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Rock Slope Protection (RSP) Materials Supply

Active
State & Local

Contract Overview

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

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The contract requires the supply of Caltrans-approved riprap materials for erosion control and abutment stabilization projects, specifically under the Rock Slope Protection (RSP) Materials Supply classification. The work is tied to infrastructure maintenance and protection efforts within Kern County, with performance centered in Bakersfield, California, at the zip code 93304. The materials must meet Caltrans standards to ensure durability and effectiveness in preventing soil degradation and structural damage along slopes and bridge abutments. The solicitation is categorized as a subcontract and is issued by the County of Kern, with a deadline for responses set for August 27, 2026, at 6:00 AM. Interested parties must submit proposals through the BidAmerica portal prior to the deadline, adhering to the specific technical and compliance requirements for riprap sourcing and delivery.

General Info

Supply Caltrans-approved riprap for erosion control in Kern County, deadline August 27, 2026, via BidAmerica.

Agency

California → County of KernView Agency

NAICS

423320 - Brick, Stone, and Related Construction Material Merchant WholesalersView NAICS

Place of Performance

Bakersfield, CA, 93304, USA

Set-Aside

NONE

Documents

This scope was carved out of 25041.

The full solicitation package (5 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Road Reconstruction On Zerker Road Bridge Abutment

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Organization & Contact Information

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AgencyCalifornia → County of Kern
ContactsNo contacts available
OfficeN/A
Organization / Agency
California → County of Kern
View Agency Profile
Office AddressN/A
ContactsNo contact information available

Full Description

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Supply Caltrans-approved riprap for erosion control and abutment stabilization.

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Same NAICS industry code

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Same awarding agency

NAICS: 237310
SLED
Road Reconstruction On Zerker Road Bridge Abutment
Solicitation # 25041
The project involves the reconstruction of the Zerker Road Bridge Abutment in Bakersfield, California, with work encompassing roadway and riverbed excavation, slurry cement backfill, placement of Class 2 aggregate base and hot mix asphalt Type A for repaving the bridge transition, and installation of rock slope protection with RSP fabric. Additional scope includes developing a water supply, implementing temporary traffic control, preparing a water pollution control program, relocating and reconstructing fences, installing a Midwest Guardrail System, painting traffic stripes, and protecting existing utility lines. Mobilization is required, and all work must comply with ASTM standards for materials such as rails, bolts, washers, and nuts, as well as the 2025 Caltrans Standard Specifications, particularly Section 90 for concrete in bollard foundations. The contractor must submit a plan for quality control and inspection, with acceptance determined by the County through sampling at the plant, windrow, or behind the paver, following California Test 125 and AASHTO M 247 for asphalt and glass beads, and California Test 205 for aggregate characteristics. The contract is a firm fixed-price construction bid with a 90-working-day completion window from the commencement date, which begins 13 calendar days after contract execution, and work must start within 15 calendar days of that date. Liquidated damages of $2,000 per calendar day apply for delays, and time is of the essence. The bidder must be licensed under California Class A or C-12, register all subcontractors per Labor Code §1725.5, and comply with prevailing wage laws, apprenticeship requirements, and workers’ compensation statutes. Insurance minimums include $2 million general liability, $1 million auto liability, and $1 million employer’s liability, with the County named as an additional insured. A non-collusion affidavit is mandatory, and bidders must certify compliance with U.S. economic sanctions. A pre-bid site investigation is required, and contractors assume full risk for all conditions reasonably discoverable prior to bidding—no cost or time adjustments are permitted for such conditions. Proposals must be submitted as a sealed Bid Book with original signatures by 11:00 a.m. on August 26, 2026, to the County of Kern Public Works Department in Bakersfield, with no electronic submissions accepted. Although the bid schedule is provided with line items such as mobilization, water
Highway, Street, and Bridge Construction

POSTED

10 days ago

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in 10 days
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