What are the opening hours?

Monday 8am - 5pm Tuesday 8am - 5pm Wednesday 8am - 5pm Thursday 8am - 5pm Friday 9am - 5pm

Oates Associates, Inc.

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United States
Collinsville, IL
Oates Associates, Inc.

Oates Associates is a multi-disciplined design firm with offices throughout the Midwest.

10/24/2026

Can you guess our Halloween theme? Thanks to Engineers Without Borders USA - Gateway Professional Chapter for hosting another awesome Halloween trivia night! This annual event raises funds for global infrastructure initiatives.

10/22/2026

🎉 Congratulations to Nick Dudeck on completing the GIS Certificate Program at Washington University in St. Louis! This achievement strengthens the geospatial expertise he brings to our team and the projects we serve.

10/21/2026

⛳ Despite a little wet weather, the annual Brian Heil Golf Classic was a great day spent with fellow employee owners. Thanks to everyone who came out, embraced the conditions, and enjoyed some friendly competition on the course. Rain or shine, it’s always a great time together!

10/16/2026

🎃 We had a great time at the Godfrey Trunk or Treat! Thank you to everyone who stopped by our trunk for treats, costumes, and Halloween fun. We always enjoy opportunities to connect with the communities we serve and be part of events that bring people together.

10/12/2026

🌶️ We had a great time at the Belleville Chili Cook-Off this weekend! Thank you to everyone who stopped by our tent and helped make the event a success. We’re grateful to the many Oates volunteers who dedicated their time, including those from Belleville Area Humane Society, and proud to donate our proceeds from the event to support the Belleville Area Humane Society and its mission of caring for animals in need. 🐾

10/08/2026

🌶️ Join us at the Belleville Chili Cook-Off! Oates Associates will be cooking and serving chili, and all proceeds from our chili sales will benefit the Belleville Area Humane Society. Stop by for a bowl, support a great cause, and say hello to our team!

📍 Near First Street, in front of Roundabout Restaurant

10/01/2026

Employee Ownership Month is officially underway! 💙 Employee-owners across all Oates offices showed their Oates pride today, sporting company gear and enjoying a Chick-fil-A breakfast as we kick off a month dedicated to celebrating the employee ownership culture we live every day.

09/28/2026

📐 Day in the Life of a Civil Engineering Intern

From site visits and design tasks to learning from experienced engineers, here’s a glimpse into a day of gaining hands-on experience, developing technical skills, and growing in the profession.

As we’ve connected with students at career fairs this fall, one thing is clear: the future of engineering is bright. We’re excited to continue meeting aspiring engineers and sharing opportunities for internships and entry-level careers at Oates.

Think this could be you? Explore our current positions at:
https://oatesassociates.aaimtrack.com/jobs/

09/18/2026

Trivia, teamwork, and giving back! 🎉 Our team had a fantastic time at SAME's 10th Annual Trivia Night & Silent Auction supporting Dogs for Our Brave St. Louis. We enjoyed the friendly competition and were pleasantly surprised to end the evening with a first-place finish.

09/14/2026

That’s a wrap on another great season in the AEC Softball League! 🥎 A huge thank you to everyone who participated and helped make this season one to remember. We had a lot of fun along the way and can’t wait to do it all again next year.

Address

100 Lanter Court, Suite 1
Collinsville, IL
62234

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	9am - 5pm

Website

http://www.oatesassociates.com/

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