Top-Notch Sign Services Since 1957
Sign Company in Barnhart, MO
Piros Signs is headquartered on Old State Road M in Barnhart, where our in-house shop designs and fabricates signs for businesses across Jefferson County and the St. Louis region. We have built commercial signs since 1957, and when you hire us in Barnhart, the team that builds your sign is just down the road.
Lighted and LED Signs for Barnhart Businesses
We build every kind of commercial sign local businesses need:
- Illuminated signs: LED-lit cabinets and faces that read clearly day and night.
- LED displays and electronic message centers: Programmable displays for retailers, churches, schools, and auto dealers, set up to follow local rules.
- Pylon and high-rise signs: Tall signs for businesses along I-55 and Highway 61/67 that need to be seen from the road.
- Monument signs: Ground-level signs for office parks, medical buildings, churches, and schools.
- Storefront signs: Channel letters and wall signs for retail centers and main street storefronts.
- Digital signs and scoreboards: Scoreboards and digital displays for schools and athletic facilities.
Sign Installation in Barnhart
Our own crews install the signs we build, so one team owns the job from the shop floor to the final inspection, with no handoff to a subcontractor. Learn more about our sign installation services.
Sign Maintenance and Repair in Barnhart
A dark letter or a flickering cabinet tells customers you are closed. Our sign and lighting service team repairs damaged signs, replaces failing lighting, converts older signs to LED, and refaces existing cabinets so you can update your brand without replacing the whole structure.
Signs Built for Barnhart and Jefferson County
Barnhart sits in the middle of Jefferson County’s main business corridors.
- Highway 61/67 (Jeffco Boulevard): Retail, restaurants, and auto businesses from Arnold through Barnhart, Pevely, and Festus, where pylon and monument signs carry the load.
- I-55 interchanges: Businesses near the Barnhart, Imperial, Pevely, and Festus exits need tall signs that read at highway speed.
- Business parks and industrial sites: Monument signs, building signs, and wayfinding for larger properties.
- Churches, schools, and fire districts: Monument signs and LED message boards that keep the community informed.
Sign Permits and Codes in Barnhart
Most of Barnhart is unincorporated Jefferson County, so signs follow the county’s sign regulations in Article XIII of the county zoning code. Sign permits are approved by the county’s Planning Division, and a building permit is issued by Code Enforcement. Nearby cities like Arnold and Festus have their own sign codes.
A few rules shape most sign projects here:
- A single-business ground or pole sign can be up to 175 square feet, and a multi-business ground sign up to 300 square feet, with one per street frontage.
- Freestanding signs must sit at least 10 feet back from any right-of-way or access easement.
- Programmable message boards are allowed for steady messages with simple transitions, while animated effects are restricted.
Piros handles the permit process for you, including drawings, applications, and code review, so your sign is approved before installation day.
Recent Sign Projects Near Barnhart
From school districts and colleges to churches, Piros Signs builds and installs signs across Jefferson County and south St. Louis County. Recent projects near Barnhart include:
- Jefferson College: Directional monument sign at the south entrance of the Hillsboro campus (2025)
- Hillsboro R-3 School District: Three new scoreboards and an electronic sign
- Northwest R-1 High School: Donated and installed a refurbished Daktronics football scoreboard in House Springs
- GraceLife Chapel: Wall and projecting signs on Lemay Ferry Road (2025)
See more of our work on the projects page.
Why Barnhart Businesses Choose Piros Signs
- Headquartered in Barnhart: Our shop, crews, and service trucks are based right here on Old State Road M.
- In-house fabrication: Design and custom sign fabrication under our own roof.
- Family owned since 1957: Decades of experience building signs across Missouri and the Midwest.
- Permits handled for you: We work through Jefferson County’s sign code so you do not have to.
- Service after the sale: Maintenance, lighting upgrades, and repairs from the same team that built your sign.
Serving Barnhart and Jefferson County
Barnhart is home to our headquarters and fabrication shop. Our Holts Summit location serves Jefferson City and Mid-Missouri.
We also serve Arnold, Imperial, Festus, Hillsboro, De Soto, Fenton, and the greater St. Louis region. View our full service area.
Barnhart Sign FAQs
Where is Piros Signs located in Barnhart?
Our headquarters and fabrication shop are at 1818 Old State Rd M, Barnhart, MO 63012. Call (636) 464-0200 to talk with our team.
Do I need a sign permit in Jefferson County?
Yes, for most permanent signs. In unincorporated Jefferson County, the Planning Division approves the sign permit and Code Enforcement issues the building permit. Cities like Arnold and Festus have their own process. Piros handles the application for you.
How big can a business sign be in Jefferson County?
In unincorporated Jefferson County, a single-business ground or pole sign can be up to 175 square feet, and a multi-business sign up to 300 square feet. Height limits depend on the zoning district, so we check your property first.
Can I put an LED message sign on my property?
Yes, in many cases. Jefferson County allows programmable message boards with steady messages and simple transitions. We help you choose and program a display that fits the code.
Do you repair existing signs near Barnhart?
Yes. Our service team repairs damaged signs, replaces failing lighting, converts older signs to LED, and refaces sign cabinets across Jefferson County.
Do you work outside Jefferson County?
Yes. We serve the entire St. Louis region, the Illinois Metro East, and Mid-Missouri through our Holts Summit location.
Ready for a New Sign in Barnhart?
Tell us about your project and we will put together a design and quote for your Barnhart location. Call (636) 464-0200 or request a quote online.