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CONRINTHIAN CONTRACTORS (DUNS 150814494)3126 S ABINGDON STREETARLINGTON, VA 22206

UEI: SLED_F6E386FD64C6670E

CONRINTHIAN CONTRACTORS (DUNS 150814494)3126 S ABINGDON STREETARLINGTON, VA 22206 is a federal contractor, registered under UEI SLED_F6E386FD64C6670E. It has been awarded $500,000,000 across 1 federal contract. Primary work spans Other Heavy and Civil Engineering Construction. Top awarding agencies include Navfacsyscom Washington.

Contact Information

Registration and classification details

Registration

UEI Code

SLED_F6E386FD64C6670E

Federal Contracting Overview

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

Key Performance Metrics

Awards Count

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Total Awards

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Contracts

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Award Analytics & Distribution

Awards by Agency

Navfacsyscom Washington$500.0M100%

Awards by NAICS

237990 - Other Heavy and Civil Engineering Construction$500.0M100%

Awards by Agency Over Time

Awards by Place of Performance

Open opportunities in CONRINTHIAN CONTRACTORS (DUNS 150814494)3126 S ABINGDON STREETARLINGTON, VA 22206's top NAICS codes and agencies

Site Grading and Earthwork

CONSTRUCTION & EQUIPMENT MRO SVC I

POSTED

about 8 hours ago

DEADLINE

AIRFIELD 2028 ALL PROJECTS (AIP / AUI / CIRCUITS / FOD) CombinedThe contract targets comprehensive upgrades to the airfield infrastructure at the Port of Seattle, focusing on modernizing lighting systems by replacing circuits with low megger readings and installing energy-efficient LED fixtures and signage throughout the airfield. Parallel efforts will address deteriorating pavement and critical utilities to ensure operational safety and longevity. Wildlife hazard management is a key component, involving the removal of turf edge dams along runways, taxiways, and access roads, installation of anti-perching devices on airfield signs, and mitigation of ponding through regrading and new storm drainage systems to reduce bird activity and water accumulation. Additionally, failing flush fire hydrant access hatches will be replaced to improve emergency response access and compliance with safety standards. The project is forecasted under NAICS code 237990 and is managed by the Aviation Project Management Group, with Yanet Maldonado listed as the primary point of contact for inquiries.

Aviation Project Management Group

POSTED

about 8 hours ago

DEADLINE

AIRFIELD 2030 ALL PROJECTS (AIP / AUI / CIRCUITS / FOD) CombinedThe contract encompasses a broad range of airfield infrastructure upgrades at the Port of Seattle, focusing on enhancing safety, efficiency, and compliance. Key components include replacing aging airfield lighting circuits with low megger readings with modern LED fixtures and signs to improve visibility and reduce maintenance costs. Concurrently, failing pavement sections and critical utilities will be removed and replaced to ensure structural integrity and operational reliability. Wildlife hazard mitigation measures involve removing turf edge dams along runways, taxiways, and access roads, installing anti-perching devices on signs to deter birds, and addressing ponding issues through regrading and new storm drainage infrastructure. Additionally, deteriorating flush fire hydrant access hatches will be replaced to ensure rapid access for emergency response teams. The project is categorized under NAICS code 237990 and falls under the Aviation Project Management Group, with the Port of Seattle as the overseeing agency. The solicitation is posted as a forecast with no set-aside classification, indicating it is open to all eligible contractors. Primary point of contact for inquiries is Yanet Maldonado, reachable via email or phone, and additional details can be accessed through the provided portal link. The project is anticipated to begin after the posted date in July 2026, with all work taking place at the airport facility.

Aviation Project Management Group

POSTED

about 8 hours ago

DEADLINE

AIRFIELD 2029 ALL PROJECTS (AIP / AUI / CIRCUITS / FOD) CombinedThe contract encompasses a broad range of airfield infrastructure improvements at the Port of Seattle, focusing on modernization and safety enhancements across multiple systems. Key components include replacing airfield lighting circuits with low megger readings with new LED fixtures and signs to improve reliability and energy efficiency, replacing deteriorating pavement and critical utilities to maintain operational integrity, and implementing comprehensive wildlife hazard management measures such as removing turf edge dams, installing anti-perching devices on signs, and regrading areas with new storm drainage to eliminate ponding and reduce bird attractants. Additionally, failing flush fire hydrant access hatches will be replaced to ensure rapid and unobstructed access for emergency response. The project is part of the AIRFIELD 2029 ALL PROJECTS initiative, classified under NAICS code 237990 for other heavy and civil engineering construction, and is managed by the Aviation Project Management Group under the Port of Seattle. Solicitations are open with a posted date of July 31, 2026, and inquiries should be directed to Yanet Maldonado, the primary point of contact. The work is critical to maintaining airfield safety, regulatory compliance, and long-term operational readiness, with all efforts centered on upgrading aging infrastructure to meet current aviation standards.

Aviation Project Management Group

POSTED

about 8 hours ago

DEADLINE

Jack Block Park Pier ReplacementThe Northwest Seaport Alliance, acting through the Port of Seattle, is forecasting a project to demolish the existing end-of-life pier at Jack Block Park and construct a new pier in its place, along with associated repairs to the pier plaza. This effort aims to modernize aging infrastructure to ensure safety, functionality, and long-term durability for public use and maritime operations. The North American Industry Classification System code 237990 indicates the work falls under other heavy and civil engineering construction, encompassing the full scope of demolition, new construction, and site improvements. The primary point of contact for inquiries is Yanet Maldonado, with Valerie Huffman serving as the project manager, both reachable through the Port of Seattle's official channels. The forecast notice was posted on July 31, 2026, signaling an upcoming procurement process that will solicit qualified contractors to deliver the project at the designated site in Jack Block Park.

Northwest Seaport Alliance (NWSA)

POSTED

about 8 hours ago

DEADLINE

2027 Airfield Project - Contract 1The Port of Seattle’s Aviation Project Management Group is forecasting a comprehensive airfield modernization initiative under Contract 1 for 2027, focused on upgrading critical infrastructure to enhance safety, efficiency, and compliance. The project encompasses replacing aging airfield lighting circuits with low megger readings with new LED fixtures and signage, improving visibility and reducing maintenance loads. Simultaneously, failing pavement sections and essential utilities throughout the airfield will be reconstructed to ensure structural integrity and operational reliability. Wildlife hazard mitigation is a major component, involving the removal of turf edge dams along runways, taxiways, and access roads, installation of anti-perching devices on airfield signs to deter birds, and the regrading of low-lying areas coupled with new storm drainage systems to eliminate ponding that attracts wildlife. Additionally, degraded flush fire hydrant access hatches will be replaced to ensure rapid and unobstructed access for emergency response crews. The project falls under NAICS code 237990 and is managed by the Port of Seattle, with Jay Kim as the primary point of contact and Mengqi Wu serving as the project manager. The solicitation is publicly available through the Port’s portal, though no set-aside type has been specified.

Aviation Project Management Group

POSTED

about 8 hours ago

DEADLINE

2027 Airfield Project - Contract 2The contract involves comprehensive upgrades to the airfield infrastructure at the Port of Seattle, focusing on critical safety and operational enhancements. Key components include replacing airfield lighting circuits with low megger readings and installing new LED lighting fixtures and signs to improve visibility and energy efficiency. Aging pavement and essential utilities will be replaced to ensure structural integrity and reliable service. Wildlife hazard mitigation efforts will remove turf edge dams along runways and taxiways, install anti-perching devices on airfield signs to deter birds, and address ponding issues through regrading and the installation of new storm drainage systems. Additionally, failing flush fire hydrant access hatches will be replaced to ensure unimpeded access for emergency response. The work is scheduled under the 2027 Airfield Project – Contract 2, managed by the Aviation Project Management Group, with primary contact details provided for Moraa Omwega and Project Manager David Neds.

Aviation Project Management Group

POSTED

about 8 hours ago

DEADLINE

T18 Lift Station ReplacementThe Port of Seattle through its Waterfront Project Management division is preparing to replace the entire lift station located at the north lunchroom in Terminal 18. This project is classified under NAICS code 237990, indicating it relates to other heavy and civil engineering construction activities, specifically targeting the removal and installation of a fully functional wastewater lift system. The solicitation was posted on July 31, 2026, and is currently listed as a forecast, meaning it is an early indication of procurement intent without an open bid at this time. The work will require complete replacement of the existing infrastructure to ensure continued operational reliability and compliance with safety and environmental standards. Primary contact for inquiries is Angela Peterson, reachable via phone or email, with Crystal Cuellar serving as the project manager overseeing execution. The place of performance is confirmed as Terminal 18, though specific address details are not provided in the data.

Waterfront Project Management

POSTED

about 8 hours ago

DEADLINE

Həʔapus Park Redevelopment - ConstructionThe Həʔapus Park Redevelopment project, managed by the Port of Seattle under Waterfront Project Management, will deliver a comprehensive upgrade to park infrastructure including new restrooms, enhanced pathways and lighting, a boot washing station, dog-friendly amenities, wayfinding and interpretive signage, and a hand-carrying boat launch. Work will be carefully phased to comply with environmental permitting requirements, particularly for in-water construction activities, and will be timed to avoid disruption to tribal fisheries. The project is targeted for substantial completion by the second quarter of 2028. Primary contact for inquiries is Angela Peterson, with Julie Yun serving as Project Manager, and further details can be accessed through the Port’s official solicitation portal.

Waterfront Project Management

POSTED

about 8 hours ago

DEADLINE

45th Ave SW Culvert Replacement and Habitat Restoration

Solicitation # 45th-ave-sw-culvert-replacement-habitat-restoration

The City of Seattle is soliciting bids for the replacement of a culvert along 45th Avenue SW and the associated restoration of surrounding habitat in King County, Washington. The project involves removing the existing infrastructure and installing a new culvert system to improve drainage, structural integrity, and environmental flow, while also implementing ecological restoration measures to enhance native vegetation and aquatic habitat. The solicitation is designated to encourage participation from Minority Business Enterprises certified by the NMSDC and Woman Business Enterprises certified by WBENC, supporting diversity in contracting opportunities. The North American Industry Classification System code for the project is 237990, indicating it falls under other heavy and civil engineering construction. The contract opportunity is managed by Shimmick Construction Company, Inc., which serves as both the agency and contracting entity, with Jamie Miranda listed as the primary point of contact for inquiries. All bids must be submitted by August 12, 2026, with the solicitation posted on August 5, 2026. The work will be performed on-site at 45th Avenue SW in Seattle, and interested parties are directed to the provided web link for additional details.

Shimmick Construction Company, Inc

POSTED

about 8 hours ago

DEADLINE

Aerial Structures Rehab

Solicitation # aerial-structures-rehab

The contract solicitation titled Aerial Structures Rehab is issued by WMATA with the bid/contract number FRBIR266247/LAN and is focused on rehabilitation work for aerial structures located in Washington DC. The solicitation was posted on August 5, 2026, with a response deadline of August 19, 2026, and is designated as a small business set-aside under the SBA program, specifically reserved for Small Business and Small Disadvantaged Business concerns. The NAICS code 237990 indicates this is for other heavy and civil engineering construction, targeting specialized infrastructure repair. The contracting office is Posillico Civil, Inc., serving as both the organization and the agency name, with Robyn Alma listed as the primary point of contact, reachable via email and phone. The place of performance is clearly defined as the District of Columbia, though no specific street address is provided. Bidders must respond through the official SBA opportunity portal, with additional details available through the provided UI link.

Posillico Civil, Inc.

POSTED

about 8 hours ago

DEADLINE

Earthwork and ExcavationThe contract involves earthwork and excavation services for drainage improvements, including the removal of failed material, slope regrading, ditching, grading, and soil stabilization measures to ensure long-term structural integrity and proper water flow. Work will focus on preparing and reshaping terrain to support effective drainage systems, with attention to erosion control and landform stability. All activities must comply with engineering specifications to address existing failure conditions and prevent future degradation. This is a subcontract under the Texas Department of Transportation, posted on August 5, 2026, with responses due by September 2, 2026. The North American Industry Classification System code is 237990, indicating other heavy and civil engineering construction. The place of performance is within Texas, though specific location details are not provided. The contract is accessible through the Texas SmartBuy portal, and there is no set-aside designation specified. No point of contact information is included in the posting.

Texas Department of Transportation

POSTED

about 9 hours ago

DEADLINE

Heavy-Duty Liquid Brine De-Icing Spray System & Optional Production Equipment

Solicitation # 2025-RFQ-010

The City of New Carrollton Department of Public Works is soliciting competitive quotes for a commercial-grade, truck-mounted liquid brine de-icing and anti-icing spray system designed for municipal winter road maintenance operations. The system must support lane pre-treatment and post-storm liquid applications and include full procurement, delivery, installation, and operator training. Vendors may also submit optional bids for brine blending or mixing hardware and telematics packages to enhance system functionality and operational efficiency. The equipment must meet rigorous commercial standards to ensure durability and performance under demanding seasonal conditions across Maryland’s road network. Bids are due by August 14, 2026, at 4:00 PM, following the solicitation’s posting on August 5, 2026 under reference number 2025-RFQ-010. Proposals must be submitted through the designated portal, and all inquiries should be directed to Assistant Director Leroy Robinson or Purchasing Officer Quentin Dawson, whose contact information is provided. The system will be deployed exclusively within New Carrollton, Maryland, and all performance obligations, including training and system integration, must be fulfilled at this location. The procurement is open to all qualified vendors with no set aside designation, emphasizing competitive pricing, technical capability, and comprehensive service support.

POSTED

about 9 hours ago

DEADLINE

RFQ 711024: Rehabilitation of Storm Water Management Detention Facilities

Solicitation # IFB-125730

The County of Loudoun, Virginia is seeking qualified General Contractors to rehabilitate three storm water management detention facility structures—BC26, BC38, and BC124—each located at separate sites throughout the county. These structures primarily consist of corrugated metal pipes paired with concrete control structures and manholes equipped with ladders for access and maintenance. The project involves comprehensive rehabilitation efforts to restore the functionality, integrity, and safety of these critical infrastructure components. Bidders must review the full solicitation details on the official county website, www.loudoun.gov/bids, as online responses through EVA will not be accepted under any circumstances. All submissions must adhere to the prescribed delivery method outlined in the complete solicitation documents. The solicitation is officially designated as IFB-125730, titled RFQ 711024, and was posted on August 5, 2026, with a firm deadline for responses set for September 9, 2026, at 9:00 PM Eastern Time. The County of Loudoun, a SLED-level agency, is the contracting entity, and the project’s place of performance is entirely within Loudoun County, Virginia. Prospective bidders should direct all inquiries to Melissa Prell at melissa.prell@loudoun.gov or 703-771-5142. For additional information and to access the full solicitation, bidders must use the provided UI link and comply with all submission requirements as stated in the official documentation, as failure to do so will result in disqualification.

County of Loudoun

POSTED

about 9 hours ago

DEADLINE

in about 1 month

Water Treatment Plant Media Replacement

Solicitation # RFQ2026-08MediaReplacement

The West Travis County Public Utility Agency is seeking qualified vendors to perform the replacement of filter media across three Unit #3 filters at its Water Treatment Plant. The scope of work includes providing all necessary labor, materials, equipment, disposal services, delivery, and installation required to complete the project in full compliance with operational standards. The solicitation, identified as RFQ2026-08MediaReplacement, was posted on August 5, 2026, with responses due by 6:00 PM on August 27, 2026. All submissions must demonstrate technical capability, experience with similar water treatment system upgrades, and adherence to safety and environmental regulations. Performance will occur at the agency’s facility in Bee Cave, Texas, with no specific set-aside provisions applied. Primary contact for inquiries is Leo Cruz, with supplemental support from General Manager Jennifer Riechers and Finance Manager Jennifer Smith. All communication should be directed to the provided email addresses and phone numbers. The contract does not specify a NAICS code or set-aside type, indicating open competition among qualified contractors. Vendors are expected to submit complete proposals detailing methodology, timelines, cost breakdowns, and proof of licensing and insurance. The online portal at the provided UI link serves as the official platform for accessing solicitation documents and submitting responses.

WEST TRAVIS COUNTY PUBLIC UTILITY AGENCY

POSTED

about 10 hours ago

DEADLINE

City of Edmonton - Notice of Planned Procurement - 935641 Valley Line Integrated Control System (Progressive Design Build)

Solicitation # AB-2026-05505

The City of Edmonton is seeking qualified proponents for the progressive design-build procurement of the Valley Line Integrated Control System, identified by solicitation number AB-2026-05505. This procurement aims to deliver a comprehensive control system for the Valley Line light rail transit extension, involving the design, integration, and implementation of advanced signaling, communications, power, and automation systems to ensure safe and efficient operations. The contract will be awarded through a progressive design-build approach, allowing for early contractor involvement during the design phase to optimize constructability, cost, and schedule outcomes. Proposals must be submitted by the deadline of August 31, 2026, at 10:00 PM Mountain Time, following the detailed requirements outlined in the notice. The place of performance is in Alberta, with the City of Edmonton as the procuring agency. Mary Baraghin, Senior Buyer at the City of Edmonton, serves as the primary point of contact for all inquiries related to this procurement. All documentation and submissions must be made through the Alberta Purchasing Connection portal via the provided UI link. This solicitation does not specify a set-aside category or NAICS code, and is open to all eligible proponents who can demonstrate the technical expertise, financial stability, and project management capability required to deliver a mission-critical transit control system. The City emphasizes innovation, reliability, and long-term system performance, and expects proposals to include detailed plans for stakeholder engagement, risk mitigation, and compliance with municipal and provincial standards.

City of Edmonton

POSTED

about 10 hours ago

DEADLINE

Ground Storage Tank Rehab - Homeward Way and First Colony CWA2503

Solicitation # 2026-ITB-033

The City of Sugar Land is soliciting bids for the rehabilitation of ground storage tanks located at Homeward Way and First Colony under solicitation number 2026-ITB-033, with responses due by August 20, 2026. The project involves comprehensive surface preparation, coating application, and structural modifications to extend the service life of aging water storage infrastructure critical to maintaining system pressure, fire protection, and water reliability for the community. Work must comply with SSPC, ASTM, AWS, OSHA, TCEQ, and ANSI/NSF 61 standards, including the use of non-lead, potable water-safe coatings and proper hazardous waste disposal. All materials must be delivered in original, labeled containers, stored above ground on skids, and protected from contamination using rust-inhibitors and dehumidification where necessary. Contractors are responsible for scaffolding, ventilation, and adherence to OSHA 29 CFR 1926 and 1910 regulations during all phases of work onsite. The contract is structured as a firm-fixed-price agreement with a base bid and fixed-quantity extra line items totaling an estimated value between $25,000 and $123,350, with no option periods or escalation clauses specified. Proposals must include a signed certification regarding debarment, a completed conflict of interest questionnaire, a notarized certificate of interested persons under Texas Government Code 2252.908, and written verifications confirming compliance with Texas laws prohibiting boycotts of Israel, certain energy companies, and firearm and ammunition industries. Submission requires five hardcopy packages delivered to City Hall by the deadline, with all questions routed through the OpenGov Procurement portal. Performance will occur at the project site with inspections and acceptance conducted by the City’s Engineer or authorized representative using ASTM and NACE standards for surface profile, holiday detection, and coating integrity. Payment terms reference monthly applications but lack specific remittance details or accounting codes, and no CAGE code, UEI, or small business certifications are required. The award will go to the lowest responsive and responsible bidder based on best value to the City, with no formal scoring weights disclosed.

POSTED

about 10 hours ago

DEADLINE

KLF MPA & Pavement Repairs

Solicitation # 4688

The County of Sacramento is soliciting bids for the KLF MPA & Pavement Repairs project, identified by solicitation number 4688, with a response deadline of September 10, 2026. The work involves repairing multiple failed sections of the Multipurpose Area, rehabilitating a portion of the entrance area, and addressing several utility boxes located along the primary on-site perimeter road that leads to the active disposal area. This effort is part of routine infrastructure maintenance to ensure safe and functional access within the Waste Management and Recycling facility. The contract is being issued under the State and Local Government (SLED) category by the California agency, with all work to be performed within Sacramento County. Interested parties must submit proposals before the stated deadline, and inquiries should be directed to Jeremy Zuber, Senior Civil Engineer, or Crystal Sheehan, Senior Contract Services Officer, using the provided contact details. The project is managed through the county’s procurement system with the official portal link accessible for further information.

Waste Management and Recycling

POSTED

about 11 hours ago

DEADLINE

in about 1 month