IUOE Local 139

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IUOE Local 139 We are a member-based organization of heavy equipment operators. Learn more at IUOE139.org. The union has over 10,000 members and is headquartered in Pewaukee.

Established in 1902, Operating Engineers Local 139 is a statewide trade union that primarily represents skilled Operators of heavy construction equipment and mechanics who service the machines. Local 139 also maintains district offices in Madison, Appleton, and Altoona, as well as a state-certified training school for Operating Engineers in Coloma. This page is moderated. Posts that are disrespectful, vulgar, and unreasonably negative will be deleted. Problem users will be banned.

Congratulations to our new members who took the Oath of Obligation at the General Membership Meeting in Altoona! Welcome...
10/10/2026

Congratulations to our new members who took the Oath of Obligation at the General Membership Meeting in Altoona! Welcome to Local 139!

10/10/2026

General Membership Meeting - Altoona
Join your fellow 139 Brothers and Sisters at the General Membership Meeting in Altoona today at 10:00 a.m. to 12:00 p.m.

A well-earned sendoff for Operator John Probst! Pictured with his La Grange Crane Service crew in Racine County on his f...
09/30/2026

A well-earned sendoff for Operator John Probst! Pictured with his La Grange Crane Service crew in Racine County on his final day before retirement. Congratulations, John, and best wishes in retirement! 🎉

📸 Business Agent Kele Schneller

Congratulations to the new members sworn in tonight at the District B meeting in Madison!
09/15/2026

Congratulations to the new members sworn in tonight at the District B meeting in Madison!

09/10/2026

Exploring the project site, we spotted intriguing hidden tunnels, including a notable brick archway. Significant challenges arose with the coffer dam, requiring tightened sheeting and concrete pouring to seal it for draining and subsequent work on the abutment.

33 new members! Congratulations and welcome to our newest Brothers and Sisters sworn in at the District A meeting in Pew...
09/10/2026

33 new members! Congratulations and welcome to our newest Brothers and Sisters sworn in at the District A meeting in Pewaukee.

09/08/2026

Address

N27W23233 Roundy Drive
Pewaukee, WI
53072

Opening Hours

Monday 7am - 4:30pm
Tuesday 7am - 4:30pm
Wednesday 7am - 4:30pm
Thursday 7am - 4:30pm
Friday 7am - 4:30pm

Telephone

+12628960139

Website

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