DISTRICT 2-616470-137024-A-1.pdf

Ten Park Plaza, Suite 4160, Boston, MA 02116 Tel: 857-368-4636, TTY: 857-368-0655

October 23, 2026 Proposal No. 616470-137024

ADDENDUM NO. 1

To Prospective Bidders and Others on:

DISTRICT 2

Scheduled and Emergency Facility Repairs and Improvements at Various Locations

THIS PROPOSAL TO BE OPENED AND READ: TUESDAY, NOVEMBER 3, 2026, at 2:00 P.M.

Transmitting changes to the Contract Documents as follows:

RESPONSE TO BIDDER’S QUESTION:

DOCUMENT 00715:

DOCUMENT A00801:

1 page.

Deleted document in its entirety and inserted new document.(22 pages).

Revised page 27.

Take note of the above, substitute the revised page for the original, delete document indicated and insert new document in proper order, and acknowledge Addendum No. 1 in your Expedite Proposal file before submitting your bid

Very truly yours, Eric M. Cardone, P.E.

Construction Contracts Engineer

DSK

cc: Ancarlos M. Youssef, Project Manager

This page is left blank intentionally.

Proposal No. 616470-137024

DISTRICT 2

Scheduled and Emergency Facility Repairs and Improvements at Various Locations

Response to Bidder’s Question Addendum No. 1, October 23, 2026

NEL Corporation, email dated October 20, 2026

Question 1: Item 100.1 - Roofers MassDOT has included shingles, aluminum, wood, steel slate, asphalt, tar, roofing cement, caulking, plastic coatings, elastomeric, waterproofing membranes, gravel and pebbles in the roofer’s artisan tool kit. The contractor cannot estimate the quantities of these materials that will be required. On other similar contracts within MassDOT these items have been removed from the tool kit. Will MassDOT remove the material items listed above from the roofer’s artisan tool kit for this contract also?

Response 1: See revised page A00801-27.

This page is left blank intentionally.

Massachusetts Department of Transportation Highway Division

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DOCUMENT 00715

SUPPLEMENTAL SPECIFICATIONS

SEPTEMBER 30, 2026

The 2026 Standard Specifications for Highways and Bridges are amended by the following modifications, additions and deletions. These Supplemental Specifications prevail over those published in the Standard Specifications.

The Specifications Committee has issued these Supplemental Specifications for inclusion into each proposal until such time as they are updated or incorporated into the next Standard Specifications.

Contractors are cautioned that these Supplemental Specifications are dated and will change as they are updated.

DIVISION I

GENERAL REQUIREMENTS AND COVENANTS

SECTION 5.00: CONTROL OF WORK

Subsection 5.03: Conformity with Plans and Specifications Change the MGL reference in the first sentence to Chapter 30, Section 39I (from Section 39L).

SECTION 7.00: LEGAL RELATIONS AND RESPONSIBILITY TO PUBLIC

Subsection 7.16: Claims of Contractor for Compensation

Such notice by the Contractor and the keeping of costs by the Engineer shall not in any way be construed as providing the validity of the claim. The provisions of this subsection shall not apply to Extra Work ordered by the Engineer in writing.

Replace the third paragraph of 7.16..C Appeal to the Administrative Law Judge (Step 3) with the following:

At any time after the determination by the Claims Committee, the Contractor, at its sole discretion may pursue the matter in the Superior Court Department of the Commonwealth of Massachusetts in the County of Suffolk.

The exclusive jurisdiction and venue for any legal action or proceeding, at Law or in equity, arising out of or relating to the Contract Documents or the Project, shall be the Superior Court Department of the Commonwealth of Massachusetts in the County of Suffolk. The Contractor waives all objections it might have to the jurisdiction or venue of such court and hereby consents to such jurisdiction, regardless of the Contractor’s residence or domicile, for any such action or proceeding. This subsection does not relieve the Contractor’s obligation to submit the dispute to Superior Court within the applicable statutes of limitations or repose and the Department does not hereby waive its rights to assert defenses based upon such statutes.

Proposal No. 616470-137024 Addendum No.1: October 23, 2026

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DIVISION II

CONSTRUCTION DETAILS

SUBSECTION 119: CONTROL OF RODENTS

Subsection 119.60:A: Initial Treatment Replace the first sentence with the following;

This phase shall start immediately after Notice to Proceed and shall be applied in all buildings to be razed and to all other buildings and areas within the limits of construction where, in the Engineer's judgment, rodents have gathered or may gather during the construction period.

SECTION 200: DRAINAGE

SUBSECTION 227: DRAINAGE SYSTEM SEDIMENT

Subsection 227.30, Method of Measurement Change the subsection number to 227.80

Subsection 227.31, Basis of Payment Change the subsection number to 227.81

Subsection 227.31, Payment Items Change the subsection number to 227.82

SUBSECTION 430: CEMENT CONCRETE BASE COURSE

Subsection 430.40: General Change Applied Crack Sealer to Hot Applied Crack Sealer.

SUBSECTION 476: CEMENT CONCRETE PAVEMENT

Subsection 476.20: Materials Delete Preformed Bituminous Joint Filler for Concrete ‐ M3.05.5 and add the following in M number sequence:

Preformed Expansion Joint Filler M9.14.0

SUBSECTION 477: MILLED RUMBLE STRIPS

Subsection 477: Milled Rumble Strips Replace this subsection with the following:

DESCRIPTION

477.20: General

The work consists of constructing rumble strips on roadways by milling grooves into finished surfaces. Milled Rumble Strips are categorized as Type A, Type B, Type C, or Type D. Type A are rectangular milled grooves at regular intervals in the paved surface, Type B rumble strips are rectangular grooves at regular intervals with designed gaps between intervals to accommodate bicyclists, and Type C and Type D rumble strips form continuous grooves in the paved surface in the form of a vertical sinusoidal wave pattern.

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CONSTRUCTION METHODS

477.61: Equipment

The equipment shall self-align with the slope of the roadway surface and/or any irregularities in the roadway surface.

The Contractor shall demonstrate to the Engineer the ability to achieve the desired groove without tearing or snagging the roadway surface prior to beginning the work.

477.62: Installation of Rumble Strips

Rumble strips shall be installed in accordance with the locations, dimensions, and Type shown on the plans.

Type A and Type B rumble strips shall be installed after the longitudinal pavement markings they supplement (typically edge lines or channelizing lines) are in place. Installation of any diagonal or chevron pavement markings that cross the Type A or Type B rumble strips shall only occur after the rumble strips are in place.

Type C rumble strips shall be installed after the location of the longitudinal pavement markings they supplement (typically center lines) has been laid out, but before the pavement markings are installed. The pavement markings shall only be installed after the Type C rumble strips are in place.

Type D rumble strips shall be installed after the longitudinal pavement markings they supplement (typically center lines) are in place.

477.63: Control of the Work Area

At the end of each working day, all equipment shall be moved to a location where it does not present a hazard to traffic. The pavement shall be cleaned by sweeping and the work area shall be reopened to traffic.

Pavement millings shall become the property of the Contractor and shall be removed and disposed of off-site.

COMPENSATION

477.80: Method of Measurement

Milled Rumble Strip (Type A), Milled Rumble Strip (Type C), and Milled Rumble Strip (Type D) will be measured per foot of installed rumble strip. Milled Rumble Strip (Type B) will be measured per foot of installed rumble strip excluding the designed gaps. Breaks at castings, bridge decks, intersections, or other breaks will not be measured for payment for all types.

477.81: Basis of Payment

Payment for Milled Rumble Strip (Type A), Milled Rumble Strip (Type B), Milled Rumble Strip (Type C), and Milled Rumble Strip (Type D) will be made at the contract unit price per foot of rumble strips, complete in place.

Such payment will be full compensation for furnishing all equipment and labor for satisfactorily performing the work including cleanup and disposal of excess materials.

477.82: Payment Items

Item number Description Unit

477. Milled Rumble Strip (Type A) Foot

477.1 Milled Rumble Strip (Type B) Foot

477.2 Milled Rumble Strip (Type C) Foot

477.3 Milled Rumble Strip (Type D) Foot

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SUBSECTION 482: SAWCUTTING

Subsection 482.80: Method of Measurement Replace this subsection with the following:

Sawcutting, when included in the Contract as its own bid item, will be measured for payment by the foot along the cut line, regardless of depth.

SECTION 600: HIGHWAY GUARD, FENCES AND WALLS

SUBSECTION 628: IMPACT ATTENUATORS

Subsection 628.82: Payment Items Replace this subsection with the following:

Item number Description Unit

628.302 Permanent Impact Attenuator, Non-Redirective, TL-2 Each

628.303 Permanent Impact Attenuator, Non-Redirective, TL-3 Each

628.304 Temporary Impact Attenuator, Non-Redirective, TL-2 Each

628.305 Temporary Impact Attenuator, Non-Redirective, TL-3 Each

628.312 Permanent Impact Attenuator, Redirective, TL-2 Each

628.313 Permanent Impact Attenuator, Redirective, TL-3 Each

628.314 Temporary Impact Attenuator, Redirective, TL-2 Each

628.315 Temporary Impact Attenuator, Redirective, TL-3 Each

628.322 Permanent Impact Attenuator, Low-Maintenance, TL-2 Each

628.323 Permanent Impact Attenuator, Low-Maintenance, TL-3 Each

SECTION 800: TRAFFIC CONTROL DEVICES

SUBSECTION 801: Conduit, Manholes, Handholes, Pull Boxes and Foundations

Subsection 801.61.C: Pre-Cast Concrete Units Replace this subsection with the following;

The construction methods for pre-cast concrete units shall conform to the relevant provisions of M4.09.0 Precast, Prestressed, and Prefabricated Concrete Products

SUBSECTION 813: WIRING, GROUNDING AND SERVICE CONNECTIONS

Subsection 813.20: General Replace this subsection with the following:

This work shall consist of furnishing and installing wire and cable of the type and size indicated for traffic signals and other traffic control devices, ITS systems, highway lighting and related electrical systems, equipment grounding systems, new ground electrodes or connections to existing ground electrodes, power pedestals, and all materials and equipment necessary to deliver power to such systems.

Service points shown on the plans are approximate only. The Contractor shall determine exact locations for both overhead and underground service access points. The Contractor shall determine riser elevations or connections/routing to manhole facilities from the serving utility, and arrange to complete the service connections.

All work under this Subsection shall comply with the MEC and the National Electrical Safety Code.

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Subsection 813.41: Grounding and Bonding Conductors Replace this subsection with the following:

Grounding and bonding conductors shall conform to M8.16.10: Type 10 Grounding and Bonding Conductors (Solid or Stranded, Insulated or Bare).

Subsection 813.42: Ground Rods Replace this subsection with the following:

Ground rods shall consist of driven rod(s) conforming to M8.17.0: Ground Rod or other devices approved for the purpose.

Subsection 813.44: Power Pedestal Add this subsection in numerical order:

A Power Pedestal shall consist of a side-of-post mounted lockable load center enclosure, a load center with circuit breakers, an exterior-mounted electrical meter, signal post and base, equipment bonding, ground rod(s) conforming to 813.42: Ground Rods, and a cement concrete foundation. The enclosure, lock, circuit breakers, signal post and base, and foundation shall all be included in the Shop Drawing submission.

The enclosure shall be rated to meet or exceed NEMA 3R and be suitable for post-mounting and shall be sized appropriately to house the load center. The enclosure shall be capable of being secured with an integrated locking mechanism or by a Contractor-supplied padlock; regardless of locking mechanism, it shall be operated with a #2 key.

The circuit breakers shall be designed for single-phase, 3-wire, 120/240 VAC. Circuit breakers shall provide a means to manually operate a circuit and/or automatically open a circuit that is in overload or short circuit conditions. All circuit breakers shall be UL listed and have CSA certification.

The enclosure shall be furnished with a meter socket installed. The meter socket shall be approved by the servicing electrical utility.

The signal post and base shall conform to M10.05.1: Signal Posts and Bases and the Plans. The Contractor shall supply a square aluminum base with a natural or anodized finish and a Schedule 80 aluminum post with a brushed or spun finish, unless otherwise indicated in the Plans.

The Contractor shall supply mounting equipment recommended by the enclosure manufacturer to side-mount the cabinet to the post.

Bonding for the Power Pedestal shall utilize a #8 AWG or larger ASTM-B3 wire.

The cement concrete foundation shall conform to the Plans and M4.02.0: Concrete Produced by Stationary and Truck Mixers, M4.03.0: Concrete Produced by Volumetric Mixers, M4.06.1: Conventional Concrete, M4.09.0:

Precast, Prestressed, and Prefabricated Concrete Products, M4.11.0: Evaporation Reducing Materials, and M4.12.0: Curing Materials, as applicable.

Subsection 813.64: Power Pedestal Add this subsection in numerical order:

No work shall commence until Shop Drawings have been approved.

The Power Pedestal Cabinet shall be mounted side-of-post to the Signal Post, per the manufacturer's recommendations. The Power Pedestal Cabinet should be installed directly below the meter socket, per the Plans. If dissimilar metals are present, they shall be electrically insulated to prevent galvanic corrosion.

The Contractor shall supply the appropriate type (single pole or double pole) and number of circuit breakers included within the Power Pedestal Cabinet to provide the recommended AC power to each device receiving power from the Cabinet. The circuit breakers shall be clearly labeled as to which device they are powering (e.g.

RRFB-1, RRFB-2, Warning Beacon, Speed Feedback Sign, etc.).

The Power Pedestal shall be grounded and bonded per 813.61: Equipment Grounding and Bonding and 813.62:

Grounding Electrodes.

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Subsection 813.80.E: Power Pedestal Add this subsection in numerical order:

Power Pedestals will be measured by the number of Power Pedestals furnished and installed.

Subsection 813.81.E: Power Pedestal Add this subsection in numerical order:

Power Pedestals will be paid for at the contract unit price per each installed in place. This includes all labor and materials required for a working system.

All costs associated with grounding and bonding of Power Pedestals shall be considered incidental to the item.

All costs associated with providing service connections to Power Pedestals shall be paid for under their respective pay items.

Subsection 813.82: Payment Items Change the unit of measure for items 813.80 and 813.81 to Each and add the following pay item:

813.90 Power Pedestal Each

Subsection 815.82: Payment Items

SUBSECTION 815: TRAFFIC SIGNALS

Subsection 815.20: General Replace the first sentence of the 11th paragraph with the following;

Within 30 days after Notice to Proceed, the Contractor shall submit to the Engineer for approval, a list of equipment they propose to install.

SUBSECTION 819: TRAFFIC SIGNAL DETECTION

Subsection 819: Traffic Signal Detection Add this subsection:

DESCRIPTION

819.20: General

The work under this Subsection consists of furnishing and installing detection devices for vehicles, bicycles, pedestrians, and other road users.

MATERIALS

819.40: General

Materials shall meet the requirements specified in the following Subsections of Division III, Materials:

Material Section

Vehicle Detection Systems M10.08.0

Passive Stop Line Detectors M10.08.1

Passive Advanced Detectors M10.08.2

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Pedestrian Detectors M10.09.0

Pedestrian Pushbutton Assembly M10.09.1

APS Pushbutton Assembly M10.09.2

The Contractor shall furnish Vehicle Detection Systems (VDS) and Pedestrian Detectors that are listed on the

QTCE.

Any software, firmware, cables, or adapters required to program, adjust, fine-tune, or monitor VDS or Pedestrian Detectors shall be provided by the Contractor. VDS and Pedestrian Detectors shall have the latest versions of software and/or firmware installed prior to inspection. Manufacturer updates to software and/or firmware shall be included at no cost for the life of the products.

819.40.A: Vehicle Detection Systems

A VDS shall consist of one or more Internet Protocol (IP) -based detector/sensor assemblies and a cabinet interface device that is installed in a Traffic Signal Controller Cabinet or similar device.

Stop Line VDS shall be capable of providing motor vehicle and bicycle detection at all locations shown on the Plans. The Contractor may furnish a VDS that utilizes a single detector/sensor or multiple, as long as all stop line motor vehicle and bicycle detection zones are encompassed and the traffic signal or other device utilizing the detection can operate per the Plans. All Passive Stop Line Detectors required to provide stop line detection at an intersection shall be included in the cost of a single Stop Line Vehicle Detection System.

If the Contractor furnishes a Stop Line VDS that does not utilize an integrated video monitoring system, a separate video monitoring system per 819.41: Video Monitoring System shall be furnished and installed at no additional cost.

Advanced VDS shall be capable of providing motor vehicle detection on a single approach, at the location shown on the Plans. The Contractor Shall furnish Passive Advanced Detectors that utilize, and are compatible with, the same interface device installed in the Traffic Signal Controller Cabinet, or similar device, as the Stop Line VDS.

All VDSs shall be furnished with manufacturer-supplied mounting hardware.

If multiple VDSs over multiple locations are supplied under a single contract, all components furnished by the Contractor shall be of the same make and model.

819.40.B: Pedestrian Detectors

Pedestrian Pushbutton Assembly and Accessible Pedestrian Signal (APS) Pushbutton Assembly shall both include a pushbutton, sign, housing, manufacturer-specified mounting hardware, and wiring. The Contractor shall review the Contract Documents to determine if one or more in-cabinet control units are required to meet the pedestrian detector type and operational requirements. In-cabinet control units shall be considered incidental to the cost of the item.

The Contractor shall provide a pushbutton housing that conforms to the shape of the pole it is mounted to or shall furnish and install a manufacturer-supplied saddle to provide a flush, secure fit, at no additional cost.

An APS Pushbutton Assembly shall include a pedestrian pushbutton sign that conforms to the Plans. If the sign is not integral to the housing, separate mounting equipment shall be furnished and installed by the Contractor.

All costs associated with the sign and mounting equipment shall be considered incidental to the cost of the item.

819.41: Video Monitoring System

When required by 819.40.A: Vehicle Detection Systems, the Contractor shall furnish and install a Video Monitoring System. The Video Monitoring System shall consist of one or more IP-based 4K, 1080p, H.264 dome-type CCTV cameras; mounting hardware, including but not limited to: brackets, bands, straps, posts, plates, and pole mount adapters; power distribution and conditioning equipment including surge suppression; and all

00715 - 8 necessary cabling and wiring.

All equipment provided for the Video Monitoring System shall be commercial, off-the-shelf products. Custom equipment designed specifically for the Contract will not be accepted. All cabling and wiring shall be recommended by the manufacturer and rated for outdoor use. Any special wiring or connectors required by the manufacturer shall be identified in the Shop Drawings.

The Video Monitoring System shall conform to National Electrical Manufactures Association (NEMA) standards, Underwriters’ Laboratory (UL), and Military Standards (MIL), as applicable. All components of the Video Monitoring System shall be new and still under production by the manufacturer. Obsolete, no longer produced, and/or no longer supported components will not be accepted.

The Video Monitoring System shall be capable of operating in temperatures ranging from -29℉ to +165℉.

The camera shall meet or exceed the requirements found in Table 819.41-1:

Table 819.41‐1: Minimum Camera Requirements

Feature Requirement

Zoom Ratio The minimum zoom ratio shall be 30x Optical and 12x Digital

Camera Type The camera shall be an IP-type CCTV camera.

Auto Focus The camera shall include auto focus with a selection for manual override of auto focus.

Lens Aperture Ratio Typical: F/1.6 to F/4.7 (wide to telephoto)

On-Screen Direction The CCTV camera shall display on-screen azimuth indications.

Privacy Zones The CCTV camera shall be programmable to blank out up to 8, four-sided areas to electronically block portions of the camera’s field of view from being displayed. These privacy zones shall move and adjust sizing synchronously with camera movements and degree of lens zooming.

On-Screen Labels, Text and Titles

The CCTV camera shall display a minimum of 20 programmable characters for on-screen camera ID, preset position, sector, and alarm titles.

On-Screen Labels, Text and Title Positioning

The position of the on-screen text shall be adjustable to appear at selectable positions on the CCTV camera screen image.

Number of Pixels The camera shall provide a minimum of 1280H x 720V effective pixels. The camera shall be capable of being configured to operate at all standard lower resolutions down to 320H x 180V effective pixels.

Image Sensor Size The camera shall include an image sensor of 1/1.8 in., nominal.

Lens Focal Length The camera shall include a zoom lens of 4.3 mm to 129 mm, minimum focal length.

Color and Black & White Image Selection

The camera shall have Color and Black & White video image display modes incorporating both automatic and manual override image mode selection. The camera shall transition automatically to a Black & White mode (when in automatic mode) when the luminance level reaches a user predefined threshold. At all times the camera shall provide a full motion video output at 30 frames per second.

Image Stabilization The CCTV camera shall incorporate electronic image stabilization to reduce the effects of vibration and wind gusts on the displayed video image.

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Feature Requirement

Automatic Iris The camera shall include both automatic iris control and an override for manual iris adjustments.

Wide Dynamic Range The CCTV camera’s wide dynamic range shall be 120 dB.

CCTV Camera Optical Sensitivity

The camera’s sensitivity shall be sufficient to provide a clear, usable color video image display with a scene illumination of ≤ 0.1 lux at an aperture of F1.6, nominal.

Power Input The power input for the CCTV camera and dome shall be PoE+.

Alarms No alarm contacts shall be wired.

The Contractor shall mount the camera at a location that optimizes line-of-sight for all approaches. The view of each approach shall have a clear line of sight, free from obstructions from trees, overhead wires, buildings, and/or other obstructions. If the Contractor is unable to provide a clear line of sight for all approaches to the satisfaction of the Engineer, a second camera, including mounting hardware, cabling, and wiring, shall be furnished and installed on a different traffic signal structure at no additional cost.

The Contractor shall be responsible for the following items prior to installation:

Ensure that all components are assembled and factory-tested prior to delivery to the project site.

Fully configure the camera settings, including but not limited to: camera resolution, camera address, default settings, and pre-set and home positions, per the direction of the Engineer.

Coordinate with the Engineer to set the camera address number to provide unique identification that is compatible with the CCTV camera addressing schema utilized by the Department.

The Contractor shall deliver the camera(s) fully assembled to the project site.

The Contractor shall provide up to 3 hard copy sets of operating manuals, service manuals, and maintenance instructions for all components of the system. At the request of the Engineer, the number of copies may be reduced if the manuals are provided in .pdf file format.

819.42: Material Warranties

All components of Vehicle Detection Systems, including Video Monitoring Systems, and Pedestrian Detectors shall include a minimum two-year manufacturer’s replacement warranty that will commence upon acceptance by the Engineer. The warranty shall cover any manufacturing defects of the products.

Construction Methods

819.60: General

The Contractor shall use discretion in installing the detectors/sensors at locations that optimize the performance of the VDS and to eliminate false calls. The Contractor shall notify the Engineer if the size or location of the detection zones differs from what is shown in the Plans. At the direction of the Engineer, the Contractor will be required to readjust the location of the detection zones and/or modify the detection channels if false calls are observed or the traffic signal system is not operating per the Plans due to the performance of the VDS; this work shall be considered incidental to the cost of the item.

The Contractor shall use manufacturer-specified mounting hardware for all detectors/sensors. If mounted to mast arms or strain poles, any addition weight or wind loading from the detector/sensor shall be accounted for in the structural calculations.

The Contractor shall install the cabinet interface device in the traffic signal controller cabinet. The cabinet interface device shall be connected to the Field Monitoring Unit (FMU) or an ethernet switch in the traffic signal controller cabinet. All communication between devices shall be IP-based. Use of external communications that

00715 - 10 are not routed through the FMU is prohibited.

The Contractor shall furnish and install low voltage power cabling surge protection equipment required for all data and power lines associated with VDS, Video Monitoring Systems, and/or Pedestrian Detection Systems entering the traffic signal controller cabinet.

The Contractor shall install the manufacturer-specified cable between the detectors/sensors to the cabinet interface device in the traffic signal controller cabinet via traffic signal structures, conduit, and/or pullboxes.

This shall include all connectors, sealing tape, and incidental work to complete the connection(s). All equipment installation and wiring shall be installed in a neat and orderly manner and per the manufacturer’s specifications.

The VDS shall be powered through one of the power outlets available on the FMU. The VDS shall be capable of being powered down and remotely restarted through remote control of the power outlet on the FMU.

Under the supervision of the Engineer, the Contractor shall install the VDS software that allows visual confirmation of the detection zones on Department computers.

The Contractor shall install Pedestrian Detectors at the location(s) and mounting height shown on the Plans.

The Contractor shall mount and orient the APS Pushbutton Assembly in a manner so that the vibrotactile arrow is aligned parallel to the crosswalk.

Prior to acceptance, the Contractor shall furnish all passwords for Vehicle Detection Systems and Pedestrian Detectors to the Engineer. The use of default passwords is prohibited.

819.61: Programming APS Pushbuttons

Each APS Pushbutton shall have an audible walk indication during the associated walk interval. The duration of the audible walk indication shall match the duration of the walk interval unless the pedestrian signal is programmed to rest in walk. If programmed to rest in walk, the audible walk indication shall be limited to 7 seconds in length but may be recalled by a subsequent button press during the walk interval.

The APS Pushbutton locator tone and audible walk indication shall be programmed to broadcast at volume 5 dBA louder than ambient sound, except when audible beaconing is provided in response to an extended pushbutton press. The broadcast volume shall be programmed to not exceed 100 dBA at 3 ft. from the emitter, regardless of ambient noise conditions.

The locator tone shall have a duration of 0.15 seconds or less and shall repeat at 1-second intervals.

The locator tone shall be active during all signal intervals, except for the following conditions:

When the audible walk indication is being broadcast.

If the signal is programmed to rest in walk, the locator tone shall resume 7 seconds after the start of the walk interval.

The locator tone shall be disabled if the traffic control signal or pedestrian hybrid beacon is operating in an emergency or fault flashing mode.

The locator tone shall be active during the flashing yellow and alternating flashing red intervals of a pedestrian hybrid beacon phasing sequence.

Upon button press, the locator tone at that pushbutton shall be interrupted and a speech message of “Wait” shall be broadcast.

The normal status of the pilot light shall be dark. The pilot light shall illuminate upon button press and stay illuminated until the start of the walk interval, when it shall return to dark. If the associated pedestrian phase is set to pedestrian recall, the pilot light shall stay illuminated for all intervals except for the walk interval.

The audible walk indication shall an audible tone unless a speech message is called for in the Plans. The audible

00715 - 11 tone shall repeat at 8 to 10 ticks per second, in multiple frequencies, with the dominant component at 880 Hz.

If a speech message is used, the following shall apply:

For exclusive pedestrian phases, during the walk interval the speech message shall be: “walk sign is on for all crossings.” This message shall be broadcast a single instance.

*For concurrent pedestrian phases, during the walk interval the speech message shall be: “[STREET NAME]. Walk sign is on for [STREET NAME].” This message shall be broadcast a single instance.

If the signal is programmed to rest in walk, the concurrent pedestrian speech message shall be repeated upon each subsequent button press.

*Note: See Plans for Street Name information.

The vibrotactile arrow shall vibrate during the walk interval.

The Contractor shall include a fault relay that will default to placing a constant pedestrian call from any pushbutton assembly that fails to communicate back to the in-cabinet control unit.

The Contractor shall connect the in-cabinet control unit to the Field Monitoring Unit (FMU) via an open ethernet port.

819.62: VDS Testing and Evaluation

After the VDS is installed, but prior to acceptance, the Contractor shall conduct an evaluation of the system in the presence of the Engineer. The purpose of the evaluation is to certify the system is operating per the requirements of M10.08.0: Vehicle Detection Systems, M10.08.1: Passive Stop Line Detectors, and M10.08.2:

Passive Advanced Detectors, as applicable. The Contractor shall submit their testing and evaluation plan as a part of the Shop Drawing submittal.

The testing and evaluation shall take place for a minimum of 30 minutes under moderate live traffic conditions.

Testing shall not be conducted during inclement weather.

If the Engineer determines that the system does not meet the operational requirements, the Contractor will be required to adjust the location, orientation, and/or number of detector/sensors. The Contractor may also adjust the location of the detection zones at this time. Upon completion of this work, the system shall be reevaluated in the presence of the Engineer. This process shall be repeated until the operational requirements are met.

All costs associated with testing and evaluation of the VDS, including the repositioning or addition of new materials, shall be considered incidental to the item.

Compensation

819.80: Method of Measurement

Stop Line Vehicle Detection Systems will be measured by each system furnished and installed.

Advanced Vehicle Detection Systems will be measured by each system furnished and installed.

Pedestrian Pushbuttons and APS Pushbuttons will be measured by each pushbutton furnished and installed.

819.81: Basis of Payment

Stop Line Vehicle Detection Systems will be paid for each system installed at an intersection. For the purposes of this work, an intersection shall be defined as all roadway, path, and/or trail approaches controlled by a single traffic signal controller. Where a Video Monitoring System is required per 819.40: General, it shall be included in the cost of Item 819.840.

Advanced Vehicle Detection System will be paid for each system installed on an intersection approach.

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Pedestrian Pushbutton and APS Pushbutton will be paid for each pushbutton assembly installed. The pedestrian sign mounted directly above the pushbutton shall be considered incidental to the item.

The unit cost of each vehicle detection system or pushbutton item shall include all wiring, cabling, mounting hardware, software, firmware, video monitoring system (if required), testing, calibrating, Department Acceptance, training, and all other labor and materials required for the system(s) to operate per the Plans.

819.82: Payment Items

Item number Description Unit

819.840 Stop Line Vehicle Detection System Each

819.845 Advanced Vehicle Detection System Each

819.850 Pedestrian Pushbutton Each

819.855 APS Pushbutton Each

SUBSECTION 820: HIGHWAY LIGHTING

Subsection 820.20: General Replace the first sentence of the 8th paragraph with the following;

Within 30 days after Notice to Proceed, the Contractor shall submit to the Engineer for approval, a list of equipment they propose to install.

Subsection 850.25: Arrow Board Subsection 850.45: Arrow Board Subsection 850.65: Arrow Board Delete these subsections.

Subsection 850.80: Method of Measurement Delete the 7th paragraph beginning with “Arrow Board will be measured …”

Subsection 850.81: Basis of Payment Delete the 7th paragraph beginning with “Arrow Board will be paid for …”

Subsection 850.82: Payment Items

Subsection 856: Connected Work Zone Notification System and Associated Devices Add this new subsection.

DESCRIPTION

856.20: General

The Connected Work Zone Notification System (CWZNS) is a system of field devices that transmit real-time location-based data about work zones. CWZNS field device data is provided in a Work Zone Data Exchange (WZDx) Device Feed in accordance with the United States Department of Transportation (USDOT) WZDx Specification. The Device Feed is consumed by the MassDOT Work Zone Manager (WZM) application.

The Contractor shall be responsible for furnishing, installing, repositioning, operating, maintaining, and

00715 - 13 removing these CWZNS devices.

MATERIALS

856.40: General

Materials shall meet the requirements specified in the following Subsections of Division III, Materials:

Material Section

Connected Work Zone Notification System Devices M10.18.0

Location Marker M10.18.1

Connected Arrow Board M10.18.2

End Location Markers shall conform to M10.18.1: Location Marker and include power and communication status lights and an on/off switch.

856.41: Arrow Board

Arrow Boards shall consist of a matrix of yellow elements that may be illuminated in flashing or sequential patterns, on a non-reflective, black background. The light output from the Arrow Board shall meet the minimum legibility distance, per the MUTCD. The elements shall be capable of at least 50% dimming from full brilliance to avoid nighttime glare. Arrow Boards that are continuously operational in both daylight and nighttime conditions shall automatically adjust the light output based upon ambient light conditions.

The mounting height of the Arrow Board, when in operation, shall be per the Plans.

The minimum dimensions and number of elements for Arrow Boards shall be per Table 856.41-1.

Table 856.41‐1: Arrow Board Dimensions and Elements

Elements

856.060, 856.160 B 60 in. by 30 in. 13

856.096, 856.196 C 96 in. by 48 in. 15

Arrow Boards shall be capable of the following operating modes, per the MUTCD:

Four Corners Flashing Caution Alternating Diamond Caution Flashing Arrow (left or right) Sequential Chevron (left or right) Flashing Double Arrow

Arrow Boards that are categorized as “Connected Arrow Boards” (Items 856.160 and 856.196) shall meet the requirements of M10.18.2: Connected Arrow Board in addition to the requirements of an Arrow Board described in this Subsection.

856.42: Shop Drawings

Within 30 days of the Notice to Proceed, the Contractor shall submit to the Engineer for review and approval cut sheets for each model of CWZNS device to be used. The cut sheets shall document device specifications, including details of how the CWZNS device will communicate. Work that requires the use of CWZNS devices shall not commence until the submission has been approved.

CONSTRUCTION METHODS

856.60: General

At least 15 days prior to deploying CWZNS devices, the Contractor shall visit the site to verify cellular coverage.

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If the devices the Contractor plans to deploy do not have coverage, the Contractor shall swap out the cellular modem, SIM card, or both to a carrier that provides coverage. If no adequate cellular coverage exists from 4G LTE or 5G providers, the Contractor shall immediately notify the Engineer.

The Contractor shall install CWZNS devices at the locations shown on the Plans.

Per the WZDx Specification Device Feed, an End Location Marker shall have a single Marked Location with the “type” property as “work-zone-end”.

The Contractor shall install and power on the End Location Marker coinciding with the deployment of the temporary traffic control setup that calls for its use. The Contractor shall power down and remove the Location Marker at the conclusion of the removal of the temporary traffic control setup. If the location of the work moves during a work shift, the Contractor shall power down the Location Marker, relocate it, and then power it back on.

The operating mode for the Arrow Board or Connected Arrow Board shall be per the Plans. When activated, the minimum element on-time shall be 50% for the flashing mode, with equal intervals of 25% for each sequential phase. The flashing rate shall be not less than 25 or more than 40 flashes per minute.

If a Connected Arrow Board is being used to transmit its location without utilizing other arrow board functions, such as operating a Flashing Arrow, the arrow board shall remain dark and removed from the roadway or protected from approaching traffic while the data is being transmitted.

The Contractor shall be responsible for remediating any CWZNS device that is not operating as specified, at no additional cost to the Department.

CWZNS devices that are lost, stolen, vandalized, damaged, destroyed, or deemed unacceptable while their use is required on the project shall be replaced by the Contractor at no additional cost to the Department.

COMPENSATION

856.80: Method of Measurement

Arrow Boards and Connected Arrow Boards will be measured by the Day. Each period of up to 24 hours during which an Arrow Board or Connected Arrow Board is in use will be measured as one day, regardless of the number of times that the unit is positioned, repositioned, removed, or returned to service.

End Location Markers will be measured by the Day. Each period of up to 24 hours during which a End Location Marker is in use will be measured as one day, regardless of the number of times that the unit is positioned, repositioned, removed, or returned to service.

856.81: Basis of Payment

Arrow Boards and Connected Arrow Boards will be paid for at the contract unit price per day, which shall include full compensation for labor and materials, positioning, repositioning, and removing or returning to service.

End Location Markers will be paid for at the contract unit price per day which shall include full compensation for labor and materials, positioning, repositioning, and removing or returning to service.

If an End Location Marker is attached to another traffic control device that is not otherwise called for in the Plans or Specifications, that ancillary device shall be considered incidental to the cost of the End Location Marker.

Licenses, fees, communication costs, power costs, and access to real-time and recorded data associated with the Device Feed for CWZNS devices shall be considered incidental to the cost of the item.

The Department will not pay for CWZNS devices that fail to operate as specified.

856.82: Payment Items

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Item number Description Unit

856.060 Arrow Board (Type B) Day

856.096 Arrow Board (Type C) Day

856.160 Connected Arrow Board (Type B) Day

856.196 Connected Arrow Board (Type C) Day

856.201 End Location Marker Day

SECTION 900: STRUCTURES

SUBSECTION 901: CEMENT CONCRETE

Subsection 901.20: Materials

Preformed Expansion Joint Filler M9.14.0

SUBSECTION 983: REVETMENT

Subsection 983.40: General Delete Preformed Bituminous Fiber Joint Filler – M3.05.3 and add the following in M number sequence:

Preformed Expansion Joint Filler M9.14.0

SUBSECTION 996: NOISE BARRIER

Subsection 996.60: General Replace the fourth paragraph with the following:

The Contractor shall submit an erection procedure in accordance with 960.67.A: Erection.

DIVISION III

MATERIALS SPECIFICATIONS

SECTION M3: ASPHALTIC MATERIALS

Subsection M3.05.5: Preformed Bituminous Joint Filler for Concrete Delete this subsection.

SECTION M9: MISCELLANEOUS MATERIALS

Subsection M9.07.0: Plastic Waterstops Replace this subsection with the following:

M9.07.0.A: Scope

This specification pertains to Polyvinyl chloride (PVC) Waterstops.

M9.07.0.B General Requirements

Waterstops shall be fabricated from a plastic compound, the basic resin of which shall be polyvinyl chloride.

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The compound shall contain any additional resins, plasticizers, inhibitors or other materials such that when compounded it shall meet the performance requirements hereinafter specified. No reclaimed polyvinyl chloride shall be used.

Waterstops shall be extruded in such a manner that any cross section shall be dense, homogenous and free from porosity or other imperfections. The cross section of waterstops shall be as shown on the Plans.

The waterstops shall be spliced only at jointing made necessary by construction design. Where joints are required, they shall be made in accordance with the manufacturer’s instructions, without appreciable loss in strength, elasticity or permeability of the material.

The waterstop material shall not engage in electrolytic action with steel, shall be resistant to mineral oils, and shall not discolor concrete.

The approved waterstop when properly installed, as in a concrete construction or expansion joint, shall be capable of maintaining a head of 75 ft of water without leakage.

M9.07.0.C: Material Requirements

The waterstops shall meet the following requirements:

Description Requirement

Tensile Strength, Type IV, ASTM D638 Minimum 2,000 psi Ultimate Elongation, Type IV, ASTM D638 Minimum 350%

Tear Resistance, ASTM D624 Minimum 300 lb/in

Low Temperature Brittleness, ASTM D746 No Failure at -35°F

Resistance to Alkalis, after 7 days

Weight Change CRD-C572 -0.10% to 0.25%

Hardness Change, CRD-C572/ASTM D2240 Maximum ±5 points

Hardness Durometer (Shore A) ASTM D2240 75 to 85 points

Water Absorption (48 hr) ASTM D570 Maximum 0.15% (by mass)

Specific Gravity, ASTM D792 Maximum 1.40

M9.07.0.D: Qualification Samples

A manufacturer requesting approval of a waterstop shall furnish to Research and Materials two (2) 6”x6” plaques per lot prepared in accordance with ASTM D3182 or a 3-ft length of each lot of waterstop they intend to supply. A Certificate of Analysis (COA) shall be furnished with the samples showing test results by an Independent Testing Laboratory and subsequently qualified Quality Control (QC) test results. The QC testing laboratory shall be qualified in accordance with AASHTO R 38. The submitted COA shall state that the material furnished conforms without exception to all the requirements specified herein; and it shall also include all qualitative and quantitative test results.

Subsection M9.14.0: Preformed Expansion Joint Filler Replace this subsection with the following:

Preformed expansion joint filler for concrete applications and structural construction shall meet the requirements specified herein. The Contractor shall provide certified test data which documents compliance with the required physical properties. The certified test data shall be submitted to the Engineer for approval.

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Table M9.14.0‐1: Types of Preformed Expansion Joint Filler

Speciϐication Type and Description

AASHTO M 153

Type I – Sponge Rubber Type II – Cork Type III – Self-Expanding Cork Type IV – Polyurethane-Bonded Recycled Rubber

AASHTO M 213

Type I – Asphalt-Saturated Cellulosic Fiber Type II – Asphalt Binder-Cork with Asphalt-Saturated or Glass Fiber Felt Type III – Polyurethane-Bonded Recycled Rubber

ASTM D1752

Type IV – Recycled PVC

ASTM D7174

Type I – Closed-Cell Polyethylene or Blended Polyethylene Foam

ASTM D8139

Type I – Closed-Cell Polypropylene Foam

Subsection M9.14.2: Closed Cell Foam Joint Filler Delete this subsection:

SECTION M10: TRAFFIC CONTROL DEVICES

Subsection M10.03.1: Field Monitoring Unit Add this new subsection:

M10.03.1: Field Monitoring Unit

All Field Monitoring Units (FMU) shall be compatible with the MassDOT Critical Operations Multi-jurisdictional Modular System (MCOMMS), cloud-based management system.

FMUs shall be capable of operating independently from the brand of traffic signal controller, vehicle and pedestrian detection systems, battery backup system (BBS), and any other Ethernet-based, web accessible device present in the traffic signal controller cabinet.

M10.03.1.A: Hardware

The FMU shall communicate via an Ethernet port with an RJ45 connector and have an integrated Ethernet switch with a minimum of four ports.

The FMU shall be powered via standard 120 VAC input power. The FMU shall include an integrated battery and battery charging/monitoring circuit that will allow the FMU to fully function even if all other electrical service to the cabinet has been interrupted. The battery shall continue to supply the FMU with power for a minimum of 5 hours on a single charge.

The FMU shall have an integrated GPS that will allow for automated telemetry without additional configuration.

The GPS shall be capable of providing a time sync pulse to the internal clock of a connected traffic signal controller. The FMU shall utilize the integrated GPS to geolocate itself on a map via the FMU management software.

M10.03.1.B: Software

The configuration of the FMU shall be accomplished by accessing FMU management software via an internet browser. It shall be possible to configure the FMU without any special software.

The FMU shall operate without requiring a static IP address. The only configuration required at the FMU is to enter the URL to the host of the FMU management software.

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The FMU shall utilize HTTPS protocols and XML data structure for communications with the FMU management software. The data shall be scalable for future expansion; proprietary protocols shall not be used.

M10.03.1.C: Wireless Connectivity

The FMU shall be supplied with an internal 4G LTE cellular modem.

The modem shall support future upgrades to 5G service, when available, and shall be compatible with SIM cards from multiple cellular carriers.

M10.03.1.D: Remote Access

Remote access to any traffic signal cabinet component that has a web interface via the FMU shall not require the end user to create a separate Virtual Private Network (VPN) connection.

Subsection M10.08.0: Vehicle Detection Systems Subsection M10.08.1: Passive Stop Line Detectors Subsection M10.08.2: Passive Advanced Detectors Add theses new subsections:

M10.08.0: Vehicle Detection Systems

Vehicle Detection Systems (VDS) shall be capable of detecting the presence of all motor vehicle types and bicycles in designated areas and sending corresponding detector outputs to a traffic signal controller.

All in-cabinet components of VDS shall be compatible with the following standards:

• ATCC 5301 v02

• ATC 5201 v06

• NEMA TS2 environmental standards

Through an ethernet-based connection to the detection module and/or cabinet interface device in the field or through the internal network of the traffic signal controller cabinet, the VDS shall support remote management of motor vehicle and bicycle detection configurations and access to data including:

• The number, location, and size of detection zones.

• Configuration of the detector channel and assigned phase for each zone.

• Configuration of detection zones for signal performance measurement data collection.

• The ability to add and remove users.

• Signal performance data:

o Monitoring and recording the status of the phase and detector channels…