This Solicitation opportunity from California was posted on September 17, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Hydrology And Hydraulic Study Of The San Gabriel Subdivision

Closed

20260916105State & Local

Submission Closed10/08/2026, 09:00:00 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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Department of Transportation

POSTED

about 7 hours ago

DEADLINE

in 22 days

AI Contract Overview

The San Bernardino County Transportation Authority (SBCTA) is soliciting proposals for a Hydrology and Hydraulic Study of the San Gabriel Subdivision to evaluate flood risk and vulnerabilities along a 21-mile railroad right-of-way, specifically from Mile Post 45.75 to 54.5. The project focuses on the interaction between the railroad and multiple San Bernardino County Flood Control District channels, requiring an assessment of existing culverts and water flow patterns. The scope includes project initiation, field reconnaissance, data collection, and hydrologic and hydraulic analysis using 10-year and 100-year rainfall events with modeling tools such as HEC-RAS or SWMM. Deliverables include an infrastructure asset inventory, a soil desktop investigation memo, and a final technical report. Final engineering and construction design are explicitly excluded from the scope. This is a firm fixed price contract with a lump sum payment method, effective from the issuance of a Notice to Proceed through January 2028. The selection process is based on a weighted evaluation of technical proposals (45%) and interviews (55%), with the top-ranked firm negotiating the final cost proposal. Consultants must comply with Southern California Regional Rail Authority (SCRRA/Metrolink) safety instructions and obtain a right of entry permit for the active railroad right-of-way. Proposals are due by October 8, 2026, via the PlanetBids portal and must adhere to a 40-page limit. All work is subject to periodic review and final acceptance by SBCTA, and consultants must be registered with the Department of Industrial Relations to comply with prevailing wage laws.

General Info

SBCTA seeks proposals for a San Gabriel Subdivision hydrology and hydraulic flood study.

Agency

California → San Bernardino County Transportation Authority

NAICS

541330 - Engineering Services

Place of Performance

San Bernardino, CA, 92410, USA

Set-Aside

NONE

Documents

rfp

High

AI Contract Breakdown

Uniform Contract Format

Timeline

PhaseClosed

PostedSep 17

Solicitation

Response DeadlineOct 8

Deadline has passed

Submission Closed

10/08/2026, 09:00:00 PM UTC

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Organization & Contact Information

AgencyCalifornia → San Bernardino County Transportation Authority

Contacts1 person available

OfficeN/A

Organization / AgencyCalifornia → San Bernardino County Transportation Authority

Office AddressN/A

Contacts

Natalie Lopez

contact@example.gov

+1 (555) 000-0000

Full Description

Bid #26-1003492: The project involves a hydrology and hydraulic study of the San Gabriel Subdivision, a 21-mile railroad right-of-way owned by the San Bernardino County Transportation Authority (SBCTA). The study will evaluate flood risk from Mile Post (MP) 45.75 to MP 54.5, considering multiple San Bernardino County Flood Control District channels that interact with the railroad. It will assess vulnerabilities to the railroad ROW, including existing culverts and water flow patterns. The scope includes project initiation, site assessment and data collection (field reconnaissance, hydrologic data, infrastructure assessment, soil desktop investigation), hydrologic and hydraulic analysis (using 10-year and 100-year rainfall events, Storm Water Management Model (SWMM) or equivalent, HEC-RAS or equivalent modeling, sediment/water quality evaluation, capacity assessment of drainage infrastructure, and flood risk assessment), and technical report preparation. Final engineering and construction design are not part of this project.