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

LiveFree Webinar — Wednesday, July 22 at 2:00 PM EDT

Register Free →
logo
Get CLEATUSFree Trial
← Back to NAICS Codes
NAICS Code· 237990

Other Heavy and Civil Engineering Construction

This industry comprises establishments primarily engaged in heavy and civil engineering construction projects (excluding highway, street, bridge, and distribution line construction). The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to heavy and civil engineering construction projects (excluding highway, street, bridge, distribution line, oil and gas structure, and utilities building and structure construction). Construction projects involving water resources (e.g., dredging and land drainage), development of marine facilities, and projects involving open space improvement (e.g., parks and trails) are included in this industry. Illustrative Examples: Channel construction Land drainage contractors Dam construction Marine construction Dock construction Microtunneling contractors Dredging (e.g., canal, channel, ditch, waterway) Nuclear waste disposal site construction Earth retention system construction Flood control project construction Park ground and recreational open space improvement construction Railroad construction Golf course construction Subway construction Horizontal drilling (e.g., cable, pipeline, sewer installation) Trenching, underwater Hydroelectric generating station construction Tunnel construction Cross-References. Establishments primarily engaged in--Show more

NAICS 237990 – Other Heavy and Civil Engineering Construction encompasses specialized infrastructure projects that fall outside standard building construction, including earthmoving, site preparation, drainage systems, erosion control, flood control structures, landfill construction, pipeline trenches, and non-residential site development. This sector supports critical public works such as access roads to federal facilities, utility relocation, dam repairs, and environmental remediation sites.

1.5K
Active Contracts
$12.8B
Total Obligations (12mo)
1.2K
Awarded Contracts (12mo)
791
Contractors Awarded (12mo)
-32.9%
YoY Growth

Contract Opportunities

Active solicitations and awarded contracts classified under NAICS 237990 — Other Heavy and Civil Engineering Construction.

Dotted
NAICS 237990 FAQ

Frequently Asked Questions

NAICS code 237990 covers Other Heavy and Civil Engineering Construction. This industry comprises establishments primarily engaged in heavy and civil engineering construction projects (excluding highway, street, bridge, and distribution line construction). The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to heavy and civil engineering construction projects (excluding highway, street, bridge, distribution line, oil and gas structure, and utilities building and structure construction). Construction projects involving water resources (e.g., dredging and land drainage), development of marine facilities, and projects involving open space improvement (e.g., parks and trails) are included in this industry. Illustrative Examples: Channel construction Land drainage contractors Dam construction Marine construction Dock construction Microtunneling contractors Dredging (e.g., canal, channel, ditch, waterway) Nuclear waste disposal site construction Earth retention system construction Flood control project construction Park ground and recreational open space improvement construction Railroad construction Golf course construction Subway construction Horizontal drilling (e.g., cable, pipeline, sewer installation) Trenching, underwater Hydroelectric generating station construction Tunnel construction Cross-References. Establishments primarily engaged in--

Recently Posted in Other Heavy and Civil Engineering Construction

NAICS: 237990
New
SLED
AIRFIELD 2028 ALL PROJECTS (AIP / AUI / CIRCUITS / FOD) CombinedThe contract encompasses a comprehensive suite of airfield infrastructure upgrades at the Port of Seattle, targeting critical systems that ensure operational safety and compliance. Key work includes replacing aging airfield lighting circuits with low megger readings with modern LED fixtures and signage to improve energy efficiency, visibility, and system reliability. Simultaneously, failing pavement segments and essential utilities will be replaced to maintain structural integrity and prevent disruptions to flight operations. Wildlife hazard mitigation is a central component, involving the removal of turf edge dams along runways, taxiways, and access roads to reduce animal attractants, installation of anti-perching devices on airfield signs to deter birds, and addressing ponding issues through regrading and new storm drainage infrastructure to eliminate standing water. Additionally, failing flush fire hydrant access hatches will be replaced to ensure rapid and unimpeded access for emergency response personnel. The project is forecasted under NAICS code 237990 and managed by the Aviation Project Management Group, with Yanet Maldonado serving as the primary point of contact. All work is scheduled to align with the 2028 timeline and is classified under the broader AIP/AUI/CIRCUITS/FOD initiative.
Aviation Project Management Group

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
AIRFIELD 2029 ALL PROJECTS (AIP / AUI / CIRCUITS / FOD) CombinedThe contract involves comprehensive upgrades and repairs to critical airfield infrastructure at the Port of Seattle, focusing on improving safety, efficiency, and compliance with aviation standards. Key work includes replacing aging airfield lighting circuits that show low megger readings with new LED lighting fixtures and signage to enhance visibility and reduce maintenance demands. Pavement and utility systems suffering from deterioration will be fully replaced to ensure structural integrity and operational continuity. Wildlife hazard mitigation efforts will remove turf edge dams along runways, taxiways, and access roads, install anti-perching devices on airfield signs to deter birds, and address ponding issues through regrading and the installation of new storm drainage infrastructure. In addition, failing flush fire hydrant access hatches will be replaced to ensure reliable emergency water access. The project is classified under NAICS code 237990 and is being managed by the Aviation Project Management Group under the Port of Seattle, with Yanet Maldonado listed as the primary point of contact for inquiries.
Aviation Project Management Group

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
AIRFIELD 2030 ALL PROJECTS (AIP / AUI / CIRCUITS / FOD) CombinedThe contract encompasses a broad range of airfield infrastructure improvements at the Port of Seattle, focusing on modernization, safety, and operational efficiency. Key components include replacing aging airfield lighting circuits with low megger readings with new LED fixtures and signs to enhance visibility and reliability, upgrading failing pavement and critical utilities to ensure structural integrity and longevity, and implementing wildlife hazard management by removing turf edge dams, installing anti-perching devices on signs, and addressing ponding through regrading and new storm drainage systems. Additional work involves replacing deteriorated flush fire hydrant access hatches to ensure emergency response readiness. All work is part of the Airfield 2030 initiative, aligned with long-term aviation infrastructure planning, and is being managed by the Aviation Project Management Group under the Port of Seattle. The solicitation was posted in July 2026 and falls under NAICS code 237990 for other heavy and civil engineering construction. Primary point of contact for inquiries is Yanet Maldonado, reachable via phone and email provided by the Port. The project is intended to enhance safety, reduce maintenance costs, and support future airfield capacity and compliance with aviation standards.
Aviation Project Management Group

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
Jack Block Park Pier ReplacementThe contract pertains to the demolition of an end-of-life pier and the construction of a new pier at Jack Block Park, along with associated repairs to the pier plaza. The work is being managed by the Port of Seattle under the Northwest Seaport Alliance and is categorized under NAICS code 237990, indicating it falls under other heavy and civil engineering construction. The solicitation was posted on July 13, 2026, and is currently in forecast status, signaling an upcoming procurement opportunity. The primary point of contact for the project is Yanet Maldonado, reachable via phone or email, with Valerie Huffman listed as the project manager for additional inquiries. Performance of the work will take place at Jack Block Park, though specific city and state details for the place of performance are not provided in the data. All communications and further details about the solicitation can be accessed through the Port of Seattle’s online system.
Northwest Seaport Alliance (NWSA)

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
Deaerator (DA) and Condensate System UpgradesThe contract involves the replacement of the Deaerator and Condensate tanks within the Central Mechanical Plant, aiming to modernize and improve the efficiency of the steam and water system infrastructure. This project is part of a broader initiative by the Port of Seattle’s Aviation Project Management Group to enhance facility reliability and performance, targeting critical mechanical systems that support airport operations. The work requires specialized expertise in industrial plumbing, pressure vessel installation, and system integration, with the successful bidder expected to manage all aspects of removal, disposal, procurement, installation, and testing of new equipment in compliance with safety and operational standards. The project is anticipated to be awarded following a formal solicitation process, though the specific solicitation number has not yet been issued. The North American Industry Classification System code 237990 indicates the work falls under other heavy and civil engineering construction, suggesting the scope may include structural modifications, piping upgrades, and coordination with existing utility systems. Leila Gonzalez-Rigatto serves as the primary point of contact for inquiries, with Matthew Piccolo overseeing project implementation. All work must be performed at the Central Mechanical Plant location, and interested parties should monitor the official Port of Seattle portal for the upcoming solicitation release.
Aviation Project Management Group

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
2027 Airfield Project - Contract 1The Airfield Recircuiting and Pavement Replacement project involves replacing aging airfield lighting circuits with low megger readings, upgrading to energy-efficient LED lighting fixtures and signage, and replacing deteriorating pavement and critical utilities across the airfield. The scope includes comprehensive infrastructure modernization to enhance operational safety and reliability while reducing long-term maintenance costs. This work will ensure compliance with current aviation standards and improve the resilience of airfield systems under varying environmental conditions. Additionally, the project encompasses Wildlife Hazard Management through the removal of turf edge dams along runways, taxiways, and access roads, installation of anti-perching devices on airfield signs, and mitigation of ponding by regrading terrain and installing new storm drainage infrastructure. Fire hydrant access hatches that have failed or are deteriorating will be replaced to ensure rapid and unobstructed access for emergency response. The project is forecasted under the Port of Seattle’s Aviation Project Management Group, with primary contact points available for inquiries, and is classified under NAICS code 237990 for other heavy and civil engineering construction.
Aviation Project Management Group

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
2027 Airfield Project - Contract 2The contract, titled 2027 Airfield Project - Contract 2, issued by the Port of Seattle through its Aviation Project Management Group, encompasses a comprehensive set of airfield infrastructure upgrades aimed at enhancing safety, efficiency, and compliance. Key work includes replacing airfield lighting circuits with low megger readings, installing modern LED lighting fixtures and signs to improve visibility and reduce energy consumption, and upgrading failing pavement and critical utilities to ensure structural integrity and operational reliability. Additionally, wildlife hazard management measures are included, such as removing turf edge dams along runways and taxiways, installing anti-perching devices on airfield signs to deter birds, and addressing ponding issues through regrading and new storm drainage infrastructure to minimize wildlife attraction and water accumulation. Further scope involves replacing outdated fire hydrant access hatches with improved, more accessible units to support emergency response readiness. The project is classified under NAICS code 237990 and is posted as a forecast with no set-aside designation, indicating it is open to general competition. Primary point of contact for inquiries is Moraa Omwega, with David Neds serving as the project manager, and all communications should be directed via their provided contact details. The contract is part of long-term planning for the airport’s airfield systems and will require coordination across multiple disciplines to ensure minimal disruption to ongoing airfield operations while achieving full compliance with aviation safety standards.
Aviation Project Management Group

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
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 involves other heavy and civil engineering construction. The solicitation is currently forecasted with a posted date of July 13, 2026, and no set-aside information has been specified. The place of performance is at Terminal 18, though specific city or state details are not provided. Primary point of contact for inquiries is Angela Peterson, reachable via phone at 206-787-4813 or email at peterson.a@portseattle.org, with Crystal Cuellar listed as the Project Manager for further project-specific coordination. Further details and documentation can be accessed through the provided UI link.
Waterfront Project Management

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
Həʔapus Park Redevelopment - ConstructionThe Həʔapus Park Redevelopment – Construction project aims to significantly enhance public amenities and accessibility within the park through a series of infrastructure upgrades including new restrooms, improved pathways and lighting, a boot washing station, dog-friendly features, wayfinding and interpretive signage, and a hand-carrying boat launch. The work will involve both upland and in-water construction activities that must be carefully phased to comply with environmental permitting requirements and to avoid disruption to tribal fisheries, with all major elements targeted for substantial completion by the second quarter of 2028. The project is managed by the Port of Seattle through its Waterfront Project Management division, with primary coordination handled by Angela Peterson and project oversight provided by Julie Yun. All work is governed under NAICS code 237990 and is being solicited under an open forecast process with no set-aside designation, indicating potential eligibility for full and open competition among qualified contractors.
Waterfront Project Management

POSTED

about 20 hours ago

DEADLINE

N/A
View Details
NAICS: 237990
New
SLED
Site Preparation and EarthworkThe contract titled Site Preparation and Earthwork involves clearing, grading, excavation, and soil stabilization work necessary for the athletic facility footprint and associated access roads. It is a subcontract under NAICS code 237990, issued by the Telfair County Board of Education in Georgia, with a posted date of July 12, 2026, and a response deadline of August 13, 2026. All work must be performed at the designated project location, though specific city or zip details are not provided in the contract data. Interested parties must submit proposals by the specified deadline to be considered for award, and the work is critical to preparing the site for construction of athletic infrastructure.
Telfair County Board of Education

POSTED

1 day ago

DEADLINE

in about 1 month
View Details
NAICS: 237990
New
SLED
Excavation and Site GradingThe contract titled Excavation and Site Grading covers all earthwork activities necessary for building foundations and utility installations, including excavation, trenching, backfilling, and site grading. This subcontract is open for response until July 30, 2026, with a posting date of July 12, 2026, and is classified under the NAICS code 237990, which pertains to other heavy and civil engineering construction. The work is being managed by the state of Iowa, with performance expectations tied to locations within the state, though specific city or zip details are not provided. Interested parties must respond through the designated online portal linked in the contract information, and no set-aside provisions or special organizational type restrictions are indicated. All work must meet the technical requirements for civil construction and infrastructure support, ensuring compliance with standard earthmoving and grading practices.
Iowa

POSTED

1 day ago

DEADLINE

in 17 days
View Details
NAICS: 237990
New
DIBBS
Excavation and EarthworkThe contract titled Excavation and Earthwork encompasses all site excavation, grading, trenching, and backfilling activities necessary for the installation of foundations and utilities. This subcontract, issued under the NAICS code 237990, is managed by the Strategic Acq Program Directorate within the Department of Defense and is open for response until July 27, 2026. Work is to be performed at an unspecified location with no designated city, state, or zip code provided, and the contract does not specify any set-aside provisions or small business preferences. Bidders must submit proposals by the stated deadline, and further details can be accessed via the provided DIBBS link.
STRATEGIC ACQ PROGRAM DIRECTORATE

POSTED

1 day ago

DEADLINE

in 14 days
View Details

Win Contracts in Other Heavy and Civil Engineering Construction

Get AI-powered intelligence on NAICS 237990 procurement

Real-time contract opportunities for NAICS 237990 (Other Heavy and Civil Engineering Construction)

AI-powered matching based on your business capabilities and past performance

Competitive analysis of contractors winning awards in this industry

Automated alerts when new opportunities are posted

Miguel
Hillary
Keith Deutsch
Christine

Join 650+ contractors already using CLEATUS