This Subcontract opportunity from California was posted on September 24, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Preliminary Civil/Transportation Engineering (30% Design)

Closed

State & Local

Submission Closed10/20/2026, 05:00:00 PM PDT

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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Geotechnical Investigation & Soil AnalysisThis subcontract for Geotechnical Investigation and Soil Analysis involves performing subsurface investigations for prime contractors working on Montana Department of Transportation interstate culvert projects. The scope of work includes conducting soil boring, sampling, and laboratory testing of soil properties to establish necessary recommendations for structural support and bedding materials. The selected provider will be responsible for delivering comprehensive soil boring logs and Geotechnical Investigation Reports. This opportunity is categorized under NAICS code 541330 and was posted on November 10, 2026, with a response deadline of December 9, 2026.

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Geotechnical InvestigationThis subcontract for Geotechnical Investigation involves performing soil borings and subsurface analysis to support prime contractors on Montana Department of Transportation infrastructure projects. The scope of work includes field drilling, soil sampling, and laboratory testing, culminating in the delivery of a Geotechnical Investigation Report and specific foundation bearing capacity recommendations. Qualified providers must hold a Professional Engineer license with a specialty in Geotechnical engineering. The solicitation was posted on November 10, 2026, with a response deadline of December 9, 2026. This opportunity falls under NAICS code 541330 and is managed through the State of Montana.

Montana

POSTED

about 13 hours ago

DEADLINE

in 28 days

AI Contract Overview

This subcontract opportunity is for preliminary civil and transportation engineering services supporting prime contractors on San Diego Association of Governments transit projects. The selected provider will be responsible for developing engineering plans and drawings up to the 30 percent design level, refining project footprints, determining Right-of-Way requirements, and creating detailed cost estimates and risk registers. Key deliverables include the 30 percent Engineering Plans and necessary inputs for PID-PSR documentation. Qualified candidates must possess a Professional Engineering license and demonstrated experience in rail and bus infrastructure design. The work will be performed in San Diego, California, under NAICS code 541330. Interested parties must submit their responses by the deadline of October 21, 2026.

General Info

Civil and transportation engineering services for San Diego transit projects due October 21, 2026.

Agency

California → San Diego Association of Governments (SANDAG)

NAICS

541330 - Engineering Services

Place of Performance

San Diego, CA, 92173, USA

Set-Aside

NONE

Documents

This scope was carved out of SOL1644054.

The full solicitation package (2 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

San Ysidro Transit Center (SYTC) Improvements Preliminary Engineering & Environmental Clearance

AI Contract Breakdown

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Timeline

PhaseClosed

PostedSep 24

subcontract

Response DeadlineOct 20

Deadline has passed

Submission Closed

10/20/2026, 05:00:00 PM PDT

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Organization & Contact Information

AgencyCalifornia → San Diego Association of Governments (SANDAG)

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → San Diego Association of Governments (SANDAG)

Office AddressN/A

ContactsNo contact information available

Full Description

Performs preliminary engineering for prime contractors on SANDAG transit projects. Develops engineering plans and drawings up to the 30% design level, refines project design features and footprints, determines Right-of-Way (ROW) requirements, and develops cost estimates and risk registers. Requires Professional Engineering (PE) license and rail/bus infrastructure design experience. Delivers 30% Engineering Plans and PID-PSR inputs.