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OLD LINE CONSTRUCTION INC

Subsidiary ofOLD LINE CONSTRUCTION INCUEI: S6L9FNEM5V16CAGE: 7U7P1

OLD LINE CONSTRUCTION INC is a federal contractor, registered under UEI S6L9FNEM5V16 and CAGE code 7U7P1. It has been awarded $3,863,809 in federal contracts. Primary work spans Commercial and Institutional Building Construction, Other Heavy and Civil Engineering Construction, and Water and Sewer Line and Related Structures Construction. Top awarding agencies include Department Of Defense (dod), Department Of The Interior, and Social Security Administration.

Contact Information

Registration and classification details

Registration

UEI Code

S6L9FNEM5V16

CAGE Code

7U7P1

Entity Structure

Corporate Entity (Not Tax Exempt)

Established

N/A

Business Classifications

For Profit OrganizationSubchapter S Corporation

NAICS Codes

237110Water and Sewer Line and Related Structures Construction(Primary)

Federal Contracting Overview

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

AI Capability Profile

Old Line Construction Inc. specializes in the design and construction of water and sewer line systems and associated infrastructure, operating under NAICS 237110. Their technical expertise includes trenching, pipe installation, backfilling, pressure testing, and compliance with municipal and federal...

Old Line Construction Inc. specializes in the design and construction of water and sewer line systems and associated infrastructure, operating under NAICS 237110. Their technical expertise includes trenching, pipe installation, backfilling, pressure testing, and compliance with municipal and federal stormwater and sanitary sewer standards. The company demonstrates proficiency in executing complex utility projects with precise scheduling and field coordination, ensuring minimal disruption to surrounding environments and public services. Their approach emphasizes adherence to OSHA safety protocols, ASTM material specifications, and ASTM C476 grouting standards, reflecting a commitment to durable, code-compliant infrastructure delivery. The contractor has delivered work for the Social Security Administration, indicating experience supporting federal facility infrastructure upgrades, particularly in the context of campus-wide utility modernization. This relationship suggests familiarity with federal construction guidelines, including GSA design standards and federal environmental review processes. Their ability to secure and execute a notice to proceed under a federal agency signals trust in their project management rigor and operational reliability. Old Line Construction’s industry focus is squarely on underground utility construction, with deep specialization in water and sewer line systems for public and federal facilities. They operate within a niche requiring precise geotechnical awareness, utility locates, and coordination with existing subsurface networks. Their market positioning centers on delivering mission-critical infrastructure with high reliability, serving agencies where continuity of essential services is paramount. As a small business structured as a 2L entity based in Dunkirk, Maryland, Old Line Construction maintains a regional footprint with a focus on Mid-Atlantic federal and municipal projects. The company holds no federal certifications but leverages local expertise and hands-on field experience to compete effectively in specialized utility construction markets. Their operational model emphasizes agility, compliance, and on-time execution in regulated environments.

Key Performance Metrics

Awards Count

4

All time

Active

0

Currently performing

Completed

4

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
Awards by NAICS
Export
Awards by Agency Over Time
Awards by Place of Performance

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NAICS: 236220
New
SLED
RFQ No 320830-FY27-15 Pre-Qualification for Construction - Leesburg Executive Airport Air Traffic Control Tower
Solicitation # 320830-FY27-15
The Town of Leesburg, Virginia, is issuing Request for Qualifications (RFQ) No 320830-FY27-15 to pre-qualify prime contractors for the construction of a Federal Contract Tower at the Leesburg Executive Airport. The project involves building a five-story structure, approximately 85 feet tall, featuring an eight-sided 440 square foot cab, a 42-inch thick concrete mat slab foundation, and a steel construction shaft. The scope includes comprehensive mechanical and electrical systems, such as an air-cooled heat pump and redundant air handling units for the cab, as well as sitework involving security fencing, parking, and xeriscape landscaping. Connectivity to Airport and FAA systems must be established based on the FAA Minimum Equipment List. To be eligible to bid, prime contractors must submit their applications via the eVA website by November 23, 2026. Applicants must be Class A Contractors under the Code of Virginia and provide a Certificate of Good Standing. Evaluation criteria focus on financial ability, including the capacity to obtain bid, payment, and performance bonds from a US Treasury-listed surety licensed in Virginia. Contractors must demonstrate a clean legal and contractual history for the past ten years, with no judgments for breach of contract or related criminal convictions. Key personnel requirements include a Superintendent with at least ten years of experience and an OSHA 30-hour certification, and a Quality Control Manager with five years of experience and a U.S. Army Corps of Engineers Certification or equivalent. Subcontractors are not required to pre-qualify.
Town of Leesburg

POSTED

about 4 hours ago

DEADLINE

in 28 days
View Details
NAICS: 237110
New
IEUA RMPU Basin Improvements Project Montclair Basin Improvements
Solicitation # ieua-rmpu-basin-improvements-project-montclair-basin-improvements
The IEUA RMPU Basin Improvements Project involves construction improvements at Montclair Basin 2 and 3 in Chino, California. The primary objective is to divert available storm flows from the San Antonio Creek Channel into existing basins to facilitate groundwater recharge. The scope of work is comprehensive, requiring all materials, labor, tools, equipment, and transportation necessary to furnish, install, commission, and deliver a fully functional project. Key activities include civil and site work such as grading, demolition, saw cutting, cold planing, and SWPPP, as well as the installation of concrete pipes and structures. Specialized services required for the project include electrical work, welding, construction surveying, traffic control, and preconstruction video. Norstar Plumbing and Engineering, Inc. is managing the subcontractor solicitation for this project, specifically seeking certified and qualified DBE, MBE, SBE, and WBE subcontractors and suppliers. The solicitation is categorized under NAICS code 237110. Interested parties must submit their bids by October 29, 2026, at 2:00 PM. Detailed plans and specifications are available through the Inland Empire Utilities Agency bidding website. Primary points of contact for this opportunity are Nathan Plummer and Destiny Plummer.
Norstar Plumbing and Engineering, Inc

POSTED

about 5 hours ago

DEADLINE

in 2 days
View Details
NAICS: 237110
New
Morgans Branch Force Main and Pump Station Improvements
Solicitation # SRP-W-134-0290
The Morgans Branch Force Main and Pump Station Improvements project, solicitation number SRP-W-134-0290, involves the construction of 16,435 linear feet of new 20-inch ductile iron force main and extensive upgrades to the existing Morgans Branch Pumping Station in North Carolina. The scope of work includes the installation of a new wet well, valve vault, and associated appurtenances, as well as the demolition of existing pumps and piping. Key deliverables include the installation of mechanical and electrical systems, such as pumps, a generator, and odor control equipment, along with new gravity sewers and manholes. The project has an estimated value of 16,690,000 dollars and is set aside for small businesses, including certified veteran-owned, service-disabled veteran-owned, women-owned, and HUBZone small businesses. The contract will be awarded to the responsible bidder submitting the lowest responsive bid, with evaluation based on qualifications, financial ability, and adherence to bidding terms. Bidders must provide a bid bond, performance and payment bonds, and proof of insurance from companies with an A.M. Best rating of A-VII or better. Compliance with MWBE requirements, including the submission of a Good Faith Efforts Form and Table A, is mandatory for responsiveness. Contract administration is managed by Willis Engineers on behalf of the City of Belmont. Performance is subject to liquidated damages of 1,000 dollars per day for failure to meet substantial completion deadlines. Payment is processed monthly via applications for payment reviewed by the engineer.
Don Moorhead Construction, Inc.

POSTED

about 5 hours ago

DEADLINE

in 14 days
View Details
NAICS: 236220
New
Construction of the Recharge Master Plan Update Basin Improvements Project Montclair Basin Improvements
Solicitation # construction-recharge-master-plan-update-basin-improvements-project-montclair-basin-improvements-2
The Construction of the Recharge Master Plan Update Basin Improvements Project Montclair Basin Improvements is a solicitation issued by RT Contractor Corp for a project under the Inland Empire Utilities Agency in California. This opportunity is specifically set aside for Disadvantaged Business Enterprises (DBE) under the Department of Transportation, falling under NAICS code 236220. The solicitation was posted on October 26, 2026, with a response deadline of November 4, 2026. The project area for subcontracting opportunities is identified as Riverside or Los Angeles. To secure project financing, bidders must strictly adhere to Disadvantaged Business Enterprise requirements that expand upon State Water Resources Control Board standards. Central to this is the demonstration of six Good Faith Efforts (GFE). Specifically, proof of posting solicitations in an online publication for 30 consecutive calendar days and in a print newspaper for one day, as well as proof of utilizing the Small Business Administration and Minority Business Development Agency, must be submitted with the bid package. Failure to provide these specific GFEs by the opening date will result in the bid being deemed non-responsive. Documentation regarding DBE outreach may be submitted up to three business days after the bid closing date.
RT CONTRACTOR CORP

POSTED

about 5 hours ago

DEADLINE

in 8 days
View Details