This Government Contract opportunity from California was posted on September 8, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Drainage & Hydrology Engineering

Closed

State & Local

Submission Closed09/29/2026, 11:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

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NAICS: 541330

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Aanko Technologies Inc.

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TSA DTSS and TSII Re-Competition

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MN FERGUS FALLS WMD PRKING REHAB

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Geotechnical Instrumentation and MonitoringThis subcontract opportunity with Cleary Construction, Inc. involves providing geotechnical monitoring and instrumentation services for municipal sewer improvement projects. The selected contractor will be responsible for ensuring ground stability by installing and managing geotechnical sensors, inclinometers, and settlement markers to track soil and ground movement. A critical requirement for this engagement is that all reporting must be completed by a Professional Engineer (PE). The project is designated as a small business set-aside, welcoming applications from SBA certified Veteran Owned, Service-Disabled Veteran Owned, Women-Owned, and HUBZone small businesses. Interested parties must submit their responses by December 4, 2026, under NAICS code 541330. The primary deliverables include the provision of detailed instrumentation data and comprehensive monitoring reports.

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Planning-Level Concept Exhibit & Feasibility SpecialistThis subcontract opportunity is for a Planning-Level Concept Exhibit and Feasibility Specialist to support prime contractors on Orange County Transportation Authority projects. The selected provider will be responsible for developing preliminary project definitions and visual concept exhibits, framing the purpose and need of projects, and identifying operational and physical constraints. Technical requirements include the use of CAD software and GIS, with a strict mandate to comply with Level 1 HSE Specifications. Key deliverables for this engagement include concept exhibits, priority segment profiles, and implementation readiness summaries. The solicitation was posted on October 27, 2026, with a response deadline of November 30, 2026. This role falls under NAICS code 541330 and is managed through the Planning and Analysis division in California.

Planning-Planning & Analysis

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Planning-Level Traffic and Revenue AnalystThis subcontract opportunity is for a Planning-Level Traffic and Revenue Analyst to support prime contractors on Orange County Transportation Authority projects in California. The selected party will conduct high-level assessments of transportation needs and revenue potential, focusing on modeling planning-level tollable demand and analyzing transit considerations along with access and egress. The scope of work requires the use of specialized traffic modeling software and revenue forecasting tools to deliver priority segment profiles and comprehensive summaries of operations, traffic, and revenue. The project falls under NAICS code 541330 and requires strict compliance with Level 1 HSE Specifications. Interested parties must submit their responses by the deadline of November 30, 2026. The primary objective is to provide the necessary data and analysis to determine expected operating benefits for critical transportation infrastructure.

Planning-Planning & Analysis

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Managed Lanes Planning and Segment Screening SpecialistThis subcontract opportunity is for a Managed Lanes Planning and Segment Screening Specialist to support prime contractors on Orange County Transportation Authority projects. The selected provider will be responsible for performing technical analysis, inventorying existing and planned managed lane facilities, and developing risk-based screening methodologies to recommend priority segments. Key deliverables include segment inventories, detailed maps created with GIS software, and editable screening workbooks. The project falls under NAICS code 541330 and requires strict compliance with Level 1 HSE Specifications. Interested parties must submit their responses by November 30, 2026, to support the Planning and Analysis division within the state of California.

Planning-Planning & Analysis

POSTED

DEADLINE

Orange County Managed Lanes Segment Advancement Study C265256

Solicitation # C265256

The Orange County Transportation Authority is soliciting professional services for the Orange County Managed Lanes Segment Advancement Study, a project with an estimated budget of 350,000 dollars and a duration of 18 months. The primary objective of the study is to evaluate existing, planned, and potential managed lane facilities to identify priority segments ready to advance into the Project Initiation Document phase. The work is structured into four key tasks: project management and coordination, segment inventory and screening, priority segment advancement assessment for up to two segments, and the delivery of a final study report with technical appendices. This is a firm fixed price contract requiring the consultant to provide designated key personnel and adhere to Level 1 Health, Safety, and Environmental specifications, including compliance with CCR Title 8. Invoicing occurs on a monthly basis, with payments remitted within 30 calendar days of approval, and final acceptance is contingent upon the release of retention. Proposals must be submitted electronically via the OpenGov portal by November 30, 2026, and must include a detailed cost proposal across the four specified tasks. Consultants are also required to disclose any conflicts of interest and may be required to file Statements of Economic Interest.

Planning-Planning & Analysis

POSTED

DEADLINE

Construction Phase Oversight & InspectionThis subcontract for Construction Phase Oversight and Inspection supports the City of Pasadena Transportation Department on various parking projects. The selected provider will offer field observation and administrative assistance to prime contractors, focusing on the verification of installed quantities, the review of change orders and RFIs, and the evaluation of waterproofing and coating surface preparations. Essential deliverables include verified quantity logs and final inspection reports, all managed through field inspection tools and documentation software. Qualified candidates must hold a Professional Engineer license or be a Certified Construction Inspector. The solicitation is categorized under NAICS code 541330 and was posted on October 27, 2026, with a response deadline of December 2, 2026.

Transportation Department

POSTED

DEADLINE

Parking Facility Repair Design & DraftingThe Parking Facility Repair Design and Drafting subcontract is issued by the City of Pasadena Transportation Department for the preparation of technical drawings and specifications for parking projects. The selected contractor will be responsible for designing waterproofing and coating systems, calculating bid quantities, and developing detailed repair plans for isolated concrete damage utilizing CAD software. Key deliverables include the final repair drawings, technical specifications, and comprehensive bid quantity documents to support prime contractors. Qualified candidates must hold a valid California Licensed Professional Engineer certification to perform the work. This opportunity falls under NAICS code 541330 and was posted on October 27, 2026, with a response deadline of December 2, 2026.

Transportation Department

POSTED

DEADLINE

Parking Facility Structural Assessment ServicesThis subcontract for Parking Facility Structural Assessment Services supports the City of Pasadena Transportation Department by providing specialized structural evaluations and diagnostic testing for parking projects. The scope of work includes conducting corrosion analysis, water intrusion diagnostics, and Post-Tension system reviews for multi-level garages using advanced diagnostic tools. The selected provider must employ a California Licensed Professional Engineer to ensure all technical standards are met. The primary deliverables consist of detailed condition assessment reports that incorporate cost models and prioritization matrices to guide future repairs. Interested parties must submit their responses by December 2, 2026, under NAICS code 541330.

Transportation Department

POSTED

about 15 hours ago

DEADLINE

in about 1 month

AI Contract Overview

This subcontract for Drainage and Hydrology Engineering supports prime contractors on Butte County Public Works projects in California. The selected provider will be responsible for performing hydraulic analysis and designing drainage systems, which includes calculating runoff and designing culverts, ditches, and storm drain systems. The scope of work involves developing drainage plans across multiple project stages, specifically for 35 percent, 65 percent, 95 percent, and final PS&E packages. The contractor is required to utilize Hydrologic and Hydraulic modeling software to deliver comprehensive drainage plans and hydraulic calculations. This opportunity falls under NAICS code 541330 and is associated with the County of Butte. Interested parties must submit their responses by the deadline of September 29, 2026.

General Info

Drainage and hydrology engineering subcontract for Butte County projects, due September 29, 2026.

Agency

California → County of Butte - Public Works

NAICS

541330 - Engineering Services

Place of Performance

CA, USA

Set-Aside

NONE

Documents

This scope was carved out of 533-3019-01.

The full solicitation package (1 document), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Comprehensive A&E and Construction Support Services for Westbound Skyway Bridge Replacement Project

AI Contract Breakdown

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Timeline

PhaseClosed

PostedSep 8

subcontract

Response DeadlineSep 29

Deadline has passed

Submission Closed

09/29/2026, 11:00:00 PM UTC

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Organization & Contact Information

AgencyCalifornia → County of Butte - Public Works

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → County of Butte - Public Works

Office AddressN/A

ContactsNo contact information available

Full Description

Performs hydraulic analysis and designs drainage systems for prime contractors on Butte County Public Works projects. Develops drainage plans for 35%, 65%, 95%, and final PS&E packages, calculates runoff, and designs culverts, ditches, or storm drain systems. Requires Hydrologic and Hydraulic (H&H) modeling software. Delivers drainage plans and hydraulic calculations.