biddoc.pdf

MESA-J-23.1A Bridge Replacement Design Request For Proposal

RFP-26-BS-J-23.1A

Table of Contents

Section I Proposal Information

1.1 Pre-proposal Conference

1.2 Submission of Proposal

1.3 Number of Copies

1.4 Proposal Information

1.5 Offeror Due Diligence

1.6 Open Records

1.7 Addenda

1.8 Withdrawal or Modification of Offers

1.9 Acceptance

1.10 Proposal Preparation Cost

1.11 Award

1.12 Contract Administration.

1.13 Substantive Proposals

1.14 Governing Law

1.15 Schedule of Events

1.16 Inquiries

Section II Minimum Specifications

2.0 Summary of Intent

2.1 Project Description

2.2 General Information

2.3 Required Compliance

2.4 Standards

2.5 Project Information

2.6 Project Management Requirements

2.7 Data Collection and Analysis

2.8 Preliminary Design (30%)

2.9 Intermediate Design (60%)

2.10 Final Design (90%)

2.11 Design Phase Completion

2.12 Design Phase Duration

2.13 Bid Phase Services

2.14 Construction Phase Services

2.15 Contract Duration

Section III Proposal Content

3.0 Summary

3.1 Proposal Format

3.2 Proposal Requirements

3.3 Information Technology Access to Persons with Disabilities

3.4 Company Background, Team Personnel and Technical Expertise

3.5 Ability to Meet Project Schedule

3.6 Previous Projects Similar in Scope

3.7 Familiarity with Project and Area

3.8 Project Approach and Proposed Schedule

3.9 Quality Assurance Methods

3.10 Cost Proposal

3.11 References

3.12 Exceptions

3.13 Insurance Clarification

3.14 Redacted Version – As Applicable

Section IV Evaluation Criteria

4.0 Evaluation Criteria

4.1 Selection Committee

4.2 Evaluation Process

4.3 Award of Contract

Section V Contract Terms and Conditions Attachment A – Schedule of Payment Attachment B – Hourly Rate Schedule Attachment C – Schedule of Fees (Cost Proposal) Attachment D – Financial and Exception Statement Attachment E – Insurance Clarification Agreement

Mesa County is committed to digital accessibility. If any part of this solicitation prevents you from participating fully due to a sensory, cognitive, or mobility disability, please contact KC Selleck to request accommodations.

kc.selleck@mesacounty.us

SECTION I

PROPOSAL INFORMATION

Section I provides general information to potential Offerors on subjects such as where to submit proposals, number of copies, addenda, proprietary information designation, and other similar administrative elements.

1.1 PRE-PROPOSAL CONFERENCE

There will be no pre-proposal conference for this project.

1.2 SUBMISSION OF PROPOSAL

All proposals must be submitted via BidNet (https://RockyMountainBidSystem.com), and received prior to the submission deadline. The County will NOT accept electronic submittal via email or hard copies.

**************NO LATE OFFERS WILL BE ACCEPTED***********

FACSIMILE OR TELEGRAPHIC SUBMITTALS WILL NOT BE ACCEPTED

Submission Deadline: 5:00 pm (MT) on September 15th, 2026

The opening will not be public. Offerors will be notified if their proposal is not accepted. The proposal shall remain the property of Mesa County Public Works.

1.3 NUMBER OF COPIES

Consultant shall submit one (1) copy of requested documents. The submittal shall remain the property of Mesa County Public Works. The following materials shall be part of the requested documents:

1. Proposal including all information as outlined in Section III of this Request for Proposal

a) Attachment A – Schedule of Payment

b) Attachment B – Hourly Rate Schedule

c) Attachment C – Schedule of Fees

d) Attachment D – Financial and Exception Statement

e) Attachment E – Insurance Clarification

f) Signed Addenda, if applicable https://rockymountainbidsystem.com/

1.4 PROPOSAL INFORMATION

All questions regarding the proposal preparation, the selection process, or specifications and interpretations of the terms and conditions of the RFP, shall be submitted via Bidnet.

Addenda will be issued, if in the opinion of the County, it is necessary.

Following the award of a contract, responses to this solicitation may be subject to release as public information unless the response or specific parts of the response can be shown to be exempt from public information. Offerors are advised to consult with their legal counsel regarding disclosure issues and take the appropriate precautions to safeguard trade secrets or any other proprietary information. Mesa County Public Works assumes no obligation or responsibility for asserting legal arguments on behalf of potential Offerors.

This is not a public bid opening; therefore, Mesa County will not release any information pertaining to the number of offers received, names of Offerors, or pricing until an award is made. Mesa County will confirm receipt of your proposal if requested.

1.5 OFFEROR DUE DILIGENCE

Each Offeror shall judge for themselves as to all conditions and circumstances having relationships to the proposal, and become informed about the unique challenges posed by this project. Failure on the part of any Offeror to make such examination and become informed shall not constitute ground for declaration of not understanding the conditions with respect to making its proposal.

If the Offeror has obtained this RFP from any source other than directly from Mesa County, and does not check the web site for any addenda, Mesa County is not responsible for errors in the submittal which may result in submitting a non-responsive proposal.

1.6 OPEN RECORDS

Mesa County is a governmental entity subject to the Colorado Open Records Act (CORA), C.R.S. § 24-72-200.1 et seq., and documents and records in its possession may be subject to public disclosure upon request, unless specifically exempted under CORA or other applicable law. To the extent permitted by law, County agrees to use reasonable efforts to protect from disclosure any confidential or proprietary information clearly marked as “Confidential” or otherwise identified in writing as confidential by Offeror at the time of the information is provided to the County (“Confidential Information”). In the event a CORA request is made for information which has been designated “Confidential” pursuant to this provision, Mesa County shall:

a. Upon receipt of such request notify Offeror of any CORA request that may include Confidential Information. Such notification will include a statement as to whether the County will be asserting the exemption;

b. Withhold or redact Confidential Information from disclosure to the extent permitted by CORA;

c. Allow Offeror a reasonable opportunity to seek a protective order or other legal remedy if necessary to prevent disclosure, so long as such action is taken expeditiously and does not cause the county to default or otherwise violate the County’s CORA obligations.

Nothing in this provision shall be construed as requiring either Party to violate CORA or any other applicable law, or as guaranteeing nondisclosure of any records that are determined by a court or other authority to be subject to public release.

Upon award of a contract to a successful Offeror, all responses to this solicitation, including those submitted by unsuccessful offerors, become public records, and all materials provided in response to this solicitation are subject to disclosure under the Colorado Open Records Act (CORA). For this reason, in the event of a CORA request, if provided, the redacted electronic copy will be used to respond to CORA requests. Proposers that do not provide a redacted electronic copy acknowledge that the unredacted electronic copy may be used to respond to CORA requests.

Upon receipt of a CORA request that includes any information marked “Confidential” the County will consider the following in whether or not it will deem the information as confidential and not release it if:

1. The disclosure of information would be likely to impair the government’s future ability to gain necessary information; or

2. The disclosure of information would be likely to cause substantial harm to the competitive position of the person providing the information.

If the Offeror wishes the information to remain confidential, information to support either one of these positions should be included with the bid documentation for consideration by the County.

1.7 ADDENDA

In the event that it becomes necessary to revise any part of this RFP, or if additional information is necessary to enable the Offeror to make an adequate interpretation of this RFP, an addendum to the RFP will be provided on the web page (http://www.mesacounty.us/publicworks/bids/). Addenda to this RFP may be issued at any time prior to the time set for receipt of proposals, therefore Offerors should check the web site often. The Offerors are required to acknowledge receipt of any addenda by submitting a signed copy of each addendum issued. Signed copies must be submitted as part of the signed proposal submittal.

http://www.mesacounty.us/publicworks/bids/

1.8 WITHDRAWAL OR MODIFICATION OF OFFERS

Any Offeror may modify or withdraw an offer in writing at any time prior to the deadline for submission of an offer (see 1.2 above) unless otherwise required in the RFP. Any request for withdrawal of an offer must be signed by the individual who signed the initial proposal submittal.

1.9 ACCEPTANCE

Any offer received shall be considered an offer, which may be accepted by Mesa County based on initial submission without discussions or negotiations.

By submitting an offer in response to this solicitation the Offeror agrees that any offer it submits may be accepted by Mesa County at any time within 90 days from the closing (see

1.2 above).

Mesa County reserves the right to reject any portion or the entire offer and to waive informalities and minor irregularities in offers received, and/or to accept any portion of the offer if deemed in the best interest of Mesa County. Failure of the Offeror to provide in its offer any information requested in the RFP may result in rejection for non-responsiveness.

1.10 PROPOSAL PREPARATION COST

The cost of proposal preparation is not a reimbursable cost. Proposal preparation costs shall be at the Offeror’s expense and are the Offeror’s sole responsibility.

1.11 AWARD

It is the intent of Mesa County to select the firm that is considered to be the highest qualified, most responsive, responsible, and best value, and technically able to provide the required services within the project’s proposed schedule. Selection of a firm will be made on the proposals received as set forth in Section IV.

1.12 CONTRACT ADMINISTRATION

Mesa County Public Works shall be responsible for administration of the contract for compliance and performance with the interpretation of terms and obligations, scope, schedule, and budget.

1.13 SUBSTANTIATIVE PROPOSALS

The Offeror shall certify (a) that his/her proposal is genuine and is not made in the interest of, or on behalf of, any undisclosed person, firm, or corporation; (b) that he/she has not directly or indirectly induced or solicited any other Offeror to put in a false or sham bid;

(c) that he/she has not solicited or induced any other person, firm, or corporation from proposing; and (d) that he/she has not sought by collusion to obtain for himself/herself any advantage over any other Offerors or over Mesa County.

1.14 GOVERNING LAW

The laws of the State of Colorado shall govern any contract executed between the successful consultant and Mesa County. Further, the place of performance and transaction of business shall be deemed to be in the County of Mesa, State of Colorado, and in the event of litigation, the exclusive venue and place of jurisdiction shall be the District Court of the Twenty-First Judicial District, Mesa County, Colorado.

1.15 SCHEDULE OF EVENTS

The schedules of events are as follows:

Advertise Request for Proposal 8/24/2026 Document Available 8/24/2026 Pre-proposal Conference NONE Written Questions Due Date 9/8/2026 Proposal Submittal Due Date 9/15/2026 Award of Contract (estimate) 9/22/2026 Contract Presented in Public Hearing to the Board of County Commissioners (estimate)

10/13/2026

Kick-Off Meeting (estimate) 10/27/2026 Final Construction Plans and Contract Documents Due 8/16/2027

1.16 INQUIRIES

Technical questions about the scope of services, budget and finance, or other project specific question regarding this RFP shall submitted via Bidnet. All procurement questions concerning the proposal process or any contractual questions shall be submitted via Bidnet.

A written response to any inquiry will be provided in the form of an Addendum to the solicitation to each Offeror via Bidnet. Verbal inquiries will not be accepted.

WRITTEN QUESTIONS RELATED TO THIS RFP SHOULD ONLY BE

DIRECTED TO THE MESA COUNTY PUBLIC WORKS DEPARTMENT. ANY

CONTACT WITH OTHER MESA COUNTY DEPARTMENTS BY YOUR FIRM

WILL BE CONSIDERED GROUNDS TO DISQUALIFY YOUR FIRM’S

RESPONSE TO THIS RFP.

SECTION II

MINIMUM SPECIFICATIONS

2.0 SUMMARY OF INTENT

It is the intent of this Request for Proposals (RFP) to award a contract to a consulting firm for design work, as detailed below, associated with the successful completion of the MESA-J-23.1A Bridge Replacement Project. The successful Offeror, hereinafter referred to as Consultant, must be prepared to perform services as outlined in Section II and III. It is the County’s goal to obtain professional services from a Consultant who will provide high quality plans and specifications, customer service and project management. The award of the contract will be based on the evaluation criteria outlined in Section IV of this

RFP.

2.1 PROJECT DESCRIPTION

The MESA-J-23.1A Bridge Replacement Project is located on J Road east of 23 Road at the Grand Valley Irrigation Company’s Highline Canal. The project intends to replace the existing bridge with a new structure and provide associated road improvements.

2.2 GENERAL INFORMATION

Notice to Proceed Work will not commence until the written Notice-to-Proceed is issued by Mesa County with certification from the Consultant that the work will be completed within the allotted time. Subject to approval, the time charged may exclude the time lost for:

• Reviews and approvals

• Response and direction

Consultant Responsibility and Duties The Consultant shall designate a Project Manager, hereinafter referred to as Consultant PM, who shall be responsible for all professional design services required for Final Design Plans, Construction Specifications and Construction Contract Documents. Consultant is responsible for analysis of pertinent project related items and the preparation of plans, specifications and estimates for the construction advertisement of the project. The Consultant is also responsible for providing engineering services for the acceptance of construction of the improvements. The Consultant shall appoint a responsible member of the firm to be the contact person for all services after design. That person will be available until the end of construction to provide resources for the Mesa County Project Manager and the selected contractor in order to expedite the construction of the project and to provide timely response to design issues as they arise.

The Consultant shall further be required to assist the County in securing any and all required permits as may be necessary for completion of the project.

Descriptions of the consultant responsibilities and duties are further described in this document.

Project Management Team The project management team shall consist of the County Project Manager (County PM) and the Consultant Project Manager (Consultant PM).

Project Communication and Billing The routine working contact will be between the County PM and the Consultant PM. The Consultant PM and County PM will provide each other with the following:

• A written synopsis or copy of their respective contacts (both by telephone and in person) with others regarding the project

• Copies of pertinent written communications

The Consultant will provide the following on a routine basis:

• Coordination of all contract activities by the Consultant PM

• Periodic reports and monthly billings (the billings will include a current project schedule with identified milestones, percent of work complete by project task, percent of budget spent for each project task, and percent of budget remaining for each project task)

Approval of Reports and Submittals In general, all reports and submittals must be approved by the project management team prior to their content being utilized in follow-up work effort.

2.3 REQUIRED COMPLIANCE

The Consultant must comply with applicable Federal, State and/or local laws and regulations, including all other applicable laws, regulations, ordinances, codes and rules of any governmental entities that have jurisdiction. The Consultant agrees to indemnify and hold harmless Mesa County against all losses, expenses, and damages arising from the Consultant’s violation of any of the above laws, regulations ordinances, codes, rules and negligence.

Consultant shall comply with and the work product provided under this Contract shall be in compliance with all applicable provisions of §§24-85-101, et seq., C.R.S., and the Accessibility Standards for Individuals with a Disability, as established by the State of Colorado's Governor's Office of Information Technology pursuant to Section §24-85-103 (2.5), C.R.S. Contractor shall also comply with all State of Colorado technology standards related to technology accessibility and with Level AA of the most current version of the Web Content Accessibility Guidelines (WCAG), incorporated in the State of Colorado technology standards.

2.4 STANDARDS

The design shall utilize the existing Mesa County right of way and existing easements where possible. Additional right of way, easements and temporary construction easements for any encroachments by road realignment, slopes or facilities on property outside the existing right of way limits shall be identified by the Consultant and will be obtained by Mesa County.

The project design shall conform to all Mesa County policies and the “desirable” design standards identified by the Consultant and accepted by Mesa County. These standards shall utilize the Mesa County Design Standard, Mesa County Standard Construction Specifications, Mesa County Stormwater Management Manual, AASHTO Design Manual, Colorado Department of Transportation (CDOT) Standard Specifications for Road and Bridge Construction (latest edition), CDOT M&S Standards (latest edition), CDOT Bridge Design Manual, ASCE 38 Utility Engineering Standards, and other industry standards as reference. Where necessary, the Consultant may use engineering judgment in varying from the “desirable” design standards. In such a case, the Consultant shall document in writing the project specific condition that necessitated variance from the standards along with a description of the basis behind selection of the new varied standard. In any case, project features shall comply with all Federal and State regulations.

Design and geotechnical engineering work shall be performed by a Professional Engineer (PE) registered in the State of Colorado and said engineer shall be designated as the PE of record for this project. The PE shall be in good standing with the Colorado Department of Regulatory Agencies throughout the project.

Survey work shall be performed by a Professional Land Surveyor (PLS) registered in the State of Colorado and said surveyor shall be designated as the PLS of record for this project. All surveying work shall be based on the Mesa County Local Coordinate System (MCLCS). The PLS shall be in good standing with the Colorado Department of Regulatory Agencies throughout the project.

The consultant shall employ sub consultants as necessary to assist with areas of expertise not within the company’s available resources.

2.5 PROJECT INFORMATION

Project Background The MESA-J-23.1A Bridge Replacement Project is located on J Road east of 23 Road at the Grand Valley Irrigation Company’s Highline Canal. The existing bridge was constructed in 1985 and it has reached the end of its service life. The project intends to replace the existing bridge with a new structure and provide associated road improvements.

This work shall be in conformance with all applicable Colorado Department of Transportation and/or Mesa County standards and policies, unless otherwise approved by the County PM.

Project Goals This project is intended to produce the following improvements:

• New structure over the GVIC Highline Canal

• Associated road improvements

Items to Be Provided by Mesa County To complete the deliverables, the following items will be furnished to the Consultant by Mesa County:

• Right-of-way acquisition, Exhibit examples, and appraisal services

• Right-of-way base map

• MESA-J-23.1A Inspection Report

• Title work as acquired to construct the baseline map which shall cover all landowners and identify which landowners have liens, loans and or mortgages.

Existing Features Existing facilities, vegetative components, structures, utilities and lighting will be identified and evaluated by the Consultant as part of this project. Known facilities and/or structures include trees, bushes, fences, gates, overhead powerlines, utility pedestals, utility conduits, mailboxes, and irrigation structures.

2.6 PROJECT MANAGEMENT REQUIREMENTS

Project Coordination The consultant shall be responsible for the following:

• Coordination of all work tasks being accomplished by all parties to ensure work completion stages are on schedule.

• Framework for communication between the County, affected residents and property owners, utility companies, districts and other impacted entities

• Identification of contact information for all utility owners, including irrigation water suppliers and users.

• Identification of potential utility construction/relocation problems and/or conflicts and coordination with utility companies and conflicting utility resolution in accordance with Section 2.7 Subsurface Utility Engineering

• Identification of affected property owners, their contact information (using the assessor records) and coordination of the design with them

• Communication with neighbors and administration of # neighborhood meetings

• Meeting minutes

It is anticipated that coordination will be required with the following entities:

• Mesa County

• Public Utilities Commission

• Colorado Department of Public Health and Environment

• Affected utility providers (to be determined during survey). Known utility companies include: Spectrum Communications, Grand Junction Drainage District, Grand Valley Rural Power, Lumen/Centurylink, Ute Water, and Xcel Energy & Gas.

• Affected irrigation providers (to be determined during the subsurface utility engineering. Known irrigation companies include: Grand Valley Irrigation Company, Grand Valley Water Users Association.

• Federal and State Agencies

• Environmental Clearance Agencies

• Adjacent property owners

Affected Property Owner Information and Design Coordination The Consultant will establish a line of communication with each property owner affected by the project to accomplish the following:

• Survey to establish known features and baseline information on landowner’s property for Right of Way and Design Maps.

• Provide current project information

• Communicate and coordinate impacts the project will have on the frontage of their property at 30% design and 90% design, as a minimum

• Coordinate acquisition of right-of-way, permanent easement, temporary construction easements and other right-of-way/easement activities

A public project meeting / open house will be arranged by the Consultant after the Project 30% and 90% design phases.

The Consultant shall designate a member of the design team as the Property Owner Manager to be the primary contact for property owners. A record of all communication between the Property Owner Manager and property owners shall be maintained and made part of the project records. The Consultant’s designated Property Owner Manager, the County PM, and/or the County ROW Agent, will meet with each property owner a minimum of 2 times during the preconstruction phase.

Schedule Preparation, Tracking and Coordination The project activities along with communication, consensus building, project team reviews, conceptual design, data gathering, documentation, and formal public notice should be planned by the Consultant and coordinated with the County PM. The time of their accomplishment will overlap and parallel paths of activity should be planned to finish the development phase in accordance with the shortest possible schedule.

• Project schedule to be included in the contract with the final Scope of Work and cost estimate

• Project timeline with monthly up-dates to track progress toward final submittal

• Schedule shall reflect submittal dates which allow a sufficient review phase for Mesa

County Public Works prior to each progress meeting and a two week review phase after the 90% plan submittal date.

Project Meetings Progress Meetings will be arranged and conducted by the Consultant to review the following:

• Latest project developments

• Activities required to be completed since the last meeting

• Coordination and tracking of work effort

• Problems encountered/anticipated and resolution/potential solutions

• Project schedule update

• Action items

• Coordination required with other agencies

• Revised construction cost estimates

These meetings should coincide with important project milestones; however, the type and number of meetings, documents, etc., will depend on the category and characteristics of the project work. The Consultant should anticipate a minimum of 3 progress meetings with the Consultant’s design team, Mesa County Public Works and others.

It is anticipated that the following meetings will be required:

• Mesa County design kickoff meeting

• Mesa County 30% design review

• Public meeting /Public Information Meeting

• Mesa County 60% design review

• Mesa County 90% design review

• Public meeting - final plan information

• Meetings with adjacent property owners (3ea)

• Meetings with utility companies (5) including 30%, 60%, 90% Utility Design &

Relocation Coordination Meetings, and onsite meeting with utility providers to determine status of removals before 60%

Project Meeting Minutes Project Meeting Minutes shall be completed and provided to the Project Manager within five (5) working days of the actual meeting. When a definable task is discussed during a meeting, the minutes will identify the “Action Item”, the party responsible for accomplishing it, and the proposed completion date.

Quality Assurance Reviews / Accuracy Tests Quality assurance reviews and accuracy tests are vital to the success of the project and shall be performed on a regular basis throughout the project by the Consultant. Submittals shall be reviewed prior to being released for review by the County. Reviews shall be made, as a minimum, for site accuracy, constructability, drafting, and quantities. Calculations verifying the accuracy of the quantities for the major work items (i.e. earthwork, aggregate, concrete, asphalt, etc.) shall be provided at the 90% design phase. Written documentation confirming the completion of these reviews and tests shall be provided in writing to the County PM with each submittal and shall be made part of the project records. The County PM may reject any submittals that do not include documentation of such review, or for which the submittal quality indicates the review was inadequate.

Review by Professional Land Surveyor and Professional Engineer The accuracy tests/reviews are to be conducted by the PLS and PE in responsible charge for the project. Further review of all aspects of the field and office work shall also be the responsibility of the PLS and PE in responsible charge.

2.7 DATA COLLECTION AND ANALYSIS

Data collection shall extend a minimum of 10 feet beyond the right-of-way or anticipated limits of disturbance.

Initial Project Scoping

• Conduct initial research and investigations for familiarity with existing improvements, reports and conditions

• Identify scope elements, responsibilities and coordination necessary to complete the work

• Review applicable documents and requirements

• Ensure that any mitigation or commitments are addressed

• Discuss possible design options

• Identify design criteria (submit a project memo summarizing specific design criteria)

• Identify all permits and/or clearances needed including any Environmental, Federal and/or State Clearances as may be required.

Pre-survey Conference A pre-survey conference shall be held prior to start of any right-of-way or survey work.

The Consultant, their surveyor, and the County Project Manager, shall attend the Pre-survey conference.

Right-of-Entry (ROE) Some activities may require work on land not controlled by Mesa County for which the Consultant must obtain the necessary written permission to enter the premises. Written permission must be obtained prior to data collection.

• Evaluate requirements of all disciplines that require ROE including survey, geotechnical, environmental, utility, etc for the process

• Prepare ROE form(s) that identify the data collection needs, along with a description and purpose of the project (for estimating purposes it is estimated that there are approximately 4 parcels located within the corridor area and affected properties)

• Included in this written permission will be the names and telephone numbers of persons to contact should notification prior to entry be necessary

• These written permissions apply to Mesa County personnel as well as Consultant personnel

• Mailing of the ROE form(s) including a stamped self-addressed envelope with the mailing

• Obtain completed ROE form(s) to secure landowner permission to enter private property as needed to perform the required data collection

• Signed copies of written permission will be submitted to the County PM prior to entering private property for any work

• Non-responsive owners shall be telephoned, sent certified mail or contacted in person in order to obtain ROE as needed

• Since landowners are not required to provide entry, the County may need to petition the court should ingress be necessary (such petition is not included as part of this scope of work for this project)

• Some activities such as materials testing on existing pavement may require a permit

Geotechnical Investigation and Engineering

• Complete a geotechnical investigation and design report including recommended structural section and potential subgrade stabilization design. Scope of investigation should be specific to the type of work anticipated i.e. foundation design, retaining walls, roadway design, trench excavation, foundations, landslide evaluation, structural poles or any other specific items anticipated. If deep foundations, such as piling, are being considered drilling shall utilize a hollow stem auger.

• Minimum requirements according to requirements of AASHTO LRFD, CDOT Geotechnical Design Manual or CDOT Road Design Manual (Chapter 4) should be used when applicable to the project scope.

• When utility trench construction is anticipated include compaction requirements, dewatering recommendations, and utility bedding recommendations.

• Determine test hole locations and coordinate with the County PM. For roadway or utility projects that include projected reuse of excavation for fill under the roadway or for utility backfill at least one test pit up to 10 ft. deep shall be required within the project boundary.

• Collect soil samples and test for classification, moisture-density relationship, resistance value, corrosiveness, and bearing capacity

• Scope shall include evaluation of surface and subsurface soil and geologic conditions of the site relevant to the construction of the new road alignment and replacement bridges.

• Explore subsurface conditions to a depth exceeding the influence of the proposed bridge construction.

• Evaluate by laboratory and field tests the general engineering properties of the various strata which could influence the bridge construction and foundation.

• Define the general geology of the site including key geological hazards which could have an effect on the bridge construction and foundation.

• Develop geotechnical criteria for site grading and earthwork

• Identify potential construction difficulties and provide recommendations concerning these problems.

• Recommend an appropriate foundation system for anticipated structure and develop criteria for bridge foundation design. Soils and groundwater shall be evaluated for corrosion potential. The report shall contain recommendations to mitigate anticipated corrosion problems with the bridge foundation and superstructure.

• The geotechnical analysis of bridge foundations should be performed on the basis that all stream bed material in the scour prism above the total scour line for the design flood (for scour) has been removed and is not available for bearing or lateral support. In addition, the ratio of ultimate to applied loads should be greater than 1.0 for conditions of scour for the superflood. (See HEC 18, Chapter 3.)

• Prepare and submit a soils investigation report

Field exploration and laboratory testing at a minimum shall include:

• Soils Investigation utilizing ASTM D-1587 Thin-walled Shelby Tube

• ASTM D-1586 Standard Penetration Testing (SPT)

• ASTM D-2487 Soil Classification

• ASTM D-4546 One Dimensional Swell or Settlement Potential for Cohesive Soils

• ASTM D-3080 Direct Shear Strength, Cd (when needed)

• ASTM D-2937 In-Place Soil Density

• ASTM D-2216 Moisture Content of Soil

• ASTM D-2844 R Value of Soils (Hveem-Carmany) or ASTM D-1883 California

Bearing Ratio (CBR)

• ASTM D-698A Moisture Density Relationship

SURVEY

Establish Project Control Monumentation Care is to be taken to install said monumentation in locations that are readily usable for the project and in a safe location so that they can be utilized throughout construction.

Local Project Control Survey the required project control (centerline/baselines and elevation reference) as required. Prepare a survey control diagram showing graphical representation of all monuments used for control. Tabulate coordinates and physical descriptions of all found monuments and other physical evidence.

Land Survey/Boundary Survey Tie aliquot, property and other land monuments to the control survey. Prepare a Land Survey Control Diagram showing graphical representation of all found aliquot, property and land monuments and their relationship to the project control. Tabulate the coordinates and physical description of all found monuments and other physical evidence.

Certified Improvement Location Certificate Surveys (ILCs) will be required for all landowners having liens, loans, and or mortgages as identified in the provided title work.

An estimated 4 ILCs will be required.

Right-of-Way Verification and Mapping

• Mesa County will provide a right-of-way plan depicting all survey information that creates the right-of-way

• Verify the right-of-way information and locate the right-of-way to survey accuracy for use in the base map

• Stake the existing right-of-way at 100 ft. intervals and 50 ft. intervals within 150 feet of an intersection

• Intersecting right-of-ways shall be staked back 100 feet at 50 foot intervals.

• Stake permanent maintenance easements, temporary construction easements, and clear sight triangles.

• Notify the County PM of any discrepancies with the right-of-way plan and field verification

Topographic Survey

Collect the data required to produce a planimetric map. Features located will include, but not be limited to signs, trees, ornamental bushes, mailboxes, fences, driveways, curb cuts, curbs, sidewalks, and edges of pavements. Horizontal accuracy shall be comparable to the accuracy specified in the CDOT Survey Manual for a CDOT Class C survey without the TMOSS coding system requirement.

Terrain (Relief or Elevation) Survey Collect elevation data. Natural ground elevations shall be as specified in the CDOT Survey Manual.

Existing Roadway Attributes

• Collect roadway layout attributes and condition information for roadways in the study area

• Detailed comprehensive topographic survey (1 foot contour intervals) to develop a base map for design

Hydraulic Survey

• Locate culverts, storm sewer pipes, inlets, vaults, manholes and determine rim, grate and invert elevations, as applicable. Locate visible landowner and private hydraulic structures/features as needed.

• Locate inlets and determine invert elevation of pipes and pipe diameter and material.

• Accomplish drainage situation surveys for designated culverts and bridges

Base Map Development

• The information in the base map shall include but is not limited to a topographic survey and utility survey throughout project, all existing section line and right of way boundary monumentation within the project, any other survey monumentation found, topographical cross-sections of the roadway at 50 foot intervals and sufficient distance past right-of-way boundary to ensure tie-in of driveways and other grades, through and turning lane configurations, shoulder locations, general widths of shoulders, lanes and roadways, on-street parking areas, off-street parking areas, driveway and access locations, specific traffic control such as signalization or stop control, drainage, utility and irrigation facilities, sidewalk and bike facility locations, structures, utility vaults, signs, mailboxes, pedestrian crossing routes, trees, significant vegetation, landscaping features, large rocks and/or boulders, fences

• Wetlands delineation (to be performed by others) shall be included in the drawing

Traffic Control

• Consultant field activities that interfere with traffic operations within existing roadways will require control of traffic

• Consultant will plan and provide any required traffic control for the survey, testing, or the design process

• Traffic control operations will be in accordance with the MUTCD

• The proposed Method for Handling Traffic (MHT) must be submitted to the County

PM for approval

• Certification of the Traffic Control Supervisor as a worksite Traffic Supervisor by the American Traffic Safety Services Association (ATSSA) or as a TCS (Traffic Control Supervisor) by the Colorado Contractors Association (CCA) shall be required

Subsurface Utility Engineering Provide an iterative, ongoing Subsurface Utility Engineering (SUE) investigation, conflict management, and design, in accordance with ASCE (latest version) and State laws, as data flows in and design progresses. SUE should develop a full understanding of all utility infrastructure in the project area in order to anticipate issues and engineer solutions during project development as designs are conceived and laid out. The SUE is to provide a comprehensive search for the existence and approximate location of all utilities within the project limits.

SUE services can be performed either by the designer consultant or by a SUE subconsultant. Consultants providing SUE services shall include at least one professional engineer with demonstrated training and project experience in:

• Utility infrastructure mapping scope development;

• Utility records research and interpretation;

• Utility configurations and installation practices;

• Utility detection geophysical theory, application, precision, and limitations;

• Quality assurance and quality control review of utility infrastructure mapping and report deliverables;

• Engineering survey, data collection, and CAD;

• ASCE 38 knowledge and application of the standards; and

• Knowledge of typical proposed civil engineering design improvements and how those improvements affect the SUE scope of services.

Utility locators and subcontractors performing any aspect of the SUE work involving CAD, utility designating, utility locating and type identification, and surveying must be under the direct responsible charge of a registered professional who will seal the plans.

Consultants shall recommend a scope for utility investigations dependent on project needs.

This list may include a list of the types of utilities for detection and depiction and the desired utility data quality level based on the following:

• Quality Level D will only be provided for a utility segment when it is inaccessible and cannot be tied to the project survey data.

• Quality Level C will be provided for a utility segment when it is determined that the utility will require relocation prior to start of construction.

• Quality Level B shall be provided on all other utilities unless geophysical methods did not work in locating the existing utility, then Quality Level C will be provided.

• Quality Level A, with vertical location obtained via nondestructive air/vacuum means or visual observation, will be required on all existing utilities that may impact design or construction due to new gravity utility installation, bridge structures, road grade adjustments, or any other such project element. This QL A survey includes, but is not limited to, existing gravity flow utilities, including laterals and service lines; large diameter, high pressure, or asbestos cement water lines; and all gas lines that cross, or in close proximity to, new installations.

Test holes for obtaining QL A survey will be provided by Consultant, except for high pressure lines or those lines that may experience or cause significant damage by exposure.

For those lines, the Consultant shall coordinate with the utility owner in getting the lines exposed by the utility so that QL A survey information can be obtained.

In addition to the SUE cost line item, Consultant shall provide an estimated 4 QL A test holes that will be required for the project, along with a unit price for each. The actual number of test holes approved and completed will be paid for. Test holes shall be backfilled with either slurry or select backfill material.

The consultant shall prepare a .pdf copy of the stamped set plans along with a copy of the AutoCAD plans that comply with ASCE (latest version). SUE plan information shall be incorporated into, and reflected on, the all other applicable plans sheets.

Utility owner information shall be provided for each line and feature. Underground utilities information shall include surveyed location, size and material information provided by utilities or investigation. Invert elevations and interior dimensions of inlets, manholes, vaults shall be provided. Depth measurement shall be provided at available valves and handholes. Depict all depth measurements or judged depth values on cross section plans.

At-the-surface or aboveground utility features (e.g., fire hydrants, vault covers, utility poles, manholes, valves boxes, pedestals, guy wires, irrigation and other visible utility features) shall be surveyed tied to the project datum.

Prior to the 30% design submittal, the SUE Consultant shall:

• Provide initial SUE investigation, survey, and prepare QL C and lower plans.

• Conduct field reviews to ensure correct utility data and to determine location of any existing utilities not included on maps provided by utility companies, including private irrigation features.

• Prepare 30% SUE plans showing all identified utility features and identify any potential utility conflicts with proposed design.

• Attend the 30% Design Utility Coordination Meeting with the Design Engineer, County, and all known utility agencies affected by the project to determine any necessary utility relocations.

Prior to the 60% design submittal, the SUE Consultant shall:

• Conduct appropriate surface geophysical search for utilities requiring QL B or higher data, including conducting test hole campaign as required for QL A.

• Prepare 60% SUE plans with updated SUE data, tied to project survey datum, and potential utility conflicts with proposed design.

• Attend the 60% Design Utility Coordination Meeting with the Design Engineer, County, and affected utilities to review required utility relocations, discuss ways to mitigate construction impacts, ensure utility designs comply with all utility requirements, and to coordinate relocation schedule.

• Request preliminary relocation plans from affected utilities and review plans for conformance with project plans in coordination with County Project Manager.

Prior to 90% design submittal, the SUE Consultant shall:

• Identify and resolve any remaining conflicts shown on the Utility Conflict Matrix to finalize utility relocation coordination.

• Request final relocation plans from affected utilities and review plans for conformance with project plans in coordination with County Project Manager.

• Prepare updated 90% SUE design plans showing resolution of all possible utility conflicts and include relocation design plans from affected utilities.

Revegetation Testing and Design Using the CDOT Topsoil Testing Procedure, the Storm Water Management Plan designer is required to do a topsoil assessment of all areas within the anticipated limits of disturbance in accordance with the Mesa County Stormwater Management Manual (SWMM). Topsoil samples shall be sent to an accredited lab for analysis. Soil samples shall be reviewed and soil preparation, and any needed amendments, designed for proper revegetation of the site.

Site-appropriate seed mix shall be determined utilizing the Mesa County Design Standards and the SWMM or other approved method. Seeding methods shall consider equipment access and conditions for drill seeding. Hydraulic seeding is the alternative method for areas where drill seeding is not feasible.

2.8 PRELIMINARY DESIGN (30%)

The preliminary design shall be developed to sufficient detail to determine general cut and fill limits, right-of-way and easement requirements, preliminary earthwork quantities, and required structures. The preliminary design shall also be completed to a sufficient level of detail so that Preliminary Opinion of Probable Cost (POPC) can be developed and the satisfaction of pertinent design standards can be demonstrated.

Roadway Design and Roadside Development

• Complete roadway design

• Check horizontal and vertical alignments against all design criteria

• Necessary variances and/or design decisions will be identified with justification and concurrence by Mesa County

• Provide alignments, toes of slopes and pertinent design features

• Identify clear sight triangles

• Include plans showing the horizontal geometry of the various roadway elements for the mainline roadway. The roadway elements shown shall include the edge of pavement, edge of travel way, shoulders, lane stripping, curb & gutter lines, medians, retaining walls, major drainage structures, and guardrails

• Vertical profiles for the mainline roadways and the connecting road shall be developed

• Consultant shall develop 30% design plans at a maximum horizontal scale of 1"=50'.

The consultant should consider larger scale when complexity of readability is marginal for the 11”x17” sheet size. The 30% plans shall be prepared in accordance with the National CAD Standards (NCS) or CDOT drafting and plan preparation standards and shall be developed using AutoCAD Civil 3D, within the last 3 versions.

• The plans shall be 22"x34" in size (to allow for half-sized drawings on 11"x17" to be scaled) and shall at a minimum include the following plan sheets:

Title sheet Typical section sheets (both mainline and intersecting road/access) General notes Plan and profile sheets (including all existing topography, survey alignments, projected alignments, right-of-way and permanent easements required, profile grades, ground line, rough structure notes, and existing utility locations)

Preliminary layout of intersections Preliminary earthwork (plotted cross-sections at critical points with roadway template and existing utility lines at known depths). A Summary of Earthwork Quantities, along with a Bid Schedule including any notes on how quantities are calculated or what the specific bid item covers shall be included in the plan set.

Soil profile and stabilization data Roadway cross-section sheets Demolition and project phasing sheet Signing and striping sheet Details sheet Stormwater Management Plan

Traffic Engineering

• Analyze the proposed design with the traffic projection data supplied by Mesa County

• Recommend the appropriate geometry (i.e., number of lanes, auxiliary lanes, storage lengths, weaving distances, etc.) in accordance with the current version of the Highway Capacity Manual

• The proposed design shall be reviewed to ensure compatibility with existing signing procedures throughout the preliminary roadway design process

• Develop the total ESAL for the design life and submit to the County PM for approval

Roadway Lighting

• Evaluated existing roadway lighting

• Determine fixtures requiring relocation

• Show power sources and connection locations

New Pavement Structure The feasible alternatives of new pavement structure shall be designed using equivalent cost and design life (equivalent uniform annual cost) for the pavement design alternatives.

Drainage Engineering

• Establish drainage basin data: delineate, determine size, waterway geometrics, vegetation cover, land use

• Collect historical data; research flood history and previous designs in the project proximity; and obtain data from other sources as available

• Select a storm frequency and coordinate acceptance with County PM

• Complete hydrological analysis using existing studies and the Mesa County

Stormwater Management Manual (latest edition)

• Accomplish the design of all required drainage structures

• Determine location and crossing alignment. Identify channel centerline by roadway station or coordinates as appropriate

• Determine the allowable headwater

• Assess the degree of sediment and debris problems to be encountered, including abrasion, corrosion and scour

• Type, size, shape and material of the structures

• Prepare preliminary structure cross-sections to determine the elevations, flow lines, slopes and lengths of the structures

• Show the flow quantity on the sections

• Complete the design computations and documentation

• Complete the preliminary drainage report including hydrology analysis, minor structure hydraulic designs, and structure cross-sections

• Prepare other appropriate documents

Bridge Structures

• Review the condition of the existing structure and evaluate existing…