Eckert Road Bridges 2147 and 2148 – Boise River and Ridenbaugh Canal, Eckert Road and Boise Avenue Roundabout

SPECIAL PROVISIONS

Eckert Road over Boise River and Ridenbaugh Canal

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SPECIAL PROVISIONS

BRIDGE KEY NO. 12811 & 12806

Eckert Road over Boise River and Ridenbaugh Canal Ada County

This project will remove the existing nine-span girder bridge for Eckert Road over the Boise River and replace it with a three-span 364-foot prestressed concrete girder bridge. It will also remove the existing two-span girder bridge for Eckert Road over the Ridenbaugh Canal and replace it with a single span 91-foot prestressed concrete girder bridge. Eckert Road will be realigned and reconstructed to three lanes with curb and gutter, a multi-use pathway, and a concrete stiff leg culvert under Eckert Road to connect the existing and future Greenbelt and the Dallas Harris Legacy Walkway and update the Barber Park driveway access.

The following special provisions and all addenda issued supplement or modify the 2023 Idaho Transportation Department Standard Specifications for Highway Construction: 2025 Supplemental Specifications for the Idaho Transportation Department 2023 Standard Specifications for Highway Construction, 2023 Quality Assurance Special Provision for State Acceptance (12/07/2023), 2025 Special Provision for 405 Superpave Hot Mix Asphalt (11/17/2025), 2025 Standard Drawings and Special Provision-State-Aid (SP-SA), Ada County Highway District Policy Manual Section 8200 – ACHD Approved Stormwater Design tools and Approved BMPs, Ada County Highway District Division 1130 – General Conditions, Ada County Highway District Division 1131 – Illumination, Traffic Signal Systems and Electrical Supplemental Provisions, Ada County Highway District Division 1135 – Roadside Traffic Signs Supplemental Provisions, Ada County Highway District 2017 Supplement to the 2017 ISPWC, December 2017, Idaho Standards for Public Works Construction – 2017 Edition, LILB Minimum Testing Requirements.

SOURCE IDENTIFICATION

Designated source(s). Designated source(s) are not identified for this contract/project.

Contractor provided source(s). Provide approved source(s) for all materials. A list of Department owned, or controlled sources is available at the District office.

CONTRACT TIME

The Contract establishes a Contract Time beginning with the Construction Notice to Proceed of October 1, 2026 and ending on June 21, 2028 which represents the planned completion of all bridge, roadway, and roundabout improvements.

The contractor shall maintain access to Barber Park in accordance with Eckert Road Bridge Roadway Plan Sheets 94– 104.

The contractor shall not have access to a portion of parcel 6 as shown in the attached sketch until April 30, 2027, or as granted earlier by NMID.

The contractor will be allowed to close the intersection at Boise Avenue and Eckert Road for purposes of constructing the roundabout, the allowable closure is 64 Calendar days.

No Extension of Contract Time will be granted for:

• Weather conditions; Utility conflicts or utility relocation delays;

• Material Procurement or fabrication delays;

• Labor Shortages;

• Activities outside of contractors critical path;

• Equipment Availability;

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• Delays attributable to contractor, subcontractor, or suppliers performance;

• Any other delay reasonably foreseeable by the Contractor

Contract Time extensions will only be granted through a written change order.

LIQUIDATED DAMAGES

The amount of liquidated damages for failure to complete the work on time will be $12,000 per day.

Liquidated damages provision does not waive the Department’s right to seek other remedies for a breach of contract by the awarded Contractor.

CONTRACTOR NOTES

ACHD

All references to “the Department” in the Standard Specifications for Highway Construction (SSHC), will be interpreted as Ada County Highway District (ACHD). The Engineer of the Department acts directly or through the Resident Engineer and is an authorized representative of the Department having general supervision over construction and maintenance work in the Department.

ACHD OWNED CONDUIT IMPACTS

ACHD-owned conduit may be shallow and located directly behind the curb or under the sidewalk. The Contractor’s method of sidewalk and/or curb removal must be done in a manner to avoid damage to conduit and fiber. Any damage must be repaired at the Contractor’s expense.

AMERICANS WITH DISABILITY ACCESS (ADA) DURING CONSTRUCTION

The needs and control of all road users (motorists, bicyclists, and pedestrians within the highway and/or public right-of-way, including persons with disabilities in accordance with the Americans with Disabilities Act of 1990 (ADA), Title II, Paragraph 35.130) through a temporary traffic control “TTC” zone is an essential part of highway construction, utility work, maintenance operations, and the management of traffic incidents. The primary function of TTC is to provide for the reasonably safe and efficient movement of road users through or around TTC zones while reasonably protecting workers, responders to traffic incidents, and equipment.

Temporary facilities, including reasonably safe pedestrian routes around work sites, are also covered by the accessibility requirements of the Americans with Disabilities Act of 1990 (ADA) (Public Law 101-336, 104 Stat.327, July 26, 1990. 42 USC 12101-12213 (as amended)). Implementation of TTC plans and installation and maintenance of devices is the responsibility of the contractor performing the construction, alteration and/or maintenance of the highway or public right-of-way. Meet the accessibility requirements (Standards) set forth in Part 6 of the MUTCD for temporary traffic control for pedestrians. When an existing continuous sidewalk or street crossing route cannot be maintained for pedestrians because of construction, provide either temporary walkways with curb ramps, or phase the construction to maintain access to the affected addresses. Contractors are allowed flexibility as long as the requirements are met.

The location of the construction project and whether or not accessible facilities are present shall also determine the extent of the needed temporary facilities. Maintain practical continuity where accessible facilities already exist. On low-speed rural roads that do not have sidewalks and are used by bicyclists, no additional measures are needed as the bicycles can share the available travel lanes with other traffic. On moderate to higher speed rural roads, if a bike lane exists then it should be properly detoured, complete with signage, to provide a safe route through or around the work area. If a road or bridge project affects vehicular

BRIDGE KEY NO. 12811 & 12806 Page 3 of 84 traffic to a business, residence, school or any other type of pedestrian generating location with existing accessible facilities, then pedestrian and accessible access must be maintained.

Maintain a continuous route for all pedestrians, including the disabled and bicyclists, at all times. When existing pedestrian facilities are disrupted, closed, or relocated in a TTC zone, provide temporary facilities that are detectable and include accessibility features consistent with the features present in the existing pedestrian facility. The temporary route should enable pedestrians to bypass the construction site while minimizing the retracing of their steps or going significantly out of their way. Additional consideration must be given to the disabled since they may not have the physical or cognitive ability to improvise (e.g. balancing along the curb or a very narrow path) or use unofficial alternatives (e.g. using an adjacent grass surface).

Temporary routes must meet the accessibility guidelines of the ADA for permanent facilities and must be marked with the proper signage. Should existing crosswalks at signalized intersections be closed or made inaccessible, temporary crosswalks should be painted in an accessible location. Temporary signals should include pedestrian phases.

Do not block temporary walkways with contractor parking, materials piles, signs, rubble or rubbish.

Construction equipment and equipment operation must be separated from the temporary walkways. At work zones where higher volumes of pedestrian traffic or school children exist, pedestrian fences or other protective barriers may be needed to prevent access into the construction area.

Detour and diversion routes, when used for pedestrians and bicyclists, should be evaluated for the following items:

• Direct conflicts between pedestrians and vehicular traffic, work vehicles, and other work activities must be reduced with protective barriers or continuous high contrast fencing (min 36” high with a 6” high toe board). See MUTCD 6F.68 and 6D.02

• Temporary pedestrian facilities should provide safe, accessible routes that replicate as nearly as practical the most desirable characteristics of the existing facility and parallel the disrupted route whenever possible. A smooth, continuous hard surface should be provided throughout the entire length of the temporary pedestrian facility. There should be no curbs or abrupt changes in grade or terrain that could cause tripping or be a barrier to wheelchair use. The geometry and alignment of the facility should meet the applicable requirements of the Americans with Disabilities Act Accessibility Guidelines (ADAAG) for Buildings and Facilities. See MUTCD 6D.01 and 6D.02

• Advance information placed at appropriate distances before the work zone allowing pedestrians to make timely decisions about routes through or around the work zone. See MUTCD 6F.14

• Transition information allowing pedestrians to find a safe path through and around work zones, which is critical when the pathway is restricted, diverted or detoured. See MUTCD 6F.14

• Work area information assisting in safe passage of pedestrians through the work zone. This information is needed on all pedestrian routes except detours. See MUTCD 6F.14

• Exit information directing pedestrians back to the original route. See MUTCD 6F.14

• Crosswalk placement at intersections may need additional signage, temporary striping, traffic signal modification, pedestrian signals with audible alarms if justified, proper push button height, and ramps. See MUTCD 6H.29, 6F.80, and 4E.06

• Accommodation for other transit forms (busses, trains etc.) are made. See MUTCD 6D.02

• Requirements of the ADAAG, PROWAG, and MUTCD are adhered to.

• Access is maintained to the affected businesses and residences.

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ASPHALT AND CONCRETE CUTTING

Complete asphalt pavement and concrete cutting incidental to item 205-005A Excavation. Ensure that cuts made in asphalt and concrete for trenches are parallel and do not wander or diverge from the intended line.

Collect dust produced by asphalt or concrete saw cuts using a high-powered vacuum dust control system, eliminating the dust from entering the atmosphere. Attach the suction device to the cutting equipment or positioned to make sure a maximum amount of dust will be collected before it can be released into the atmosphere. The cost to ensure dust is collected during asphalt and concrete cutting is considered incidental to the cost of the project and no additional compensation will be made.

CONFLICTING PAVEMENT MARKINGS

Completely obliterate all conflicting pavement markings using an ACHD approved method prior to applying permanent pavement markings. The cost of performing all obliteration is considered incidental to other items and no separate pay item will be included for obliteration of pavement markings.

CONNECTING PIPES

Connecting new pipes, manholes, irrigation structures\ditches and catch basins to existing pipes, manholes, irrigation structures\ditches and catch basins is incidental to other work. No additional compensation will be made.

Verify invert elevations for all pipe replacements to existing structures that are to remain in place.

CONSERVATION EASEMENTS

The Land Trust of the Treasure Valley (LTTV) are the open space steward of a fish habitat conservation easement that encompasses Alta Harris Creek, which runs along the right-hand side of the Boise River, east of Eckert Road in the project area. The Ted Trueblood Chapter of Trout Unlimited are the watercourse steward of the fish habitat conservation easement to which LTTV is the open space steward.

The Idaho Foundation for Parks and Lands are the holders of two conservation easements within the project area. The first easement covers a portion of the Dallas Harris Boise River Walk, lying east of Eckert Road and in between the ordinary high water mark line of the right bank of the Boise River and the LTTV/Trout Unlimited easement. The second easement is the Harris Ranch Wetlands which runs along the right-hand side of the Boise River west of Eckert Road, which is a wetland bank site that was formed due to the wetland impacts that resulted from the construction of East Parkcenter Bridge.

No disturbance of these conservation easement areas is allowed and they should be protected and avoided in all work stages unless noted otherwise on the plans or directed by the Engineer. Delineate the boundaries of these easements with appropriate fencing, staking, or other means necessary prior to starting any construction activities. The conservation easements are delineated in the Stormwater Pollution Prevention Plan (SWPPP).

CONSTRUCTION STAGING AND WORK SEQUENCING

Furnish ACHD with a detailed construction staging plan based on the anticipated approach to construction activities. This plan and implementation will be the responsibility of the Contractor. Final approval of the staging plans and revisions thereof must be granted by ACHD prior to implementation.

Staging and work sequencing plans that may be contained within the project plans are primarily for bidding purposes only. Utilize any staging plans contained within the bid documents as a basis for staging, but the final staging plan will be provided by the contractor prior to construction activities.

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The cost associated with providing the necessary staging plans and work sequencing will be considered incidental to the project and no additional compensation will be made.

CONSULTANT CONFLICT OF INTEREST

The Consultant and sub-consultants, as the designers of this project, agree that no one in their firms will perform any services for the Contractor on the construction of this project.

The following Consultants worked on the design of this project:

HDR Engineering, Inc.

Burgess & Niple, Inc.

Terracon

Civil Survey Consultants, Inc.

Horrocks

AECOM

CULTURAL MATERIALS

Proposed improvements will not occur on or impact any known tribal lands. However, in the event that cultural materials are encountered during ground-disturbing activities, all work must cease, and ACHD Environmental Staff must be immediately notified.

DAMAGED AREAS BEYOND SPECIFIED CONSTRUCTION LIMITS

Promptly repair damage to any areas or items not specifically identified for removal, including the existing pavement, sod, sprinklers and landscaping in the contract documents. The cost to complete such repairs is considered incidental to the cost of the project and no additional compensation will be made.

DEWATERING

Before initiating work at or below the ordinary high-water mark, submit a dewatering plan to be reviewed and accepted by the Engineer and IDWR approval. Allow four weeks for review. The plan will detail dewatering Best Management Practices to be employed and implemented during construction. The plan should also detail how collected water removed from the project area via dewatering will meet State of Idaho Water Quality standards prior to discharging.

The contractor shall coordinate with IDFAG to ensure BMP’s for fish salvage are included in the plan.

Brandon Flack Regional Technical Assistance Manager Idaho Dept. of Fish and Game Southwest Region 15950 N. Gate Blvd.

Nampa, ID 83687 Ph: (208) 854-8947

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ELECTRICAL WORK 01/18

This contract contains work for which the Department believes a licensed electrical firm will be required.

Complete the sheet provided for compliance with 67-2310 Idaho Code, or provide an explanation as to why an electrical license is not required. “N/A” is not an appropriate explanation.

EMPLOYMENT AGENCY 01/23

To find the nearest employment office, visit https://www.labor.idaho.gov/Local-Office-Directory.

ENVIRONMENTAL REQUIREMENT – 404 NATIONWIDE PERMIT 14 (NWP 14)

This project has 404 permit coverage under a US Army Corps of Engineers 404 Nationwide Permit 14 (NWP 14), the associated Idaho Department of Environmental Quality 401 Certification and Idaho Department of Water Resources (IDWR) Stream Channel Alteration Permit.

Perform work in conformance with requirements specified in the approved NWP 14:

1. Comply with all general and regional permit conditions for NWP No. 14: Linear Transportation Projects and Water Quality Certification, NWP 14. In addition, comply with the special conditions listed below.

a. Special Condition 1: Permit has been issued while Monarch Butterfly is proposed as "threatened" under the Endangered Species Act (ESA). Should the Monarch Butterfly be listed under the ESA prior to the completion of the project please contact the U.S. Army Corps of Engineers for an evaluation of effect determination.

b. Special Condition 2: Permit has been issued while Suckley's Cuckoo Bumble Bee is proposed as "endangered" under the Endangered Species Act (ESA). Should the Suckley's Cuckoo Bumble Bee be listed under the ESA prior to the completion of the project, please contact the U.S. Army Corps of Engineers for an evaluation of effect determination.

c. Special Condition 3: Cofferdam material shall be removed from the channel, upon completion of the project, and deposited in an upland location where it will not reenter a water of the United States.

d. Special Condition 4: The permittee is responsible for all work done by any contractor or agent. The permittee shall ensure any contractor who performs the work is informed of and follows all the terms and conditions of this authorization.

Perform work in conformance with requirements specified in the approved Stream Channel Alteration Permit:

1. All construction shall be completed in accordance with the descriptions and methods on the NWP 3 application and diagrams unless otherwise specified. IDWR must approve any changes prior to construction.

2. All construction activities shall take place during low flow to minimize turbidity, protect water quality, and comply with Idaho water quality standards. Equipment shall not enter the live stream channel.

3. No uncured concrete shall come into contact with Boise River surface water.

4. A final dewatering plan, including diagrams, shall be submitted to IDWR for approval at least four (4) weeks prior to any construction below the Ordinary High-Water Mark. The dewatering plan shall specify a maximum flow rate cubic feet per second (cfs) of the Boise River at which dewatering measures will be in place.

5. Care shall be taken to select locations for ingress and egress to the project site that will minimize bank and riparian vegetation damage. Damaged areas shall be replanted with native vegetation at no additional project cost.

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6. Silt fencing or other erosion/sediment control measures shall be installed between any area of earth disturbance and the water. Erosion and sediment control measures shall be installed according to the manufacturer’s specifications, during construction, and must be maintained until construction is completed and the disturbed ground is revegetated and stable.

7. All temporary structures, excess excavated material, and vegetative or construction debris shall be disposed of out of the stream channel where it cannot reenter the channel. All construction debris shall be removed from the site and disposed of properly.

8. All fuel, oil, and other hazardous materials shall be stored and equipment refueled away from the stream channel to ensure that a spill will not enter the waterway. Equipment must be free of fuel and lubricant leaks. The operator shall have spill control materials on-site and available at all times during this project. In the event of a release greater than twenty‑five (25) gallons of fuel or oil to the ground or to surface waters, the Idaho State Communications Center shall be contacted at 1‑800‑632‑8000.

9. Permittee is responsible for all work done by any contractor or sub‑contractor and shall ensure any contractor who performs the work is informed of and follows all the terms and conditions of this authorization.

Contractor must contact IDWR Stream Channel Protection Specialist no later than three (3) business days prior to construction and no later than fourteen (14) days after project completion.

IDWR Stream Channel Protection Specialist

Katie Gibble

(208) 287-4823 katie.gibble@idwr.idaho.gov

Construction activities must comply with Idaho water quality standards. Any turbidity monitoring required by the 401 certification is the Contractor’s responsibility and incidental to the contract.

Penalties and Damages

Fines, penalties, and costs to the Department for the Contractor’s failure to comply with the Clean Water Act, to mitigate environmental damage, or to resolve regulatory actions will be deducted from moneys due the Contractor.

ENVIRONMENTAL REQUIREMENT – WETLAND PROTECTION

Wetlands are present within the project area. Non-compliance with the Clean Water Act may result in enforcement action by federal regulatory agencies. Disturbances to wetland areas not specifically designated in project permits is strictly prohibited. Discharge of pollutants (including sediments) to the wetland or adjacent riparian area is strictly prohibited.

ESTIMATING BASIS

The unit weights in the estimating basis are provided to assist the designer in developing reasonable project quantities. The actual quantities will vary depending on contractor-provided source, crushing operations, and mix designs. The Contractor is responsible for determining actual unit weights based on the material produced and providing adequate materials for the project, plus any losses to stockpile operations, out of specification (rejected) materials, or other wastes.

The unit weights shown below were determined from area history and past project experience. This information was used to determine Plan quantities.

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• Superpave HMA Class SP-3 & SP-5 with ½” nominal maximum aggregate size per ITD Standard Specifications, Section 703.05 and PG 70-28 binder at 5.5% by weight with 0.5% anti-strip additive by weight of asphalt cement

• ½” Aggregate for Superpave HMA Class SP-3 & SP-5 at 144 lbs/CF (compacted), including asphalt and additives

• CSS-1 Diluted Emulsified Asphalt for Tack Coat at 0.10 GAL/SY between lifts and 0.20 GAL/SY on vertical faces

• Water for Dust Abatement at 0.5 GAL/SY of subgrade per application

• The estimated unit weight of ¾-inch Type-B Aggregate for Untreated Base and Special Aggregate

(4” Path Base) is 143 lbs/CF (compacted), including 7 percent moisture.

• The estimated unit weight of Special Aggregate (Landscape Buffer Rock) is 143 lbs/CF

(uncompacted).

• The estimated unit weight of Granular Subbase is 135 lbs/CF (compacted), including 4 percent moisture.

EXCESS SITE MATERIAL

Provide a site for the disposal of excess or unsuitable materials. If bituminous material is to be disposed of, the site must meet the requirements of the Idaho Department of Environmental Quality. All excess material sites must be approved by ACHD. No separate payment will be made for the acquisition or operation of the sites, or for loading, hauling or unloading the materials at the site.

FIBER OPTIC NETWORK

Interruption of ACHD's fiber optic network shall only be permitted as weekend work. Disrupt no earlier than Friday at 10pm and return to service no later than on Monday at 5am. Provide a minimum of two (2) weeks’ notice prior to the start of any work that may impact ACHD's network for review. Depending on the impact to the District or partnering agencies, ACHD reserves the right to modify the requested dates for the scheduled outage. Contact Brian Froberg at (208) 941-9132 for Brian Thies at (208) 484-3926 to schedule work.

GEOTECHNICAL INFORMATION

Geotechnical Engineering Evaluation Reports have been prepared by Terracon for the project and are available from ACHD. The Contractor is required to review the findings of the subsurface exploration presented in the reports.

The Contractor will assume all costs for obtaining approvals and materials meeting the requirements for this project.

GRANULAR BORROW

Granular Borrow to be imported only when suitable excavated material is not available for embankments.

The use of import must be approved by the Engineer prior to placement.

HMA – SMALL QUANTITIES

The Department does not require acceptance test strips on small quantity pavement (e.g. less than 2250 tons), nonstructural pavement, or temporary pavement. Submit HMA mix desigs regardless of project pavement quantity for approval. The Contractor is responsible for quality control testing.

HMA PAVEMENT

The Contractor is informed that SuperPave HMA placement may not be possible through the required Completion Date of this contract due to inclement weather. The requirements outlined in ITD Specification Section 405 will not be waived or relaxed as a result of late season paving and impacts due to weather. If the

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Contractors operations take SuperPave placement into out of specification paving weather, a temporary pavement will be placed at a depth of no less than 0.15’ until weather allows in the spring to place the SuperPave surface within specification required conditions at no additional cost to the project. Placement, removal, traffic control, and any rework required as a result of the use of Temporary Pavement will be the responsibility of the Contractor and will be considered incidental to the project 405 item.

IDAHO IMPLEMENTATION OF AASHTO MANUAL FOR ASSESSING SAFETY HARDWARE, 2ND

EDITION (2016)

The following safety hardware must meet AASHTO 2016 MASH criteria, ITD’s Standard Drawings, and if the hardware is a proprietary product, it must be approved on ITD’s Qualified Product List (QPL) for new permanent installations and full replacements:

• W-beam

• Cast-in-place concrete barriers

• W-beam tangent terminals and buried-in-backslope terminals

• W-beam flared terminals and terminals installed on a flare

• Crash cushions

• Transitions

• Permanently installed portable barriers

• Bridge rails

• Cable barriers

• Cable barrier terminals

The following safety hardware may be MASH 2009/2016 or NCHRP 350 compliant for new permanent installations and full replacements:

• Double-sided or median terminals

• Sign supports

• All other breakaway hardware

For projects utilizing December 2018 Standard Drawings release or earlier, replace the 612 series sheets with the 612 series from the latest Standard Drawings release.

Temporary work zone devices (including portable barriers, truck- and trailer-mounted attenuators, portable changeable message signs (PCMS), temporary traffic signals, and camera trailers) manufactured after December 31, 2019, must have been successfully tested to the 2016 edition of MASH. Such devices manufactured on or before this date and successfully tested to NCHRP Report 350 or the 2009 edition of MASH, may continue to be used throughout their normal service lives.

INFORMATION GIVEN PRIOR TO AWARD

Oral explanations, instructions and interpretations given to bidders prior to award of contract will not be binding. It is the ACHD’s intent to provide all bidders equal opportunity to access and acquire all available pertinent information necessary to formulate a responsive bid. Any information, specifications, plans, data, or interpretations that ACHD discovers is lacking and may be important to all bidders will be furnished in the form of an addenda, the receipt of which shall be acknowledged by the bidder.

LEAD BASED PAINT

The existing bridge has not been sampled or tested for lead. Lead based or lead containing paint/materials are assumed to be present in bridge elements. Removal and proper disposal of lead based or lead containing materials is incidental to 203-020A Removal of Bridge – Full and 203-020B Removal of Bridge - Full.

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NAMPA & MERIDIAN IRRIGATION DISTRICT (NMID) COORDINATION

Coordinate all construction work and temporary traffic control with the NMID Capital Projects Manager and their contractor working on their adjacent Ridenbaugh Headworks Modernization project. Notify the NMID Capital Projects Manager before installing coffer dams for work within the Boise River and when installing temporary traffic control that impacts the NMID driveways to their properties. Immediately stop work and notify the Capital Projects Manager if there are operational impacts the operations of the Ridenbaugh Canal.

Coordinate with:

Greg Curtis Capital Projects Manager NMID 1503 1st Street South Nampa, Idaho 83651 208.466.7861 GCurtis@nmid.org

NATIONAL POLLUTANTS DISCHARGE ELIMINATION SYSTEM (NPDES) GENERAL PERMIT/SWPPP

A SWPPP is required for the Project.

NONEXCUSABLE DELAY

An Administrative penalty equal to the value of a Liquidated Damage will be assessed for any day past April 30, 2028 that project field work has not started.

ON-SITE SUPERVISION

Provide competent supervision during all construction activities, including SUBCONTRACTORS activities.

Identify the site superintendent at the preconstruction conference and they must be on-site from the notice to proceed date to the completion date at a minimum. If for any reason the site superintendent needs to be replaced by the General Contractor, submit a written notice to ACHD within (5) five working days before the event occurs.

PAVEMENT SURFACE SMOOTHNESS

Surface smoothness must be in accordance with ITD straightedge requirements.

POWER SUPPLY

If indicated on the plans or directed by ACHD install a three-wire electrical service to be used at 120/240 volts, single phase, 60 hertz AC between the power supply and the service cabinet. Install a junction box a maximum of two (2) feet from the power supply. The distance from the power source to the service cabinet must not exceed 300’ without approval from the ACHD Signal Coordinator. Coordinate with Idaho Power for the power connection location. The District shall be responsible for all Idaho Power fees related to power supply and connection. Have Idaho Power submit paperwork to the ACHD Utility Coordinator for the connection a minimum of sixty (60) working days prior to activating the new power supply. Be responsible for all electrical permit fees.

PROPERTY OWNER COORDINATION

Coordinate items of work affecting adjacent property owners, including but not limited to landscape removal and replacement, sprinklers, irrigation facilities, fencing, sod care, and trees. Conduct property access coordination according to ACHD General Condition 49 – PROPERTY ACCESS POINTS. The property owner will be given twenty-one (21) calendar days’ notice, in writing, prior to commencing work. Property

BRIDGE KEY NO. 12811 & 12806 Page 11 of 84 owner coordination will be considered incidental to the project, and no separate payment will be made.

Coordinate with ACHD for property owner contact information. ACHD contact:

David Rader Sr. Project Manager | ROW & Project Management Ada County Highway District (ACHD) 5800 N Meeker Ave. Boise, ID 83713 Phone: (208)387-6235 Drader@achdidaho.org

RE-TESTING OF MATERIALS

Re-testing necessitated by the failure of quality assurance testing of materials placed by the contractor must be at the contractor’s expense. These costs shall be deducted from progress estimates.

SALVAGE BIKE FIX STATION

Coordinate with the City of Boise to remove the bike fix station at Sta. 417+60 LT. Contact Trevor Kesner at 208-608-7847 or tkesner@cityofboise.org to coordinate for city staff to remove the bike fix station.

SITE CLEANUP

Upon completion of all work, clean the entire construction site. Final clean up consists of removal of all construction debris, trash, remaining construction stakes, construction signs, etc. from the site. Sweep all sidewalks and streets as necessary to remove any soil, rocks, gravel or other materials. Clean all catch basins and manholes removing any sand, dirt, gravel or debris. Final cleanup is considered incidental to the project, and no separate payment will be made.

SOFT SUBGRADE SOILS

Anticipate encountering soft, moisture sensitive subgrade soils during construction. These soils may be prone to rutting or pumping under construction machinery. Protect these soils during construction activities.

Determine how to best achieve this requirement. No separate measurement or payment will be made for any excavation or replacement of excavated material below subgrade elevation made necessary due to construction activities.

SPRING BREAKUP

Contractor is responsible for determining any roadway load restrictions in place along anticipated haul roads.

Information is available and can be obtained from the local roadway agency. The Engineer will not consider additional time or payment for impact of posted restrictions, known at the time of bidding, once under construction.

STORMWATER FLOWS

Transmit existing stormwater and irrigation flows during construction. All costs associated with transmitting existing flows, including flows from the temporary water quality best management practices on the project, are considered incidental to other items of work and no additional compensation will be made.

STORM WATER MANAGEMENT

Implement controls to protect storm sewer systems & waters of the U.S. located on or near project limits.

Contractor to follow requirements of the NPDES as issued to the Ada County Highway District by the EPA.

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The contractor is required to implement and maintain said plan through life of contract. The removal of all temporary construction Best Management Practices (BMPs) after completion of all required work to final stabilization is considered incidental to this project.

The ACHD Construction Site Discharge Control (CSDC) Plan shall meet the CSDC Program requirements listed in Sections 8305 to 8306 of the ACHD Policy Manual. Include measures to protect the existing ACHD storm drain systems inside and outside the project boundaries from mud, dust, debris, and other pollutants generated or transported due to this project. All measures will also be implemented to protect any “Waters of the United States” inside or outside of the project boundaries. “Pollutants” are defined in Section 8302 of the ACHD Policy Manual.

BMPs for controlling pollutant transport from the construction site and activities can be found in a number of publications and locations including, but not limited to:

a) Idaho Department of Environmental Quality, Idaho Catalog of Storm Water Best Management Practices: Phone: (208) 373-0502 or on the internet: https://www.deq.idaho.gov/water-quality/wastewater/storm-water/

b) United States Environmental Protection Agency – Region 10: (800) 424-4372 or on the internet at:

www.epa.gov/r10earth/stormwater.htm

c) Boise City Planning and Development Services: phone: (208) 395-7818

d) Idaho Transportation Department, Erosion and Sediment Control Manual, phone: (208) 334-8476

Payment for this item will be made under the appropriate bid item numbers.

SUBGRADE

Maintain the integrity for the exposed subgrade. Remedy degradation due to operations or weather under the guidance of a geotechnical engineer.

All costs to maintain and repair, including geotechnical engineering, etc. are incidental to the project and no additional compensation will be made.

TACK COAT

Substitution of CSS-1H for CSS-1 Tack Coat will be allowed as approved by the Engineer. Tack Coat to be placed between lifts of flexible pavement at the applicable rate indicated in the Estimating Basis General Note contained herein.

TEMPORARY BRIDGE AND DETOUR

Construct approximately 300-feet of temporary paved access road and install temporary bridge over the Ridenbaugh Canal as shown in the contract documents. Connect temporary asphalt pavement from the temporary bridge to Eckert Road and the Barber Park Driveway so there are no bumps or grade breaks exceeding 2%. Provide a separate gravel driveway from Eckert Road to the Nampa & Meridian Irrigation District (NMID) property south of the temporary access road for Nampa & Meridian Irrigation District use only.

Retain and protect the existing underground water and irrigation lines and the irrigation line outfall near the Ridenbaugh Canal on the NMID property.

Submit roadway design drawings in accordance with 105.02 for Engineer approval prior to ordering material and performing work. Include the following in the shop drawings:

1. Location and limits of the temporary roadway and gravel driveway with respect to an existing or established survey line.

2. Construction and removal sequence.

BRIDGE KEY NO. 12811 & 12806 Page 13 of 84

3. Plan, profile, and section views of the temporary roadway and gravel driveway including necessary dimensions and elevations.

4. Excavation limits relative to adjacent existing and proposed features.

5. Design calculations.

6. Depths to all sub surface utilities within the construction limits.

Coordinate work with the NMID Capital Projects Manager before procuring materials or beginning work on the temporary paved access road and temporary bridge.

Greg Curtis Capital Projects Manager NMID 1503 1st Street South Nampa, Idaho 83651 208.466.7861 GCurtis@nmid.org

Complete all work prior to implementing the detour route that will use these improvements.

Construct the temporary bridge in accordance with item S501-20A SP Bridge – Temporary Bridge.

Upon completed use of the temporary bridge and temporary paved access road, remove the temporary bridge and demolish the roadway. Coordinate with the NMID Capital Projects Manager to stockpile the demolished roadway materials on their property for their use.

TRENCHING

All excavation and trenching must meet OSHA requirements. Backfill and properly compact trenches, close at the end of each day, and barricade, as needed.

TRUCK/TRAILER LOAD COVERAGE

Cover and properly secured all loads of gravel, sand, dirt, landscape bark, and other loose material hauled on the public roadway within Ada County by the Contractor or any of its subcontractors so as to prevent the load from dropping, sifting, leaking, or otherwise escaping from the vehicle or becoming loose, detached, or in any manner a hazard to other uses of the public roadway.

Each violation of this requirement will be subject to liquidated damages in an amount no less than $500.00 and no more than $1,000.00 as determined by ACHD, and such liquidated damages will be cumulative and in addition to any other liquidated damages that might be imposed upon the Contractor.

WARNING AND REGULATORY SIGNS

Retain and protect existing warning and regulatory signing throughout the project limits unless otherwise noted. This may require multiple relocations, which will be incidental to other bid items. Maintain existing warning and regulatory signs that are designated for removal and replacement and do not conflict with construction traffic control signs during construction and, if necessary, relocate to locations where the signs are visible to traffic and serve their original purpose.

WORKING HOURS

Unless otherwise specified here the regular working hours for this contract are:

BRIDGE KEY NO. 12811 & 12806 Page 14 of 84

• Monday to Friday, between 7:00 AM and 7:00 PM and Saturday and Sunday, between 8:00 AM and 6:00 PM, unless otherwise approved by the City of Boise Planning Director for temporary construction activity unless otherwise approved by the Engineer.

• Pile Driving Time Restrictions - Pile driving activities will be restricted to the hours between 9:00AM

– 5:00PM.

Provide the Engineer with a minimum of 1- week advance notice of nighttime work. All night work lighting will be paid under Item Z629-05A – Mobilization.

UTILITY COORDINATOR PROVIDED BY THE CONTRACTOR 01/18

Provide an individual whose primary responsibility is to coordinate the work with each utility company that will or may affect the utility company’s property, facilities, or operations. Ensure this individual is readily available by telephone whenever there is work being done by the Contractor, subcontractor, lower-tier subcontractor, or utility company.

The Department will not make separate payment for coordinating the work that affects each utility company’s property, facilities, or operations. This work coordination is incidental and included in the ground disturbing construction contract pay items.

Ensure this individual is responsible for the following activities and makes documents generated by these activities available to the Contractor, utility company, and the Engineer:

1. Maintaining and posting a list of emergency telephone numbers for the Contractor and its subcontractors (including lower-tier subcontractors), each utility company, and the Engineer.

2. Notifying the Contractor and its subcontractors (including lower-tier subcontractors), each utility company, and the Engineer of a method, including telephone number, to contact the utility coordination individual. An alternate contact person with telephone number will be provided for situations when the utility coordination individual is not available.

3. Maintaining and documenting in writing all instructions, general discussions, or meetings notes that involve work on each utility company’s property or facilities or work which has or may affect the utility operations.

4. Maintaining and documenting in written or printed format the proposed and actual time schedules of work on utility property or facilities. Time schedules are to show the Contractor and its subcontractor (including lower-tier subcontractors), and each utility company activities.

5. Maintaining and documenting in writing a diary of work each day that involves utility and facilities, and any work that has or may affect the utility operations.

6. Coordinating with each utility company and the Engineer to resolve utility conflict and for any needed change orders to address utility conflicts.

ON PAGE 28, SUBSECTION 104.01.B. – CONSTRUCTION PARTNERING

Delete the entire section.

ON PAGE 36, SUBSECTION 105.04 – COORDINATION OF CONTRACT DOCUMENTS 11/25

Delete items 7 through 12 and add the following:

7. Standard Supplementals

8. Standard Specifications

BRIDGE KEY NO. 12811 & 12806 Page 15 of 84

9. Standard Drawings

ON PAGE 37, SUBSECTION 105.07 – UTILITY FACILITIES 07/24

Add the following to the end of the subsection:

The following utility companies have facilities within the project limits:

City of Boise Lighting Tom Marshall 829 South 17th Street Boise, ID 83702 208.608.7526 TMarshall@cityofboise.org

Coordinate with the City of Boise to remove the existing light pole at the Barber Park driveway, install new lighting and power sources, and connect circuit # 1 to existing power source in the northwest corner of the Eckert Road and Millbrook Way intersection.

Idaho Power Dan Hammerquist 1221 W. Idaho Street P.O. Box 70, Boise, ID 83707 208.388.2747 dhammerquist@idahopower.com

Idaho Power has both overhead and underground power within the work zone that requires relocation and adjustment during construction of this project. Once conduit is provided through the bridges and under the box culvert, Idaho Power will relocate their facilities to the new conduit. Allow Idaho Power access to the work area for their activities.

BRIDGE KEY NO. 12811 & 12806 Page 16 of 84

Intermountain Gas Roger Phillips 555 South Cole Road P.O. Box 7608 Boise, ID 83706 208.488.5480 roger.phillips@intgas.com

Intermountain Gas has a line along the east side of Eckert Road and the bridges with services into Barber Park and the NMID property. These facilities will need to be relocated by the utility owner to the new bridges as part of the project. Allow Intermountain Gas access to the work area for their activities.

Lumen Aaron Kowal Engineering Division 1325 W. Amity Road Boise, Idaho 83705 208.385.2600 aaron.kowal@lumen.com

Lumen has several fiber cables located on the west side of Eckert Road and along the Ridenbaugh Canal along with several junction boxes. These facilities will need to be relocated by the utility owner to the new bridges as part of the project.

Nampa & Meridian Irrigation District David Duvall Water Superintendent NMID 5525 E. Greenhurst Rd.

Nampa Idaho 83686 208.466.0663 DDuvall@nmid.org

Irrigation facilities within NMID jurisdiction fall within the project limits and are impacted by the project.

Replace the Ridenbaugh Canal Bridge as detailed in the plans. Retain and protect the water line that crosses under Eckert Road between the NMID properties. Retain and protect the telemetry line that runs from the existing bridge downstream along the Ridenbaugh Canal. Remove and reset the junction box for the telemetry line that is attached to the existing bridge to the new bridge. Coordinate all work with the NMID t.

Sparklight Kevin Wakagawa 8400 W Westpark St.

Boise, ID 83704 208.375.8288 kevin.wakagawa@sparklight.biz

BRIDGE KEY NO. 12811 & 12806 Page 17 of 84

Sparklight has overhead cables located on the Idaho Power poles and underground lines into Barber Park and on the east and west sides of Eckert Road north of the Boise River. These facilities will need to be relocated by the utility owner to the new bridges as part of the project.

Veolia Alan Christy 8248 West Victory Road Boise, ID 83709 208.617.9433 alan.christy@veolia.com

Veolia has a 16” water line along the east side of Eckert Road and the bridges with a service line along the south side of Barber Park driveway. A new water line will need to be located by the utility owner to the new bridges as part of the project.

Zayo Brad Leatherman 350 N Mitchell St.

Boise, ID 83704 208.336.9200 bradley.leatherman@zayo.com

Zayo has existing underground communication lines on the east side of Eckert Road. These facilities will need to be relocated by the utility owner to the new bridges as part of the project.

ON PAGE 60, SUBSECTION 106.01.B – USE TAX 04/23

Add the following sentence to the end of the subsection:

The estimated cost of ACHD supplied materials is:

Item 619-010A – Illumination Ty 2

Item Number

Item Description Quantity Total Cost

Pole, steel, 40-foot mounting height luminaire pole (includes anchor bolts). To be furnished with one 10-foot luminaire mast arm.

Unit Cost = $3,874.00 each

3 $11,622.00

Electric Service Pedestal: 200 Amp entrance 100 AMP (dual meter) pedestal to include dual meter bases. (Includes anchor bolts).

Unit Cost = $4,602.00 each

1 $4,602.00

Luminaire: LED Lumark Navion NAV-SA3A-740-U- T3 Cost = $205.00 Each

3 $615.00

Estimated illumination equipment to be supplied by ACHD.

Total $16,839.00

BRIDGE KEY NO. 12811 & 12806 Page 18 of 84

Item 619-010B – Illumination Ty 2

Item Number

Item Description Quantity Total Cost

Electric Service Pedestal: 200 Amp entrance 100 AMP (dual meter) pedestal to include dual meter bases. (Includes anchor bolts).

Unit Cost = $4,602.00 each

1 $4,602.00

Estimated illumination equipment to be supplied by ACHD.

Total $4,602.00

Item S904-05A – SP CCTV Video System

Item Number

Item Description Quantity Total Cost

CCTV Camera: Pan, Tilt, & Zoom Camera (Bosch IP Starlight 7100i Series HD). To be furnished with one 6-foot luminaire mast arm.

Unit Cost = $4,250.00 each

1 $4,250.00

Econolite Safetran Model 334 Cabinet: supplied with cellular modem, power panel, and ethernet switch.

Unit Cost = $4,785.00 each

1 $4,785.00

Estimated CCTV Video System equipment to be supplied by ACHD.

Total $9035.00

ON PAGE 66, SUBSECTION 107.01 - LAWS TO BE OBSERVED

Insert the following after the first paragraph:

This contract is exempt from Form FHWA-1273 provisions Part IV – Davis-Bacon and Related Act Provisions.

ON PAGE 82 of 715, SUBSECTION 107.19 – SURVEY MONUMENT PRESERVATION

Under subsection 107.19.2, add the following after the first full sentence:

Research within the project limits in the Multi-State Control Point Database (MCPD) for survey monuments within the work zone to determine the possible existence of survey monuments to preserve and protect or to be reestablished after construction. Document that this research has been completed.

ON PAGE 84 of 715, SUBSECTION 107.19 – SURVEY MONUMENT PRESERVATION

Under subsection 107.19.9.g, add the following at the end of the subsection:

The provisions of Section 107.08 will apply.

ON PAGE 10 OF 2025 SUPPLEMENTAL SPECIFICATIONS, 109.01.A.14 – ELECTRONIC TICKETING (e-

TICKETING) FOR MATERIALS (06/25)

Delete the second paragraph and replace it with:

BRIDGE KEY NO. 12811 & 12806 Page 19 of 84

Register here https://www.haulhub.com/agency/idaho#signup to begin using the Department’s Electronic Ticketing Portal system.

ON PAGE 112, SUBSECTION 109.05 – PARTIAL PAYMENT

In the second sentence of the first paragraph delete “at least”.

Delete the 3rd sentence in the first paragraph.

ON PAGE 133 of 715, SUBSECTION 202.03 – CONSTRUCTION REQUIREMENTS

Under subsection 202.03.A, add the following at the end of the subsection:

Verify which trees along the Boise River identified in the plans for removal must be removed for construction activities. If trees identified for removal can be retained, coordinate with the Engineer to retain and protect them.

ON PAGE 134, SUBSECTION 203.03 – CONSTRUCTION REQUIREMENTS 04/23

Add the following to the end of 203.03.B:

Remove the bridge structures without depositing lead contaminated waste/debris onto the ground, into the air, or in the waterway.

Do not use torch or electric arc cutting methods unless the area to be cut has had the lead paint removed by an Engineer approved method.

Comply with the construction/demolition permits issued for this work; 203; and EPA, OSHA, and State environmental,…