Janke General Contractors, Inc.

What Janke General Contractors, Inc. does

Janke General Contractors, Inc. is a privately-held civil construction firm founded in 2001 by Steve Janke and headquartered at 1224 Mount View Lane in Athens, Wisconsin. The company provides specialized infrastructure construction services spanning highway and pedestrian bridges, marine construction, dam construction, lock reconstruction, box culverts, utility construction, grading, restoration, and custom fabrication. A core operational asset is its 20,000 SF in-house fabrication facility, which enables self-performed steel fabrication, quality control, and accelerated production timelines for project components. The firm also offers consultation, engineering, project management, and design-build services alongside its core construction work.

Revenue is generated through project-based construction contracts awarded via two channels: competitive public bidding — primarily through the Wisconsin Department of Transportation (WisDOT) bid letting process and municipal/county procurement — and direct negotiation with private-sector clients. Customers are concentrated in state and local government agencies across Wisconsin and the broader Midwest, including WisDOT, Dane County, Dodge County, City of Menasha, and Coon Lake Park. Notable projects include the $5.9 million Lower Yahara River Trail Phase One (longest bicycle bridge in Wisconsin), the Coon Lake Boardwalk (64 helical piers installed through a frozen lake in 25 days), and the Dodge County Historic Bridges restoration (completed one month ahead of schedule). The firm was recognized as an ENR Midwest Top Contractor in 2018 and participates in WisDOT's DBE Program.

Name

Janke General Contractors, Inc.

Legal name

Janke General Contractors, Inc.

Website

https://jankegeneral.com

Company type

Private

Founded year

2001

Operating status

Operating

Short description

Janke General Contractors is a privately-held Wisconsin civil construction firm providing bridge, marine, dam, lock reconstruction, utility, and custom fabrication services to government agencies and private clients across the Midwest.

Ownership category

akta.pro rank

Product category

Civil Construction Services

NAICS

Heavy and Civil Engineering Construction (237), Other Heavy and Civil Engineering Construction (237990)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro industry

PRIMARYIMAFAAAG

Public Works General Contracting

Industrials, Manufacturing & Construction/Construction & Civil Engineering/General Contracting & Construction Management

Keywords

• Civil construction services
• Bridge construction services
• Marine construction services
• Heavy infrastructure contracting
• Structural steel fabrication

Headquarters

HQ city

Athens

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales, Others

Revenue model

1. Civil Construction Project Contracts: Revenue is generated through project-based construction contracts with government agencies and private clients. Projects are bid competitively or negotiated directly, with payment received upon completion of defined project milestones or deliverables.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels3 records

Core offering

Janke General Contractors is a civil construction firm that builds public infrastructure for government and private clients across the Midwest. Core services include dam construction, lock reconstruction, highway and pedestrian bridges, box culverts, large parks and recreational facilities, utility construction, and in-house steel fabrication. The company also provides consultation, engineering, project management, and design-build services, supported by its own 20,000 SF fabrication shop in Athens, Wisconsin.

Product overview

Janke General Contractors, Inc. is a construction company offering a unified set of civil infrastructure services rather than a software product platform. The core offerings include dam construction, lock reconstruction, highway and pedestrian bridges, box culverts, large parks and recreational projects, and utility construction. The company operates its own 20,000 SF fabrication facility and provides consultation, engineering, project management, and design-build services to government agencies, businesses, and private parties throughout the Midwest. Notable named projects include the Coon Lake Boardwalk, McFarland/Lower Yahara River Trail (the longest bike path in Wisconsin), De Pere Riverwalk, Korean War Memorial Improvements, Railroad Trestle/Trail Bridge Conversion, and WisDOT Dodge County Historic Bridges restoration.

Differentiator

Problem solved

Functional benefit

Products and services

• Dam Construction Construction services for dam projects, including design-build capabilities and engineering consultation for local and state government clients across the Midwest.
• Lock Reconstruction Reconstruction services for lock systems as part of marine construction capabilities for waterways infrastructure owned by public agencies.
• Highway and Pedestrian Bridges Construction of highway bridges and pedestrian bridges, including notable long-span boardwalk trails such as the longest bike path in Wisconsin.
• Box Culverts Installation and construction of box culverts as part of road and drainage infrastructure projects for government clients.
• Parks and Recreational Projects Large-scale parks and recreational infrastructure including boardwalks, trail bridges, and wildlife viewing piers for county and municipal clients.
• Utility Construction Utility construction services for infrastructure projects including bridge work, marine construction, and site restoration for public and private clients.
• Fabrication Services In-house 20,000 SF fabrication facility for manufacturing custom structural steel components and panels used in Janke's construction projects and for external clients.
• Design-Build Services Design-build project delivery combining engineering, project management, fabrication, and construction under a single contract for civil infrastructure clients.

Quantifiable outcome

• Dodge County Historic Bridges project completed one month ahead of schedule
• +2 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Wisconsin Department of Transportation (WisDOT)coreStrategic or Co-development PartnerOngoing working relationship for civil infrastructure projects. WisDOT awards contracts to Janke for bridge construction, trail development, and transportation infrastructure projects. Janke participates in WisDOT's DBE (Disadvantaged Business Enterprise) Program, indicating a collaborative relationship to support diversity in contracting.
• Dane CountycoreStrategic or Co-development PartnerDane County awarded Janke a $5.9 million contract for the Lower Yahara River Trail Phase One project, the longest bike bridge in Wisconsin. This represents a significant public infrastructure partnership for trail and bridge construction.
• Engineering News-Record (ENR)minorOthersENR recognized Janke as one of the Top Contractors in the Midwest for 2018, providing third-party industry validation of the company's market position and reputation.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Lunda Construction Company: Wisconsin-based bridge and heavy civil contractor with a similar Midwest DOT project mix. Lunda competes head-to-head with Janke on highway and pedestrian bridge work and shares comparable fabrication and marine capabilities.
• Kraemer North America: Wisconsin-rooted heavy civil contractor (formerly Edward Kraemer & Sons) performing bridge, dam, and infrastructure work. Direct overlap with Janke on heavy/civil public works and bridge construction in the Midwest.
• Zenith Tech, Inc. Wisconsin-based heavy civil contractor specializing in bridges, foundations, and marine construction. Zenith Tech competes with Janke for the same WisDOT and municipal bridge/marine bids in Wisconsin.
• Michels Corporation: Large Wisconsin-headquartered heavy civil, utility, and infrastructure contractor. Michels overlaps directly with Janke on utility construction, marine work, and large bridge/civil projects across the Midwest.

Broad incumbents

• Walsh Group (Walsh Construction): Large national infrastructure and heavy civil contractor with active Midwest operations. Walsh bids on many of the same DOT, bridge, and public infrastructure projects as Janke at larger scale.
• Sterling Construction Company: Heavy civil contractor focused on transportation, bridge, and water infrastructure projects across the U.S. Comparable public-works project mix and customer base, with broader geographic reach than Janke.
• M.A. Mortenson Company: Major Midwest-based general contractor with a significant heavy civil and infrastructure practice. Mortenson competes with Janke on larger civil/infrastructure bids across the region and offers broader capabilities.
• Granite Construction: National heavy civil contractor with strong bridge, transportation, and water-resource capabilities. Competes with Janke on state DOT and federal infrastructure bids as an incumbent national player.
• Ames Construction: Heavy civil contractor performing bridge, highway, rail, and marine work across the Midwest and Mountain West. Overlaps with Janke on bridge and heavy infrastructure projects, though at larger project size.

Regional players

• Veit & Company, Inc. Minnesota-based heavy civil and specialty contractor with bridge, marine, and utility work. Comparable Midwest regional contractor serving neighboring state DOTs and similar public infrastructure customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/janke-general-contractors-inc.

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Janke General Contractors, Inc.