such claims of liability or damages.

SECTION 00501 - BRIDGE REMOVAL

Comply with Section 00501 of the Standard Specifications modified as follows: 00501.00 Scope - Add the following paragraph(s) to the end of this subsection: Remove portions of the existing bridge over Skipanon River as shown.

Add the following subsection:

00501.02 Plans - Plans of the existing Structure are available from the Engineer. Prints of these plans are available upon request.

Add the following subsection:

00501.03 Submittals - Submit unstamped bridge removal plans according to 00150.35 21 Calendar Days before beginning removal work.

Include the following information in the submittal:

· Removal sequence, including contractor staging and traffic staging.

· Detailed schedule of bridge removal work.

· Type of equipment that will be used, including size and capacity.

· Equipment location during removal operations.

Do not begin bridge removal work until the bridge removal plans have been approved.

SECTION 00503 - BRIDGE DECK COLD PLANE PAVEMENT REMOVAL

Comply with Section 00503 of the Standard Specifications modified as follows:

00503.20 Equipment for Grinding on Bridge Decks - Add the following to the paragraph that begins "To remove Pavement from bridge decks…":

Limit the gross operational weight of machines to comply with the load limitations of 00220.45. Limit machines to a forward speed of 2.5 feet per minute. Operate at a drum speed of at least 120 RPM.

SECTION 00504 - CONCRETE DECK SURFACE PREPARATION

Comply with Section 00504 of the Standard Specifications modified as follows:

00504.21(b) Scarifying Equipment – Replace the paragraph that begins “Furnish power- operated diamond grinding…” with the following paragraph:

Furnish power-operated diamond grinding, micro-milling, or shot blasting scarifying Equipment capable of uniformly removing the existing surface to depths required.

00504.21(b)(4) Hydroblasting – Delete this subsection.

00504.40(f) Structural Overlay Removal - Replace the paragraph that begins “Remove the existing Structural Overlay to the parent …” with the following paragraph:

Remove the existing Structural Overlay to the parent deck surface. Use Equipment that can sufficiently remove the overlay without exceeding 1/2 inch of parent deck removal.

00504.41(b) Class 1 Preparation – Delete the bullet that begins “Hydroblasting may only be…” 00504.42(a) PPC, MPCO, and Membrane Installations – Replace this subsection with the following:

00504.42(a) PPC, MPCO, Deck Seal, and Membrane Installations - Prepare all surfaces that are to be in contact with the membrane, deck seal or overlay, including vertical contact areas, as follows:

· Clean the entire surface by shot-blasting within 24 hours of placing the membrane or overlay.

· Sweep the area magnetically to remove metal residue.

· Blow clean the surfaces with compressed air.

· Immediately after surface preparation is complete cover the prepared deck with clear plastic, overlapping it to prevent contaminants from construction vehicles or other sources from contacting the deck. Maintain the covering until PPC, MPCO, deck seal or membrane installation.

· If the prepared surface becomes contaminated by spills, rain, or other contaminant before placing the membrane or overlay, prepare the surface again according to this Subsection.

00504.42(b) SCO Overlays – Replace the bullet that begins “Clean the entire surface by shot-blasting…” with the following bullet:

· Clean the entire surface by shot-blasting. Shot-blasting is not required on final surfaces that were prepared by chipping or jack hammering.

SECTION 00530 - STEEL REINFORCEMENT FOR CONCRETE

Comply with Section 00530 of the Standard Specifications modified as follows:

00530.80(a) Lump Sum - Add the following to the end of this subsection: The estimated quantity of reinforcement is:

SECTION 00560 - STRUCTURAL STEEL BRIDGES

Comply with Section 00560 of the Standard Specifications modified as follows:

00560.04 Erection Plan - Replace this subsection, except for the subsection number and title, with the following:

Submit an erection plan with unstamped Working Drawings according to 00150.35 at least 21 Calendar Days before the start of the steel erection Work. Include the proposed erection method and the amount and character of Equipment to be used for review. Do not perform Work until approval has been obtained. This review does not relieve the Contractor of the responsibility for the safety of the method or Equipment, or from carrying out the Work in full according to the Plans and Specifications.

00560.80 Measurement - Add the following to the end of this subsection: The estimated quantity of structural steel is:

SECTION 00570 - TIMBER STRUCTURES

Comply with Section 00570 of the Standard Specifications modified as follows:

00570.10 Materials - Add the following to the end of this subsection: Furnish timber and lumber meeting the following grading requirements:

· Timber curbs shall be douglas fir combination no. 1

· Glued Laminated deck panels shall be douglas fir combination EWS 5

SECTION 00582 - BRIDGE BEARINGS

Comply with Section 00582 of the Standard Specifications.

SECTION 00585 - EXPANSION JOINTS

Comply with Section 00585 of the Standard Specifications modified as follows:

00585.80 Measurement - Add the following to the end of the subsection: The estimated quantities of joints are:

Quantity Structure Joint Type (Foot)

Bridge No. 01400 Asphaltic Plug Joint 52

SECTION 00587 - BRIDGE RAILS

Comply with Section 00587 of the Standard Specifications modified as follows: 00587.80 Measurement - Add the following to the end of this subsection: The estimated quantity of bridge rail is:

Quantity

SECTION 00590 - POLYMER MEMBRANE

Comply with Section 00590 of the Standard Specifications.

SECTION 00592 - ROLLED WATERPROOFING MEMBRANE

Comply with Section 00592 of the Standard Specifications.

SECTION 00594 - PREPARING AND COATING METAL STRUCTURES

Comply with Section 00594 of the Standard Specifications modified as follows:

00594.00 Scope - Replace this subsection, except for the subsection number and title, with the following:

This Work consists of preparing and coating new steel on Bridge No. 01400, span 2. Hot dip galvanize all new steel before applying coating system.

00594.10 Materials - Add the following to the end of the subsection: For steel rolled beams and cross beams on Bridge No. 01400:

Furnish a non-ferrous coating from the QPL. Provide top-coat color that conforms to #24272 of SAE AMS-STD-595.

00594.90(a) New Metal Structures - Replace this subsection, except for the subsection number and title, with the following:

No separate payment will be made for preparing and coating new metal Work. Payment for this Work, including correction of damages, will be included in payment made for appropriate items under which this Work is required.

SECTION 00744 - ASPHALT CONCRETE PAVEMENT

Comply with Section 00744 of the Standard Specifications modified as follows:

00744.11(a) Asphalt Cement - Add the following to the end of this subsection: Provide PG 64-22 grade asphalt cement for this Project.

00744.17 Acceptance - Replace this subsection, except for the subsection number and title, with the following:

If the test result for each mix gradation constituent, asphalt content, and density measurement is within the specification limits, the material will be accepted. If the asphalt content, one or more gradation constituents, or the density measurement are not within the specification limits, the material that is not within the specification limits will be accepted according to 00150.25.

00744.41 Mixing Temperature - Replace the table with the following:

Temperature, °F

00744.49 Compaction - Replace the paragraph that begins "Determine compliance with…" with the following paragraph:

Determine compliance with density Specifications by random testing of the compacted surface with calibrated nuclear gauges. Determine the density by averaging QC tests performed by a CDT with the nuclear gauge operated in the backscatter mode according to AASHTO T 355 at one random location for each 100 Tons of asphalt concrete placed, but take no less than 10 tests each shift. Do not locate the center of a density test less than 1 foot from the Panel edge. Calculate MAMD according to ODOT TM 305. The Engineer may waive compaction testing requirements when less than 500 Tons of ACP is placed in a single work shift.