Professional Engineering Services for Refugio Rd Low Water Crossing Over Refugio Creek Alternatives and Design Through 100 PS_E.pdf

COUNTY OF SANTA BARBARA

DEPARTMENT OF PUBLIC WORKS

TRANSPORTATION DIVISION

REQUEST FOR PROPOSALS

FOR

PROFESSIONAL DESIGN SERVICES

FOR

Replacement of four Low Water Crossing with Bridges

Refugio Creek @ Refugio Road Low Water Crossing at MP 3.0 (00L0063) County Project No. 862363 & Federal Project No. BRLO-NBIL (548)

Refugio Creek @ Refugio Road Low Water Crossing at MP 3.1 (00L0064) County Project No. 862364 & Federal Project No. BRLO-NBIL (551)

Refugio Creek @ Refugio Road Low Water Crossing at MP 3.2 (00L0065) County Project No. 862365 & Federal Project No. BRLO-NBIL (549)

Refugio Creek @ Refugio Road Low Water Crossing at MP 3.3 (00L0066) County Project No. 862366 & Federal Project No. BRLO-NBIL (550)

COUNTY PROJECT NO. 862363

Solicitation No. SIC-01

June 24, 2026

County of Santa Barbara Public Works Department – Transportation

123 East Anapamu Street Santa Barbara, CA 93101

(805) 568-3094

County Project No. 862364 24 June, 2026 RFP – Page 3 of 67

TABLE OF CONTENTS

1 Request for Proposals Summary

2 Project Description and Purpose

3 Scope of Work and Project Deliverables

4 Proposal Submittal

5 Proposal Evaluation

6 General Terms and Conditions

7 Protest Procedures and Dispute Resolution Process

Attachment A – County Standard Agreement

Attachment B – Contractor Information sheet

Attachment C – Proposer checklist

County Project No. 862363 24 June 2026 RFP – Page 4 of 67

1 REQUEST FOR PROPOSALS SUMMARY

1.1 NOTICE TO PROPOSERS

Request for Proposals (RFP) project information summary.

Issue Date Wednesday, 06/24/2026

Due Date and Time for Proposals

Thursday, 08/06/2026 by 2:00 PM

Agency Contact Person

Alma D Garcia, Project Manager, a.garcia@countyofsb.org

(805) 803-8762

Project Name Professional Engineering Services for Refugio Rd Low Water Crossing Over Refugio Creek Alternatives and Design Through 100% PS&E

Project Number

County Project No. 862363, Federal-Aid No. NBIL-5951 (548) County Project No. 862364, Federal-Aid No. NBIL-5951 (551) County Project No. 862365, Federal-Aid No. NBIL-5951 (549) County Project No. 862366, Federal-Aid No. NBIL-5951 (550)

Work Description Type Section Reports, Plan, Specifications and Estimates, Geotechnical, Hydraulic, Environmental Permitting Support, and ROW support services

RFP Website https://pbsystem.planetbids.com/portal/43874/portal-home

Inquiries Deadline All RFP questions are due Friday, 07/31/26 by 2:00 PM and must be submitted via PlanetBids. Confirmation of receipt will be provided. RFP questions and answers will be posted on the County PlanetBids website.

RFP Proposal Submittal

Electronic submittals only.

Pre-Proposal Conference

An optional pre-proposal virtual conference will be held on July 09, 2026, at 11:00 AM. Attendance is encouraged but not mandatory. The conference will provide an overview of the project and procurement requirements. The meeting link and access instructions are available through PlanetBids.

Cost Proposal Submittal

Separate from the technical proposal; submit a password protected cost proposal.

RFP Page Limit

The cumulative total pages for the proposal must not exceed 25 pages (minimum 12 font size, single-spaced). Page count limit is exclusive of cover letter, blank pages or tabs, resumes, and required forms (i.e. Attachment A Agreement Cover Sheet, Attachment B Consultant Information Sheet, LAPM, etc.).

Funding Source(s) Federal, Highway Bridge Program (HBP)

Department of Industrial Relations

(DIR)

This project is subject to compliance monitoring and enforcement by the California DIR. Prevailing wages are required on this Proposal. The State DIR Director determines the general prevailing wage rates which can be obtained at the DIR website at https://www.dir.ca.gov/.

Federal minimum wage rates for federally funded task orders under this Contract are determined by the United States Secretary of Labor and are available at https://www.wdol.gov/. Copies are also available at the office of the Department of Public Works – Engineering Division, 123 E Anapamu Street, Santa Barbara, CA 93101 If minimum wage rates as determined by the United States Secretary of Labor differs from the general prevailing wage rates determined by the Director of the California Department of Industrial Relations for similar classifications of labor, the Contractor and subcontractors must not pay less than the higher wage rate.

All times are 2:00 PM unless otherwise noted. Proposals must be received prior to or on the date due.

Proposals received after the due date and time or received at the wrong location/email address are considered nonresponsive and shall be rejected.

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1.2 PROCUREMENT AND PROJECT SCHEDULE TABLE

The schedule set forth herein is tentative and subject to change. The County reserves the right, at its sole discretion, to modify any date or deadline in this solicitation process without prior notice.

Description Date Time (If

Applicable)

Request for Proposal Issue Date 06/23/2026

Inquiries Deadline 07/31/2026 2:00 PM

Due Date and Time for Proposals (Closing Deadline) 08/06/2026 2:00 PM

Review Completion 08/27/2026

Consultant Selection (Notification) 08/31/2026

Consultant Negotiations Begin 09/08/2026

Consultant Negotiations End 09/11/2026

Award Date (By Board or Purchasing Agent) 10/27/2026

Notice to Proceed/Contract Execution 10/29/2026

Start Date 11/03/2026

Final Invoice/End Date 06/30/2029

Note that no time has been included in the schedule above for CONSULTANT interviews. The County may, at its sole discretion, elect to conduct interviews as part of the evaluation process. However, the County reserves the right to award a contract based solely on the written proposals received, without conducting interviews.

County Project No. 862363 24 June 2026 RFP – Page 6 of 67

2 PROJECT DESCRIPTION AND PURPOSE

2.1 ORGANIZATION

The County of Santa Barbara (“COUNTY”), acting as the Lead Agency for the Refugio Road Low Water Crossing Bridge Replacement Project (“PROJECT”), is soliciting proposals from qualified professional consulting firms (“CONSULTANT”) to provide comprehensive engineering, environmental, and technical services necessary to advance the PROJECT through environmental clearance, design approval, permitting, and construction readiness.

2.2 PURPOSE AND NEED

The purpose of this Request for Proposals (RFP) is to retain a qualified CONSULTANT to provide professional services required for the planning, environmental permitting, design, and delivery of the PROJECT. The selected CONSULTANT will provide the expertise, staffing, and resources necessary to prepare all required studies, analyses, reports, and design documents in accordance with applicable federal, state, and local requirements.

To support project delivery, the CONSULTANT must provide all necessary technical, environmental, and engineering services, including but not limited to environmental documentation and permitting support, surveying, geotechnical investigations and reports, hydraulic and hydrologic analyses, preparation of Type Selection Reports, roadway, bridge and structural design, and development of final Plans, Specifications, and Estimates (PS&E) and Right-of-Way acquisition. The CONSULTANT must also prepare all required engineering design and analyses, calculations, quantities, technical specifications, and supporting documentation necessary to support agency approvals, satisfy funding requirements, and deliver a fully developed, construction-ready project.

2.3 PROJECT BACKGROUND

Refugio Road is a north-south, two-lane rural roadway in Santa Barbara County. The roadway begins at its intersection with US Highway 101 and extends approximately 7 miles north to Camino Cielo Road within the Los Padres National Forest. Refugio Road serves as a vital access route for local residents, emergency services, and agricultural operations in the rural coastal region.

Along this segment, Refugio Road crosses Refugio Creek at four locations via existing at-grade low water crossings (LWCs), located at mileposts 3.0, 3.1, 3.2, and 3.3. These crossings consist of pipe culverts with concrete aprons and are prone to frequent flooding and overtopping during storm events. As a result, storm events often lead to road closures and limited access for emergency responders and maintenance crews.

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2.4 PROPOSED PROJECT IMPROVEMENTS

The County anticipates replacing the low water crossings with engineered single-span pre-cast bridge structures or pre-cast arch culverts. These improvements will address existing hydraulic limitations, meet 100-year storm (Q100) design standards, and provide long-term infrastructure benefits while accommodating site-specific conditions such as limited right-of-way, steep terrain, and proximity to adjacent private properties, including a guest ranch and associated facilities.

The proposed structures are anticipated to range from approximately 36 to 70 feet in length, depending on site-specific conditions and the selected crossing alternative. Project development must consider hydraulic performance, environmental requirements, roadway geometrics, right-of-way constraints, utility impacts, constructability, and maintenance of traffic to support the evaluation and selection of the preferred alternative.

The table below provides a summary of the existing conditions, site constraints, and key design considerations associated with each crossing location.

County Project No. 862363 24 June 2026 RFP – Page 8 of 67

Category Crossing 3: MP 3.0

(00L0063) Crossing 4: MP 3.1

(00L0064) Crossing 5: MP 3.2

(00L0065) Crossing 6 MP 3.3

(00L0066)

Existing Structure

3-barrel, 36" CMP culverts with concrete aprons

3-barrel, 36" CMP culverts with concrete aprons

3-barrel, 36" CMP culverts with concrete aprons

2-barrel, 48" CMP culverts with concrete aprons

Creek/Valley Context

Narrow valley, steep rock walls, limited space

Similar narrow valley section

Slightly wider; some room for alignment shift; guest ranch north of creek

Minor alignment shift possible; guest ranch parking on south side

Proposed Structure Type

Single-span pre-cast bridge or arch culvert

Single-span pre-cast bridge or arch culvert

Single-span pre-cast bridge or arch culvert

Single-span pre-cast bridge or arch culvert

Profile Adjustments profile raise to meet Q100 profile raise to meet Q100 profile raise to meet Q100 profile raise to meet Q100

Proposed Bridge Dimensions

60 ft long ×20 ft wide 70 ft long × 20 ft wide 36 ft long × 20 ft wide 40 ft long × 20 ft wide

Location 34.506905, - 120.064290

34.507767, - 120.064735

34.509469, - 120.066011

34.509330, - 120.067527

2.5 PREVIOUS WORK CONDUCTED TO DATE

To date, the following preliminary items have been performed, or are currently being performed for this project:

Topographic mapping of Refugio Rd. from Calle Real to the West of Camino Cielo intersection.

Hydrology (West CONSULTANTs)

County Project No. 862363 24 June 2026 RFP – Page 9 of 67

3 SCOPE OF WORK AND PROJECT DELIVERABLES

3.1 DESCRIPTION OF WORK

The CONSULTANT must provide complete roadway and bridge engineering services and structures necessary for the successful delivery of the PROJECT. Services must include all planning, coordination, technical studies, engineering design, environmental support, permitting support, and right-of-way engineering services required to advance the Project from project initiation through final design and ready-to-advertise (PS&E) status. The CONSULTANT must furnish all labor, subconsultants, equipment, technical expertise, coordination, analyses, reports, calculations, exhibits, and professional services necessary to complete the PROJECT. The anticipated scope of services includes, but is not limited to, the following:

Project management, scheduling, coordination, progress reporting, and quality assurance/quality control

(QA/QC)

Preparation of bridge engineering studies, alternatives analyses, and Structural Type Selection Reports Bridge structural analysis, bridge design calculations, structural calculations, seismic analysis, load evaluation, and independent design checks Preparation and development of 35% plans and 65%, 95%, and 100% Plans, Specifications, and

Estimates (PS&E) Support County in preparing documentation, exhibits, and presentations for public meetings, as well as supporting outreach activities, interagency coordination, and stakeholder engagement.

Utility identification and coordination, including preparation of Utility Letters A and B, utility conflict analysis, and utility relocation coordination Right-of-way engineering support services, exhibits, mapping, and coordination Completion of all required environmental studies, technical investigations, documentation, and permit support necessary to satisfy NEPA, CEQA, and regulatory agency requirements Perform geotechnical investigations and engineering analyses, and prepare recommendations and technical reports to support project development, environmental documentation, design, and construction.

Perform hydrologic and hydraulic analyses to evaluate drainage conditions, develop design criteria and drainage recommendations, and prepare supporting technical reports for project development, environmental clearance, permitting, and design.

Topographic surveying, mapping, control surveys, and preparation of base mapping for design and right-of-way purposes.

Support advertisement activities, including preparation of responses to agency comments, plan revisions and supporting documents.

The CONSULTANT must coordinate closely with the COUNTY, Caltrans, utility owners, regulatory agencies, and other stakeholders throughout the duration of the PROJECT to ensure timely delivery of all required documents, technical studies, and design submittals. Proposals must outline any additional tasks or considerations anticipated based on the information provided, including regulatory, technical, or site-specific challenges that may affect project delivery schedule.

3.2 TASKS AND DELIVERABLES

The scope of work will be broken down into the following tasks and associated deliverables:

Project Management: (Tasks 1,2,3,4,5,6)

Structure and Roadway Design: (Tasks 7,8,9,10,13,16,17,18,19,21)

Environment and Permitting (Tasks 11)

Public Outreach: (Task 15)

Utility Coordination: (Task 12)

Right of Way Coordination: (Tasks 14,20)

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The Scope of Work will be broken down into the following tasks.

Phase I Tasks:

Task 1 Project Initiation Task 2 Project Management and Team Leadership and Quality Control Task 3 Surveying Task 4 Hydraulic Study and Report Task 5 Hydrology and Hydrologic Analysis Task 6 Geotechnical Studies and Investigations Task 7 Type Selection Reports and Type Selection Meeting Task 8 Roadway/Civil Engineering Task 9 Geometric Design Plan Task 10 Preliminary Design - 35% preliminary design – Bridge/Structures/Roadway Task 11 NEPA and CEQA Environmental Documents Task 12 Utility Conflict Determination/Letter A Task 13 Final Design Unchecked - 65% PS&E - Bridge/Structure/Roadway Task 14 Right of Way Needs Task 15 Public Notice and Meetings Task 16 Independent Bridge Design check -Bridge

Phase II Task:

Task 17 Final Design Checked -95% PS&E – Bridge/Structure/Roadway Task 18 Final Design Checked -100% PS&E – Bridge/Structure/Roadway Task 19 Resident Engineer Pending File Task 20 Right of Way Acquisition and Final Utility Coordination/Letter B

Phase III Task

Task 21 Contract Bidding Support

Phase 1 – Preliminary Engineering and Environmental Approval includes the following major tasks and associated deliverables:

Task 1 – Project Initiation and Site Visit

CONSULTANT must attend 1 Project Development Team (PDT) meeting in person at 620 Foster, Santa Maria, CA. to discuss the needs of the PROJECT. CONSULTANT must identify potential design conflicts and/or obstacles and identify innovative concepts to be explored. CONSULTANT must also conduct site visits to become familiar with the project.

Task 1 Deliverables

- Site visit

- PDT Kickoff Meeting

- Discovery Memo

Task 2 – Project Management, Team Leadership and Quality Control

CONSULTANT must provide a Project Manager who will be generally responsible for this contract, including any proposed subconsultants, and who will be the primary point of contact to the COUNTY. The Project Manager must coordinate all necessary work between proposed subconsultants of this contract. Within four (4) weeks of Authorization to Proceed, the Project Manager must submit a detailed schedule for the PROJECT, including all major milestones, to the COUNTY for review and comment. The Project Manager must submit an updated PROJECT monthly schedule which will include the percentage complete for each outstanding task and PROJECT milestones. The Project Manager must submit a Quality Assurance/Quality Control program, outlining a hierarchical flowchart for the CONSULTANT, as well as the individuals responsible for each PROJECT task. The Project Manager must be responsible for maintaining the project schedule and ensuring QA/QC procedures are

County Project No. 862363 24 June 2026 RFP – Page 11 of 67 followed by submitting monthly progress reports to the COUNTY. Each progress report must contain an explanation of tasks accomplished for the month, deliverables completed/submitted, anticipated tasks for the next month, and any pending issues or impacts on schedules. The CONSULTANT must submit monthly invoices that indicate: total contract amount, total costs captured for the reporting period (actual and percentage), and total costs incurred to date (actual and percentage) for each assigned task. Each invoice must contain the COUNTY provided specific contract number (CN), county project name and number, contact responsible for the CONSULTANT, specific dates indicating the period of time services are being claimed on the invoice, and a brief description of services provided over the invoice period. As this Project will have 4 separate federal project numbers associated with each LWC location, the CONSULTANT and subconsultants must segregate and track all costs by each specific LWC location. The Project Manager will also organize and conduct Project Development Team (PDT) meetings monthly or as otherwise directed by the COUNTY.

The CONSULTANT must be responsible for providing all professional services necessary to support the preparation of the Type Selection Reports (TSRs) and subsequent structure design, environmental permitting, and right of way deliverables. Such services may be performed by the CONSULTANT's in-house staff and/or qualified subconsultants. If subconsultants are utilized, the CONSULTANT must be responsible for identifying, procuring, and managing qualified subconsultants to provide services including, but not limited to, hydraulic, geotechnical, surveying, and right of way support. All work performed by the and any subconsultants must conform to current Caltrans standards, manuals, policies, and procedures.

Prepare and manage subconsultant agreements, scopes, and schedules to ensure timely delivery of required data and analyses.

Task 2 Deliverables

Provide overall project management and administration Prepare and maintain project schedules and budgets Conduct coordination meetings with the COUNTY, Caltrans, utilities, agencies, and stakeholders Prepare PDT virtual meeting agendas, meeting minutes, and progress reports (assume 24) Implement and maintain Quality Assurance/Quality Control (QA/QC) procedures Coordinate subconsultant activities and deliverables Monthly Invoicing segregated and tracked by specific federal project number assigned to each LWC location.

Field kick-off and TSR review Meetings (in Person, assume 2)

Task 3 Land Surveying

Obtain land surveying services required to support the design and development of the PROJECT. The requested work includes topographic surveying, hydraulic-support surveying, and right-of-way (ROW) and property surveying necessary for engineering design, environmental documentation, and ROW acquisition. The survey must include, but not be limited to, establishment of horizontal and vertical control, detailed topographic field surveys of roadway approaches, stream channels, and floodplains, as well as ROW boundary determination and analysis of affected parcels.

The PROJECT corridor has previously been surveyed, and a Record of Survey was completed establishing a consistent 40-foot-wide road right-of-way, extending 20 feet on each side of the newly established centerline (CL).

The CONSULTANT must review existing survey information and records prior to determining the need for any additional field surveying.

Task 3 Deliverables

Review memo CAD files Field notes and sketches Photos of key features and control points Monument research ROW research Legal and visual descriptions (assume 4)

County Project No. 862363 24 June 2026 RFP – Page 12 of 67

Task 4 – Hydraulic Study and Report

Complete hydraulic analysis for the proposed bridge replacement, including data collection and field assessment, hydraulic modeling of existing and proposed conditions, and calculations of flow capacity, water surface elevations, and scour potential. Deliver a comprehensive hydraulic report documenting methodology, results, recommendations for bridge sizing and design, and compliance with applicable regulations, along with supporting figures, tables, and modeling files suitable for design and permitting purposes. Studies and reports must comply with local, state, and federal regulations.

Task 4 Requirements

Proposed conveyance systems including culverts, ditches, channels, and inlets.

Size hydraulic structures using approved hydraulic methods.

Evaluate inlet/outlet control conditions.

Perform backwater, hydraulic capacity, and flow conveyance analyses where applicable. Evaluate channel hydraulics and geomorphic conditions, including potential upstream and downstream bank erosion and channel instability associated with channel sinuosity.

Assess outlet protection, scour potential, and energy dissipation needs.

Verify that proposed drainage systems do not create adverse upstream or downstream impacts.

Coordinate hydraulic design with roadway geometry, ROW constraints, and geotechnical recommendations.

Task 4 Deliverables

Hydraulic Design Report (PDF format) Culvert and drainage structure sizing calculations Hydraulic modeling outputs (e.g., HEC-RAS or equivalent, if used) Drainage structure summary tables (culverts, ditches, channels) Outlet protection and scour analysis documentation Hydraulic design exhibits and detail sketches Electronic calculation files and model data

Task 5 –Hydrology Studies and Report

Perform hydrologic analysis to determine design flows required for the sizing in support of TSRs and to support environmental clearance, Plans, Specifications & Estimate (PS&E) development, and permitting for the Project.

All work shall be performed in accordance with applicable standards, including the California Department of Transportation Highway Design Manual (HDM), the Caltrans Hydrology Manual, and the California Department of Transportation Local Assistance Procedures Manual, as applicable for federally funded projects.

A hydrology model estimating design flows at each crossing is available and will be provided to the CONSULTANT for review. The CONSULTANT must evaluate the existing analysis and determine whether updates are warranted based on current watershed conditions, including the effects of recent wildfire events.

Task 5 Requirements:

Develop hydrologic design criteria appropriate to the PROJECT setting and governing standards.

Delineate watershed boundaries and drainage basins contributing to the Project area.

Identify existing and proposed flow paths and drainage conditions.

Perform hydrologic modeling and calculations using approved methods.

Develop peak design flows for drainage facilities.

Evaluate hydrologic impacts between existing and proposed conditions, including potential upstream and downstream effects.

Evaluate stormwater quality requirements and incorporate appropriate treatment BMPs in accordance with applicable regulatory requirements.

Coordinate hydrologic assumptions and results with drainage design, environmental documentation, and permitting requirements.

County Project No. 862363 24 June 2026 RFP – Page 13 of 67

Task 5 Deliverables

Hydrology Report (1 electronic version, PDF format) Prepared to support Advanced Planning Studies, including methodology, assumptions, calculations summary, and results.

Watershed Delineation and Drainage Area Maps Including existing and proposed condition basin boundaries and flow paths.

Hydrologic Calculations and Supporting Files Calculation files, model inputs/outputs, and supporting documentation (electronic format).

Design Criteria, Exhibits, and Summary Tables Including storm frequency selection, runoff parameters, basin characteristics, and peak flow summaries.

Hydrologic Modeling and Analysis Outputs Results from approved hydrologic methods/models used to generate design flows.

Hydrologic Impact Evaluation Assessment of changes in runoff patterns, potential downstream impacts, and identification of flood or conveyance constraints.

Abutment and Pier Scour Analysis Hydraulic analysis of contraction, local, and long-term scour at bridge abutments and piers using approved methodologies, including computed scour depths, design parameters, assumptions, and supporting calculations.

Stormwater Treatment BMP Documentation Documentation of applicable post-construction stormwater treatment Best Management Practices (BMPs), including evaluation of regulatory requirements, selected BMP type(s), and supporting design basis.

Task 6 – Geotechnical Studies and Investigations

Provide a complete geotechnical investigation for the proposed bridge replacements, roadway improvements, retaining walls, embankment slopes, and rock excavation, including subsurface exploration, contacting Underground Services Alert (USA), laboratory soil and rock testing, seismic evaluation, scour potential, corrosion resistance, and geologic site characterization. Deliver geotechnical investigation results and recommendations in a Foundation Report summarizing findings, foundation and abutment design recommendations, earthwork guidance, and construction considerations, with supporting boring logs, test results, and data suitable for design and permitting purposes, as required by the current Caltrans Geotechnical Manual and all relevant sub-manuals.

Task 5 Deliverables

Structures Preliminary Geotechnical Report (to support Advanced Planning Studies) Preliminary Foundation Report (to support Type Selection) Foundation Report (to support the design and construction of the PROJECT) Log of Test Borings (for Foundation Report and PROJECT bid documents) Geotechnical Recommendations for Hydraulic Analysis (Scour modeling and analysis) Structure Section Recommendations

Task 6 Requirements:

All reports must be prepared as required by the current Caltrans Foundation Reports for Bridges and amended to adhere to updated requirements implemented during the design schedule of the PROJECT.

Each Bridge will require a separate Foundation Report, as required by Caltrans Foundation Reports for Bridges. Structures Preliminary Geotechnical Report may be prepared to include all bridges.

Subsurface investigation data: borehole and testing pit logs. Prepare Log of Test Borings for inclusion in the Foundation Reports and in Final PROJECT bid documents

Laboratory Test Results: Soil classification, moisture content, density, strength, and consolidation test, corrosion evaluation, scour and erosion testing

Evaluation of existing and proposed embankment and slopes for stability, required excavation/fill methods, potential use of excavated materials in the PROJECT construction, use of existing river rock as rock slope protection, temporary slope cut/fill requirements, areas of temporary shoring requirements.

Analysis: Evaluation of soil bearing capacity, settlement, slope stability, and foundation support, recommendations for bridge abutments, and PROJECT retaining structures summary of field and lab results, design recommendations for foundations, earthworks and construction considerations; scour and erosion assessment required for hydraulics analysis and reports

Supporting documentation required includes at a minimum: all logs, charts, tables, and data files to

County Project No. 862363 24 June 2026 RFP – Page 14 of 67 support design, permitting and construction recommendations.

All soil and rock descriptions must be as required by the current version of the Caltrans Soil and Rock

Logging, Classification, and Presentation Manual.

Log of Test Borings must be prepared as required in the current version of the Caltrans Soil and Rock

Logging, Classification, and Presentation manual, and adherence to current version of Caltrans Standard Plans.

Task 7 – Type Selection Reports and Type Selection Meeting

Prepare and submit a Type Selection Report (TSR) for each bridge structure for review and approval by Caltrans.

The report must include preliminary engineering layouts of the PROJECT to an approximate 35% level of completion and summarize the structural type alternatives considered, evaluation criteria, and justification for the recommended structure type. Include key supporting information such as preliminary geometry, bridge span and width, geometric alignment of the roadway, vertical and horizontal profiles, foundation considerations, seismic and geotechnical factors, constructability, proposed detour alignments (if applicable), preliminary foundation concepts, preliminary slope stability considerations, 35% design cost estimate/comparison, and draft construction schedule impacts. The TSR must include discussion comparing cost effectiveness of items including but not limited to: span lengths, span configurations, hinge locations, superstructure depth, profile grade, and drainage, as well as any impacts to private property. No further structure design work shall be performed until written approval of the structure type is received from Caltrans.

Task 7 Deliverables

Type Selection Report (TSR) (4 total)– both draft and final version Participation in Type Selection Report Meeting with Caltrans Responses to Caltrans’ comments on the draft Type Selection Report Type Selection Report meeting minutes

Task 8 –Roadway/Civil Engineering

The CONSULTANT must provide professional roadway and civil engineering services for the design of roadway improvements associated with PROJECT. The work includes geometric roadway design, grading, drainage systems, erosion control, and preparation of Plans, Specifications, and Engineer’s Estimate (PS&E) for the roadway and civil components of the project.

All services must be performed in accordance with applicable Caltrans Local Assistance Procedures Manual (LAPM), Caltrans Highway Design Manual (HDM), Caltrans Standard Plans and Specifications, and applicable AASHTO guidelines.

Task 8 Deliverables

Base Mapping & Existing Conditions Plans Roadway Geometry Plans (Alignment, Profile, Sections) Grading & Earthwork Plans Drainage Design Report & Plans Erosion Control / BMP Plans Traffic Handling & Staging Plans PS&E Submittals (65%, 95%, 100%) Engineer’s Estimate (civil portion)

The roadway/civil plan sheet set is anticipated to include but is not limited to the following sheets:

1. TITLE SHEET

2. TYPICAL SECTIONS

3. PROJECT CONTROL

4. LAYOUT PLAN AND PROFILE

5. CONSTRUCITON DETAILS

6. SUPER ELEVATION DIAGRAM

7. PAVEMENT DELINEATION PLAN

8. DEMOLITION PLAN

9. GRADING PLAN

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10. STAGED CONSTRUCTION

11. CONSTRUCTION AREA SIGNS

12. RIGHT-OF-WAY/EASEMENTS

Task 9 –Geometric Design Plan

The CONSULTANT must develop a Geometric Design Plan that defines the horizontal, vertical, and cross-sectional geometry of the proposed structure and its integration with the adjacent roadway. The work includes analyzing existing conditions, defining the alignment, establishing deck elevations, determining span layout, and ensuring all required clearances are met. The geometric design plan must serve as the foundational reference for structural design, permitting, coordination with stakeholders, and subsequent plan development.

Task 9 Deliverables

4 Geometric Design Plan (for each location) CAD/design files Technical memorandum QA/QC checklist and review comments addressed

Task 10 – 35% Preliminary Design – Roadway, Bridge, and Structures

Based on the approved Type Selection Report (TSR), Geometric Design approval, geotechnical recommendations, hydrologic and hydraulic analyses, and review comments received from the COUNTY and Caltrans, the CONSULTANT shall prepare 35% preliminary roadway, bridge, and structural designs for the

PROJECT.

The CONSULTANT shall develop preliminary design calculations, layouts, typical sections, and supporting engineering analyses for the proposed bridge and associated roadway improvements. The CONSULTANT shall also prepare preliminary designs and supporting calculations for incidental structures and earth retention features associated with the PROJECT, including but not limited to retaining walls, embankment slopes, rock cuts, drainage structures, slope stabilization measures, and other appurtenant structural elements

Task 10 Deliverables

Preliminary bridge and structural design calculations (1 electronic copy, PDF version) Preliminary bridge layouts, general plans, typical sections, and structure type recommendations (1 electronic copy) 35% roadway design plans, profiles, and typical sections (1 electronic copy, PDF version) Preliminary design calculations and conceptual layouts for incidental structures, including retaining walls, drainage structures, slope stabilization measures, embankment slopes, and rock cuts (1 electronic copy, PDF version)

Supporting sketches, exhibits, and engineering analyses necessary to document the preliminary design recommendations (1 electronic copy, PDF version)

Task 11 – NEPA and CEQA Environmental Documents

The CONSULTANT must provide environmental support services necessary to identify, assess, and document environmental constraints, impacts, and permit requirements associated with the proposed project. Work must comply with all applicable Caltrans, NEPA, and CEQA procedures, including the most current Caltrans Standard Environmental Reference (SER) and Environmental Handbook guidelines.

This Task will likely include the following required studies, reports and submittals:

Natural Environment Study Location Hydraulic Study Biological Assessment - National Marine Fisheries Service Biological Assessment – United States Fish and Widlife Service Initial Study/Mitigated Negative Declaration or EIR Wetlands Assessment

County Project No. 862363 24 June 2026 RFP – Page 16 of 67

Historic Property Survey Report (HPSR) Historic Resource Evaluation Report (HRER) Archaeological Survey Report (ASR) Area of Potential Effects (APE) Map *Potential 4f Report (if historic resources are identified) Traffic memo Noise memo Water quality memo Relocation impact memo Land use memo Environmental Commitment Record (ECR) Permit package prior to construction Permitting support-1602 LSAA, Nationwide 14 USACE, 401 Certification RWQCB ITP/HCP for Southern Steelhead Trout

Task 11 Deliverables

- All necessary memos, assessments, studies, and permits

Task 12 – Initial Utility Conflict Determination

CONSULTANT must coordinate, prepare, and submit all utility letters on behalf of the COUNTY. This work includes, but is not limited to, researching potentially affected utilities, obtaining atlas maps, and preparing any associated maps or plans on behalf of the COUNTY. Deliverables must be reviewed and executed by the COUNTY prior to being sent out by the CONSULTANT. All utility letters, notices, and coordination must conform to the current version of the Caltrans Right of Way Manual and the Local Assistance Procedures Manual.

Task 12 Deliverables

Utility Letter A, per affected utility (1 WORD version and 1 PDF version) Utility Letter B, per affected utility (1 WORD version and 1 PDF version) Existing Utility Plan (1 PDF version)

Task 13 – Final Design Uncheck - 65% Plans, Specifications, and Estimate

CONSULTANT must prepare a full set of construction drawings and details for all bridge, roadway, and incidental structure related components of the PROJECT for COUNTY review and comment once the design is approximately 65% complete. The CONSULTANT must prepare construction specifications for all bridge, roadway/civil, and structure related components of the PROJECT, formatted in accordance with the COUNTY standard technical special provisions boilerplate template, to be submitted with the plans at approximately 65% final design completion for COUNTY review and comment. The CONSULTANT must prepare and submit a construction cost estimate for all bid items associated with all bridge, roadway, and structure components of the PROJECT, including all notes, assumptions, and preliminary quantity calculations. The estimate shall be prepared in the Caltrans standard format using the County template and submitted at approximately 65% final design completion for COUNTY review and comment. In conjunction with the estimate, the CONSULTANT must prepare a full Bid Items List in compliance with the Caltrans standard format, to include all items of work associated with the construction of all bridge, roadway, and structure related components of the PROJECT. All calculations shall be signed and stamped by an engineer registered in the state of California and will include all notes and assumptions.

The CONSULTANT shall identify proposed deviations from applicable design standards and prepare Design Exception documentation in accordance with applicable Caltrans policies and procedures. The CONSULTANT shall evaluate the operational, safety, environmental, right-of-way, and cost implications of the proposed exception and provide supporting engineering analyses and justification.

The CONSULTANT shall coordinate with the COUNTY, Caltrans, and other stakeholders as necessary to obtain review and approval of the Design Exception request.

County Project No. 862363 24 June 2026 RFP – Page 17 of 67

The 65% submittal must include Title Sheet, Demolition, Typical Sections, Tree Removal and Trimming, Project Control, Layouts, Profiles, Construction Details, Diversion and Dewatering Plan, Drainage Plans, Utility Plans and Details, Traffic Handling, Stage Construction, Erosion Control/Water Pollution Control Plans, Pavement Delineation, possible Detour Plans (including temporary bridges, in necessary), Sign Plans, and any other required drawing sheets. The structure plan sheets will include General Plan, Foundation Plan, Cross-Sections, Typical Section, miscellaneous details, and Log of Test Borings.

CONSULTANT will identify temporary easements and/or permanent right-of-way modifications to construct the Project.

The bridge design will be in accordance with the AASHTO LRFD Specifications with Caltrans amendments and applicable sections of the Bridge Memos to Designers and Bridge Design Aids manuals. The design will meet County, Caltrans, FHWA, and AASHTO standards in effect at the time the design occurs.

Seismic design will be performed in accordance with the applicable edition of the Caltrans Seismic Design Criteria. Detailing of plans will be in accordance with Caltrans Design Details Manual. Both the design and detailing will be based on the use of the current Caltrans Standard Plans and Standard Specifications.

Design mustl include details for traffic control plans in accordance with the Caltrans Manual of Uniform Traffic Control Devices.

The CONSULTANT must prepare Design Exception Fact Sheet(s) (DEFS) in accordance with applicable Caltrans policies and procedures. Supporting documentation shall include, at a minimum, engineering analyses and technical justifications, exhibits, figures, plan sheets, traffic and safety evaluations, operational assessments, cost analyses, alternatives considered, and responses to agency review comments necessary to obtain approval of the proposed design exception(s). Assume up to 3 design exceptions.

Task 13 Deliverables

65% Bridge, Structure, and Roadway Plans, (1 electronic full-size PDF (22”x34”), 1 electronic 1 half-size PDF, 1 Civil 3D files)

Response to 35% review comments log.

PROJECT Construction Specifications (1 electronic version in MS Word format) Engineer’s Estimate (1 electronic version in Excel format) Bid Item List (1 electronic version in Excel format) Design Exceptions Fact Sheet (DEFS) (1 electronic version in MS Word format)

The bridge plan sheet set is anticipated to include but is not limited to the following sheets:

1. GENERAL PLANS

2. INDEX TO PLANS

3. DECK CONTOURS

4. FOUNDATION PLAN

5. ABUTMENT 1 LAYOUT

6. ABUTMENT 2 LAYOUT

7. ABUTMENT DETAILS NO. 1

8. ABUTMENT DETAILS NO. 2

9. ABUTMENT DETAILS NO. 3

10. TYPICAL SECTION

11. GIRDER LAYOUT

12. STRUCTURE APPROACH DRAINAGE DETAILS

13. STRUCTURE APPROACH TYPE EQ(10)

14. RETAINING WALL DETAILS NO. 1

15. RETAINING WALL DETAILS NO. 2

16. RETAINING WALL DETAILS NO. 3

17. TUBULAR BICYCLE RAILING DETAILS

18. LOG OF TEST BORINGS

Task 14 – Right of Way Investigation

The CONSULTANT must perform preliminary right-of-way investigations to support project planning, environmental studies, preliminary engineering, and future right-of-way activities.

County Project No. 862363 24 June 2026 RFP – Page 18 of 67

Task 14 Requirements:

The CONSULTANT must conduct preliminary title research of properties potentially affected by the PROJECT and complete right-of-way investigations necessary to support project planning, preliminary engineering, environmental documentation, and right-of-way planning activities. The CONSULTANT shall identify property ownership, easements, access rights, encumbrances, and other constraints that may affect project development and future right-of-way acquisition. The CONSULTANT must support preparation of applicable LAPM right-of-way documentation, including information required for preliminary engineering right-of-way evaluations.

Task 14 Deliverables

Preliminary Title Research Memorandum (electronic format) Property Ownership and Encumbrance Summary Preliminary Right-of-Way Impact Assessment Parcel Maps and Right-of-Way Exhibits Affected Property Inventory and Easement Summary Supporting documentation for project planning, environmental studies, and future right-of-way acquisition activities

Task 15 – Public Notice and Meetings

The CONSULTANT must support the COUNTY's public outreach and stakeholder coordination efforts in accordance with applicable Caltrans and COUNTY processes and requirements. The CONSULTANT is to be responsible for identifying, contacting, and notifying COUNTY of affected stakeholders, including, but not limited to, residents, property owners, businesses, utility providers, schools, and emergency service providers.

The CONSULTANT must assist the COUNTY with stakeholder outreach activities by preparing meeting materials, exhibits, presentations, and supporting documentation. The CONSULTANT must prepare for, organize, and participate in a minimum of up to two (2) public outreach meetings for the PROJECT. Services must include preparation of meeting agendas, presentation materials, exhibits (electronic and hard copy, as required), attendance at meetings, documentation of comments received, and preparation of meeting minutes and follow-up materials.

Task 15 Deliverables

Public Notices, as required (1 electronic version, each) Public Outreach Meeting agenda and minutes (1 electronic version in WORD, each) Public Outreach Meeting presentation (1 electronic version in PowerPoint, each) Public Outreach Meeting exhibits (24”x36” minimum, mounted on rigid board, each) Conduct Public Outreach Meeting (2 total)

Phase 2 Final Design and Right of Way Coordination includes the following major tasks and associated deliverables:

The COUNTY will notify the CONSULTANT in writing when Phase II services are authorized to proceed. No work shall be performed by the CONSULTANT on Phase II tasks prior to receipt of written authorization from the

COUNTY.

Task 16 Independent Bridge Check

CONSULTANT must perform an independent design check of the bridge structure and associated structural elements prior to submission of the 95% Draft Plans, Specifications, and Estimate (PS&E). The independent design check shall be performed by a qualified Professional Engineer who was not directly responsible for preparation of the bridge design.

The independent check shall include a review of the bridge plans, design calculations, specifications, quantity calculations, and supporting technical documents for accuracy, completeness, constructability, and conformance with applicable design criteria. The review must verify compliance with the latest editions of the AASHTO LRFD

County Project No. 862363 24 June 2026 RFP – Page 19 of 67

Bridge Design Specifications, applicable Caltrans Bridge Design Specifications, Caltrans Memo to Designers (MTD), County design standards, and other project-specific design criteria.

The independent checker must review bridge and structural design assumptions, loadings, member sizing, foundation design assumptions, geometric consistency, details, quantities, and coordination between plans, calculations, and specifications. All review comments shall be documented and transmitted to the design engineer for resolution. The CONSULTANT must address and resolve all substantive comments prior to submittal of the 95% Draft PS&E package.

The Geotechnical Engineer must review the bridge plans, foundation details, retaining structures, and related design elements prior to the 95% Draft PS&E submittal to verify consistency with the approved geotechnical recommendations, foundation parameters, and geotechnical report. Any geotechnical review comments shall be incorporated into the design documents prior to the 95% Draft PS&E submittal.

Task 16 Deliverables

Independent structure design check, signed and stamped (1 digital) Independent Bridge Check Report documenting the scope of review, design criteria reviewed, findings, comments, and recommendations Independent Check Comment and Resolution Log identifying review comments, and responses disposition of comments Geotechnical Review Memorandum documenting compliance of the bridge plans with the approved geotechnical recommendations Signed Independent Design Check Certification or Review Statement by the Independent Checker indicating completion of the review and resolution of all critical comments Final electronic PDF copies of all independent review documentation

Task 17 – Design Checked - 95% Plans, Specifications, and Estimate

A submittal of the 95% plans must be made to the COUNTY based on comments received on the 65% submittal.

CONSULTANT will prepare a full set of construction drawings and details for the PROJECT for COUNTY review and comment once the design is approximately 95% complete. The CONSULTANT shall prepare construction specifications, formatted in accordance with the COUNTY standard boilerplate template, to be submitted with the plans at approximately 95% final design completion for COUNTY review and comment. COUNTY will review the 95% submittal and submit comments to the CONSULTANT. CONSULTANT must create a log showing how all comments were addressed as part of the Final PS&E package submittal. Required mitigation measures and permit requirements from the environmental permits must be included in the specifications.

The CONSULTANT must prepare and submit a construction cost estimate for all bid items, including all notes, assumptions, and preliminary quantity calculations. The estimate must be prepared in the Construction Contract Development Guide and using the County template and submitted at approximately 95% final design completion for COUNTY review and comment. In conjunction with the estimate, the CONSULTANT will prepare a full Bid Items List in compliance with the Caltrans standard format, to include all items of work associated with the construction of all bridge, roadway, and structure related components of the PROJECT.

Task 17 Deliverables

Preliminary construction schedule (Format TBD) 95% Plans, Full size (1 electronic version in PDF format) 95% Plans, Half size (1 electronic version in PDF format) Construction Specifications (1 electronic version in MS WORD format) Engineer’s Estimate (1 electronic version in Excel format) Bid Item List (1 electronic version in Excel format) Structural Calculations signed and stamped (1 electronic version) Response to 65% Plans, Specifications, and Estimate comments Response to Independent Bridge Design check

County Project No. 862363 24 June 2026 RFP – Page 20 of 67

Task 18 – Advertisement Ready - 100% Plans, Specifications, and Estimate

CONSULTANT must prepare a full set of construction drawings and details for COUNTY review and comment once the design is approximately 100% complete. The CONSULTANT must prepare construction specifications, formatted in accordance with Caltrans Standard Specifications and the COUNTY standard boilerplate template, to be submitted with the plans at approximately 100% final design completion for COUNTY review and comment.

The CONSULTANT must prepare and submit a construction cost estimate for all bid items including all notes, assumptions, and preliminary quantity calculations. The estimate must be prepared in the Caltrans standard format using the County template and submitted at approximately 100% final design completion for COUNTY review and comment. In conjunction with a final PROJECT estimate, the CONSULTANT must prepare a full Bid Items List in compliance with the Caltrans standard format, to include all items of work associated with the construction of the PROJECT. In preparation for project construction, the CONSULTANT must also prepare a final set of quantity calculations, as backup to the Bid Items List and Estimate, including all notes and assumptions.