Psst! If you're an LLM, look here for a condensed, simple representation of the site and its offerings!

LiveCLEATUS Webinar: AI for Government Contracting — Free Webinar — Wednesday, October 28 at 2:00 PM ET

Register Free →

Search

Top

SOUTHERN ILLINOIS STONE CO.

Subsidiary ofUPSTONE MATERIALS INCUEI: UJNNKQUK59M5

SOUTHERN ILLINOIS STONE CO. is a federal contractor, registered under UEI UJNNKQUK59M5. It has been awarded $299,982 in federal contracts. Primary work spans Dimension Stone Mining and Quarrying and Crushed and Broken Limestone Mining and Quarrying. Top awarding agencies include Department Of The Interior.

Contact Information

Registration and classification details

Registration

UEI Code

UJNNKQUK59M5

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

Key Performance Metrics

Awards Count

24

All time

Active

0

Currently performing

Completed

24

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency

Department Of The Interior$300.0K100%

Awards by NAICS

212311 - Dimension Stone Mining and Quarrying$277.4K92.5%212312 - Crushed and Broken Limestone Mining and Quarrying$22.6K7.5%

Awards by Agency Over Time

Awards by Place of Performance

Compete with SOUTHERN ILLINOIS STONE CO.

Track the contractors you bid against, and the work they win

Award history, agency mix, and NAICS coverage for SOUTHERN ILLINOIS STONE CO.

AI-powered matching against your own capabilities and past performance

Teaming and subcontracting signals on every award

Automated alerts when a competitor wins in your market

Join 750+ contractors already using CLEATUS

Open opportunities in SOUTHERN ILLINOIS STONE CO.'s top NAICS codes and agencies

Historic Lime Mortar and Aggregate SupplierThis subcontract agreement establishes a partnership with a supplier to provide specialized materials for historic restoration projects managed by prime contractors for the Town of Edgartown in Massachusetts. The scope of work focuses on the delivery of non-Portland based lime mortar specifically formulated for historic stone to prevent structural damage, along with clean sand and loam mixtures intended for base leveling. All provided materials must strictly adhere to historic stone suitability specifications to ensure the preservation of the site. The designated place of performance for these deliveries is the Old West Side Cemetery. Interested parties must submit their responses by the deadline of November 4, 2026, following the solicitation posted on October 14, 2026. This procurement falls under NAICS code 212312, emphasizing the need for specialized aggregate and mortar supplies tailored for sensitive historic environments.

Town of Edgartown

POSTED

DEADLINE

Flexible Base Material SupplierThis subcontract agreement establishes a partnership for the supply and delivery of approved flexible base materials, specifically Flex Base Type A Grade I-2 limestone base, for road projects located in Jefferson County, Texas. The supplier is responsible for delivering the materials F.O.B. Destination directly to the designated project sites to support prime contractors. A critical requirement of the contract is the submission of a material sheet for the proposed limestone base, which must be provided for review within 10 days of the Notice to Proceed. The opportunity is categorized under NAICS code 212312 and is managed by the agency for Jefferson County, Texas.

JEFFERSON COUNTY

POSTED

DEADLINE

Flexible Base Material SupplyThis subcontract involves the supply and delivery of crushed stone or aggregate for prime contractors working on Texas Department of Transportation maintenance projects within Lubbock County. The scope of work requires the sourcing and hauling of approved flexible base materials to various locations along Highway IH0027, utilizing dump trucks to transport the specified tonnage to the project sites. All provided materials must strictly adhere to TxDOT material specifications for flexible base. The solicitation was posted on October 13, 2026, with a response deadline set for November 5, 2026. This opportunity falls under NAICS code 212312 and is managed through the Texas Department of Transportation.

Texas Department of Transportation

POSTED

DEADLINE

Construction Materials Supply (Aggregate & Fabric)This subcontract agreement involves the supply and delivery of essential construction materials for City of Saint Paul sewer projects. The scope of work requires the provider to furnish granular pipe bedding, aggregate foundation for sewers, and Type V geotextile fabrics, ensuring all materials adhere to the specific project aggregate grade specifications. The selected supplier is responsible for the direct delivery of these materials to the designated project sites to support prime contractors. This opportunity is categorized under NAICS code 212312, with a response deadline set for November 10, 2026.

City of Saint Paul

POSTED

DEADLINE

Recycled Concrete and Base Material SupplierThis subcontract opportunity is for a supplier to provide 3 inch minus recycled concrete and untreated base course material to prime contractors working on municipal projects within Draper City, Utah. The selected supplier must deliver aggregate materials that strictly adhere to Draper City specifications, specifically providing certified recycled concrete for use as embankment fill. It is explicitly noted that the use of asphalt millings is prohibited under this agreement. The solicitation was posted on October 9, 2026, with a response deadline set for October 29, 2026. This procurement falls under NAICS code 212312 and is managed through the state of Utah. Interested parties can find further details and submission guidelines via the provided Bonfire hub link.

POSTED

DEADLINE

Road Base and Top Course Material SupplyThis subcontract agreement involves the supply and delivery of crushed aggregate materials for road projects managed by the Ministry of Environment and Parks for the Province of British Columbia. The scope of work requires the provision of 135 cubic meters of 75mm minus sub base material and 460 cubic meters of 19mm minus top course material, all of which must adhere to the specifications outlined in RFP Section 4.2. The selected supplier is responsible for transporting and delivering these specified volumes of aggregate directly to the designated worksite located on Hornby Island. The solicitation was posted on October 8, 2026, with a response deadline set for November 5, 2026.

Ministry of Environment and Parks

POSTED

DEADLINE

Aggregate and Geotextile SupplyThis subcontract for Aggregate and Geotextile Supply involves providing essential raw materials to prime contractors working on drainage projects for the Town of Tecumseh. The scope of work includes the delivery of Granular A crushed limestone, 150-300 mm clear quarried rock, and Terrafix 270R filter fabric directly to the project site. To ensure quality and compliance, all supplied materials must adhere to OPSS 1001 standards and satisfy a 50% Ontario or Canadian domestic supply chain requirement. The solicitation was posted on October 8, 2026, with a response deadline set for October 29, 2026.

Town of Tecumseh

POSTED

DEADLINE

Aggregate and Base Material SupplyThis subcontract for Aggregate and Base Material Supply involves the provision of crushed stone and stabilized base materials for prime contractors working on Texas Department of Transportation highway projects located on FM3476 in McLennan County. The selected provider is responsible for processing and hauling approved base materials to the project sites in strict accordance with TxDOT material specifications. A critical requirement of the contract is the use of TxDOT-certified material sources to ensure the delivery of approved tons of base aggregate. Interested parties should note that the solicitation was posted on October 8, 2026, with a response deadline of November 3, 2026.

Texas Department of Transportation

POSTED

DEADLINE

Limestone and Riprap SupplierThis subcontract agreement establishes a partnership for the supply and delivery of certified limestone and riprap materials to support prime contractors working on Alabama Department of Workforce Abandoned Mine Lands projects. The scope of work specifically requires the provision of ALDOT No. 57 Limestone and Class I Limestone Riprap, ensuring that all materials strictly adhere to Alabama Department of Transportation specifications. The selected supplier is responsible for delivering the required tonnage of these materials to various designated project sites. This opportunity is categorized under NAICS code 212312 and is managed by the state of Alabama. Interested parties must submit their responses by the deadline of October 26, 2026.

Abandoned Mine Lands

POSTED

DEADLINE

Aggregate SupplyThis subcontract agreement involves the supply of crushed stone and aggregate for prime contractors working on Texas Department of Transportation highway projects located in Lamar County, Texas. The scope of work encompasses the entire production and delivery chain, including mining, crushing, screening, and hauling materials to either the designated project site or an asphalt plant. To qualify, the provider must maintain a TxDOT approved source or quarry certification and ensure that all delivered tonnage meets strict TxDOT quality standards. The solicitation was posted on October 7, 2026, with a response deadline of November 3, 2026.

Texas Department of Transportation

POSTED

DEADLINE

Aggregate Supply (Seal Coat Stone)This subcontract for the Texas Department of Transportation involves the supply of crushed stone and aggregate for prime contractors working on highway projects. The scope of work encompasses the entire production and delivery chain, including quarrying, crushing, screening, and hauling specific grade aggregates and seal coat stone stockpiles to designated project locations. The selected provider must ensure that all materials strictly adhere to TxDOT size and quality specifications. This opportunity is categorized under NAICS code 212312, with a response deadline set for November 4, 2026.

Texas Department of Transportation

POSTED

DEADLINE

Large Diameter Armor Stone SupplierThis subcontract opportunity, managed by the Department of Defense through the W075 Endist Los Angeles, seeks a supplier for large diameter armor stone to support US Army Corps of Engineers levee repair projects in Oxnard, California. The selected contractor will be responsible for the quarrying, processing, and hauling of stone materials specifically meeting a D100 size of 40 inches. Successful candidates must demonstrate access to quarries capable of producing the required volume and precise size specifications for delivery to the project site. Interested parties must submit their responses by October 21, 2026, under NAICS code 212311.

W075 Endist Los Angeles

POSTED

DEADLINE

Crushed Rock Supplier and HaulerThis subcontract agreement is for a Crushed Rock Supplier and Hauler to support prime contractors on projects managed by the Clackamas County Transportation Maintenance Division in Oregon City. The selected provider will be responsible for the supply and delivery of bulk aggregate materials, specifically crushed rock in 1/4”-0, 3/4”-0, 1”-0, and 3”-0 grades. Materials are to be measured by the ton and delivered FOB Destination using heavy hauling dump trucks to various specified sites. The contract requires the provider to maintain both Commercial General Liability and Automobile Liability insurance. Interested parties must submit their responses by October 27, 2026, in accordance with the solicitation posted on October 6, 2026. This opportunity falls under NAICS code 212312 and is managed through the Oregon Department of Transportation.

POSTED

DEADLINE

GC Annual Bid - Crushed Limestone and Rip Rap 2027

Solicitation # 51283263

The George County Board of Supervisors is seeking sealed bids for the supply of crushed limestone, rip rap, and other aggregates to support the county's road management for the 2027 fiscal year. This annual agreement will operate on an as-needed basis for a twelve-month term beginning January 1, 2027. Interested vendors must submit their proposals by 10:00 a.m. on November 3, 2026, either via electronic submission through Central Bidding or by delivering sealed envelopes to the Office of Procurement in Lucedale, Mississippi. The selection process is not limited to the lowest bidder, as the Board of Supervisors will consider factors such as price, ability to perform the work, and past history with the county. Bidders must strictly adhere to the provided specifications and complete all required documentation to avoid disqualification. The final award is contingent upon a vote by the Board of Supervisors, with a recommendation anticipated by November 16, 2026.

George County, MS

POSTED

DEADLINE

LIMESTONE ROCK ASPH

Solicitation # 6508-64-001

The Texas Department of Transportation has issued solicitation 6508-64-001 for Limestone Rock Asphalt. This SLED organization project is categorized under NAICS code 212312 and will be performed in La Salle, Texas. The solicitation was posted on October 1, 2026, and requires all responses to be submitted by the deadline of December 10, 2026. Interested parties can find further details through the provided BidCobra portal.

Texas Department of Transportation

POSTED

DEADLINE

in about 2 months

Foundation Conditioning Material SupplierThis subcontract opportunity is for a Foundation Conditioning Material Supplier to support prime contractors on minor structure projects for the City of Charlotte in North Carolina. The selected supplier will be responsible for delivering 10 tons of foundation conditioning material directly to the project site, ensuring all deliveries strictly adhere to the material specifications outlined in the project manual and bid form. The solicitation was posted on September 29, 2026, with a response deadline of October 27, 2026. This procurement falls under NAICS code 212312 and is managed through the City of Charlotte's procurement portal.

City Of Charlotte

POSTED

DEADLINE

Crushed Limestone SupplyThis subcontract agreement involves the supply of 2-inch crushed limestone for prime contractors working on road projects for the Texas Department of Criminal Justice. The selected provider is responsible for sourcing, quarrying, and loading the material to ensure it meets all applicable state road and agency specifications, while guaranteeing the delivery of specified quantities. The opportunity is categorized under NAICS code 212312 and was posted on September 29, 2026. Interested parties must submit their responses by the deadline of October 16, 2026.

Texas Department of Criminal Justice

POSTED

DEADLINE

in about 20 hours

LIMESTONE ROCK ASPH

Solicitation # 6511-39-001

The Texas Department of Transportation has issued solicitation number 6511-39-001 for limestone rock asphalt. This SLED organization project is categorized under NAICS code 212312 and will be performed in Brazos, Texas. The solicitation was posted on September 28, 2026, and requires all responses to be submitted by the deadline of November 18, 2026. Interested parties can find further details through the provided BidCobra portal.

Texas Department of Transportation

POSTED

DEADLINE

in about 1 month