Heneghan and Associates, Inc.

Heneghan and Associates, Inc. Since ‘86 /Civil Engineering & Land Surveying Firm. Vernon, Maryville, IL & Arnold MO Founded in 1986. We are a Civil Engineering&Land Surveying Firm.

We collaborate with landowners & municipalities to
deliver innovative solutions for a variety of projects.
📍Jerseyville, Columbia, Mt. With locations in, Jerseyville, Columbia, & Mt Vernon, IL & Arnold, MO. Our team collaborates with landowners & municipalities to deliver innovative solutions for a variety of projects

🎉 Happy 6th Work Anniversary, Joel!Thank you for six years of dedication, hard work, and contributions to HA. We appreci...
06/11/2026

🎉 Happy 6th Work Anniversary, Joel!

Thank you for six years of dedication, hard work, and contributions to HA. We appreciate all you do and are grateful to have you on our team.

Congratulations on this milestone! 👏

It's National Safety Month!Roadway safety is essential in engineering and surveying. Whether traveling to a site or work...
06/10/2026

It's National Safety Month!

Roadway safety is essential in engineering and surveying. Whether traveling to a site or working near traffic, staying alert and visible helps keep everyone safe.

A peek behind the curtain of the things we see and do everyday. We tend to see things differently - these recent employe...
06/03/2026

A peek behind the curtain of the things we see and do everyday. We tend to see things differently - these recent employee pics caught our eye, and they're worth sharing!

05/29/2026

🌞 School’s out for summer! 🎉
Wishing all students, families, and educators a fun, safe, and adventure-filled break. From everyone at Heneghan Associates, Inc., we hope your summer is full of sunshine, relaxation, and great memories! 🌊☀️
See you in the fall! 🍎✏️

Made ya stop 🐷 — but we’re not talking bacon here.Did you know that “pigging” isn’t just a farm term? In the water treat...
05/27/2026

Made ya stop 🐷 — but we’re not talking bacon here.

Did you know that “pigging” isn’t just a farm term? In the water treatment world, a pig is a piece of equipment used to clean and inspect water pipelines, and it's crucial for maintaining water safety.

At HA, we design water systems with pigging in mind to help municipalities and water companies improve water flow, reduce bacteria, and avoid costly replacements. From old-school “dumb pigs” made of straw to today’s smart, data-collecting pigs, this process helps keep your water clean — and your fire hydrants ready in case of emergency. 🚒💦

Curious about how pigging works or if your system is ready for it? Let’s talk: https://haengr.com/

05/22/2026
At Heneghan Associates, our commitment to our clients is unwavering. Our motto reflects our core values and dedication t...
05/19/2026

At Heneghan Associates, our commitment to our clients is unwavering. Our motto reflects our core values and dedication to delivering exceptional results. Trust in us to bring your vision to life.

🎓 Celebrating Our 2026 Scholarship Recipients! 🎉Heneghan Associates, Inc. is proud to recognize this year’s scholarship ...
05/15/2026

🎓 Celebrating Our 2026 Scholarship Recipients! 🎉
Heneghan Associates, Inc. is proud to recognize this year’s scholarship recipients—one outstanding student from each of our office locations—each awarded a $1,000 scholarship in support of their academic journey.
At HA, we are especially proud to support the next generation of engineers and surveyors, innovators, and leaders who will help shape our communities for years to come.
Please join us in congratulating our scholarship recipients and the entire graduating Class of 2026 on this incredible achievement. We look forward to seeing all that you accomplish!

Most people go to Disney World for the rides—we stop for the survey markers. This little disk might not scream thrill ri...
05/13/2026

Most people go to Disney World for the rides—we stop for the survey markers. This little disk might not scream thrill ride, but it’s a major player in how the magic gets built.

📏 It marks a precise location used for mapping and building with accuracy.
🎯 Without it, Cinderella’s Castle might be off-center, and we just can’t have that.

Address

1004 Illinois 16
Jerseyville, IL
62052

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

Telephone

+16184986418

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