What Walsh Construction Co. does

Walsh Construction Co. is a private heavy civil construction company headquartered in Portland, Oregon, founded in 1949. The firm operates as a general contractor specializing in large-scale civil infrastructure projects — including transit tunnels, subway system expansions, wastewater treatment facility modernization, and healthcare facility construction — typically delivered through joint venture arrangements with Tier-1 construction firms such as Skanska and Traylor Bros. Notable current engagements include the $1.29B Hudson Tunnel Project Package 1C (twin tunnels beneath the Hudson River), the approximately $1B Second Avenue Subway Phase II contract with the MTA in New York, and the $200M San Jose-Santa Clara Regional Wastewater Facility modernization as lead contracting partner with Jacobs.

The company's product surface is purely physical construction services, with no standalone software or platform offering. Core technical capabilities include tunnel boring and liner installation for underwater and urban rail applications, subway station structural shell construction, and biosolids treatment infrastructure upgrades with documented outcomes such as a 36% increase in biogas output and a 74 wet tons-per-day reduction in biosolids production at the San Jose-Santa Clara facility. The firm also participates in healthcare facility construction, evidenced by work on the University of Kentucky Cancer and Advanced Ambulatory Building.

Walsh's business model is project-based, one-time contracting through competitive government procurement. Revenue is generated as a general contractor fee (or JV share) on large public-sector infrastructure awards, with end-customers primarily consisting of state and local transportation authorities, municipal governments, and educational institutions. Go-to-market is via direct bidding on transit authority, municipal, and federal agency procurements; there is no disclosed marketing channel, pricing transparency, or recurring-revenue component. Operating geographies span New York, California, and Kentucky in addition to the Oregon headquarters, with no global footprint. The firm employs between 251 and 500 people and has no disclosed parent company, institutional investors, or public ownership.

Name

Walsh Construction Co.

Legal name

Walsh Construction Co.

Website

https://walshconstructionco.com

Company type

Private

Founded year

1949

Operating status

Operating

Headcount range

251–500 employees

Short description

Walsh Construction Co. is a private Portland-based heavy civil general contractor founded in 1949 that delivers large-scale transit tunnels, subway expansions, wastewater facility modernizations, and healthcare buildings primarily for U.S. government agencies through joint ventures with firms such as Skanska and Traylor Bros.

Ownership category

akta.pro rank

Product category

Heavy Civil Infrastructure Construction

NAICS

Heavy and Civil Engineering Construction (237), Utility System Construction (2371), Water and Sewer Line and Related Structures Construction (237110)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Water, Sewer, Pipeline, Comm & Power Line Construction (1623), General Bldg Contractors - Nonresidential Bldgs (1540)

akta.pro primary industry

Tunnels & Underground Rail Civil Construction (IMAFAFAE)

akta.pro secondary industry

Tunnel Construction (Road, Rail, Utility) (IMAFAEAC)

Keywords

• Civil infrastructure construction
• Heavy civil construction
• Tunnel boring services
• Transit infrastructure projects
• Wastewater facility construction

Headquarters

HQ city

Portland

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Others

Revenue model

1. Infrastructure Construction Projects: General contractor for large-scale civil infrastructure projects including transit systems, tunnels, and wastewater facilities through joint venture arrangements with major construction firms.

Core offering

Walsh Construction Co. is a general contractor delivering large-scale civil infrastructure construction services, including transit tunnels, subway systems, railroad tunnels beneath major waterways, municipal wastewater treatment facility modernization, and healthcare facility construction. The company primarily executes this work through multi-partner joint ventures with firms such as Skanska and Traylor Bros., securing contracts through competitive bidding with government transportation and municipal agencies.

Product overview

Walsh Construction Co. operates as a joint venture partner in large-scale civil infrastructure construction projects. The company participates in multi-partner construction joint ventures (typically with Skanska and Traylor Bros.) focused on complex public infrastructure including urban transit systems (subway stations and expansions), railroad tunnel construction beneath major waterways, municipal wastewater treatment facility modernization, and healthcare facility construction. Walsh Construction does not appear to offer a standalone software product, platform, or technology offering—its business is purely construction services.

Differentiator

Problem solved

Functional benefit

Products and services

• Heavy Civil Construction Large-scale civil infrastructure construction services including subway systems, tunnel boring, and transportation projects delivered through joint ventures with partners such as Skanska and Traylor Bros., serving government transportation agencies.
• Transit Infrastructure Construction Construction and expansion of urban transit systems including subway stations and rail tunnels, exemplified by the Second Avenue Subway Phase II project in New York.
• Tunnel Construction Specialized tunnel boring and liner installation services for rail and transit projects, including work beneath major waterways such as the Hudson River, encompassing twin tunnel boring, cross passages, and ground stabilization.
• Wastewater Treatment Facility Construction Construction and modernization of municipal wastewater treatment infrastructure, including biosolids treatment upgrades, mesophilic digester installations, FOG receiving stations, and seismic resiliency improvements for municipal governments.
• Healthcare Facility Construction Construction of healthcare facilities including hospitals and ambulatory buildings, as evidenced by work on the University of Kentucky Cancer and Advanced Ambulatory Building.

Quantifiable outcome

• Increased biogas output by up to 36% and reduced biosolids production by up to 74 wet tons per day

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Eight partnerships are on record, tiered core and minor.

• SkanskacoreStrategic or Co-development Partner · 1 June 2026Joint venture partner with Traylor Bros. and Walsh Construction for the $1 billion Second Avenue Subway Phase II contract with MTA. Skanska's share is USD 498M covering design and construction of new station structural shells between 105th and 110th Streets in New York. Work scheduled to begin May 2026 with completion in Q3 2030.
• Traylor Bros., Inc.coreStrategic or Co-development Partner · 1 June 2026Joint venture partner with Skanska and Walsh Construction for the Second Avenue Subway Phase II project in New York. Part of three-way joint venture structure for the $1 billion MTA contract.
• SkanskacoreStrategic or Co-development Partner · 4 May 2026Joint venture partner in the $1.29 billion Hudson Tunnel Project Package 1C awarded by Gateway Development Commission. Project involves boring two parallel single-track tunnels approximately 7,250 feet beneath the Hudson River between Weehawken, New Jersey and Manhattan's West Side, along with tunnel liner installation, nine cross passages, and ground stabilization work.
• Traylor Bros., Inc.coreStrategic or Co-development Partner · 4 May 2026Joint venture partner with Skanska and Walsh Construction for the $1.29 billion Hudson Tunnel Project Package 1C. Leading the Hudson River Tunnel Section as the primary contractor for one of the most urgent passenger rail infrastructure investments in the United States.
• JacobscoreStrategic or Co-development Partner · 21 January 2026Walsh Construction serves as lead contracting partner supporting Jacobs as the progressive design-build contractor for the $200 million San Jose-Santa Clara Regional Wastewater Facility modernization project. Project focuses on modernizing biosolids treatment infrastructure with innovative design expected to increase biogas output by 36%.
• University of KentuckyminorStrategic or Co-development Partner · 1 August 2025Collaboration with University of Kentucky and Goodwill Kentucky on an eight-week Construction Industry Pre-Apprenticeship Program launched August 1, 2025, providing hands-on training, mentorship, and pathways into Registered Apprenticeships to address construction workforce shortages.
• Structural TechnologiesminorImplementation/ SI/ Consulting PartnerLead contracting partner alongside Walsh Construction supporting Jacobs on the San Jose-Santa Clara Regional Wastewater Facility modernization project.
• Goodwill KentuckyminorStrategic or Co-development PartnerPartnership with University of Kentucky and Walsh Construction for the Construction Industry Pre-Apprenticeship Program addressing construction workforce shortages in Kentucky.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Jacobs Solutions: Walsh's actual design-build partner on the San Jose-Santa Clara Wastewater Facility. Comparable on water/wastewater and transit infrastructure delivery, with broader engineering and program management scope.
• AECOM: Global infrastructure consulting and construction firm overlapping on transit, tunnel, and water infrastructure design-build delivery. Comparable government-client base and mega-project scale, but operates across a much broader portfolio.

Direct peers

• Skanska USA: U.S. arm of Skanska, a global construction firm and Walsh's JV partner on both the Hudson Tunnel Project and Second Avenue Subway Phase II. Direct overlap in heavy civil, transit tunnel, and underground station construction for government clients.
• Traylor Bros., Inc. Heavy civil and underground construction specialist, Walsh's JV partner on both flagship transit mega-projects. Direct peer in tunnel boring, underground transit, and marine/heavy infrastructure.
• Kiewit Infrastructure: One of North America's largest heavy civil contractors with deep tunnel, transit, and bridge experience. Comparable on scale, government client base, and tunnel/transit specialization.
• Tutor Perini Corporation: Major civil contractor specializing in large-scale transportation infrastructure including tunnels, rail, and underground transit. Direct comparable on mega-project government transit work and JV-heavy execution.
• Granite Construction: Public-listed heavy civil construction firm with comparable tunnel, transit, and water infrastructure portfolio serving state DOTs and federal agencies.
• Dragados USA: U.S. subsidiary of ACS Group focused on heavy civil and tunnel projects, including major transit and water infrastructure. Direct overlap with Walsh on tunnel and underground construction.
• Frontier-Kemper Constructors: Specialty tunnel and underground heavy civil contractor. Direct peer in tunnel boring, underground station, and heavy infrastructure construction methods.
• Barnard Construction Company: Heavy civil contractor specializing in tunnels, dams, and water/wastewater infrastructure. Direct overlap with Walsh on tunnel transit and municipal wastewater work.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/walshconstco
• Facebookfacebook.com/walshconstructionco

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Walsh Construction Co.