Data Center Construction in Duncan, Oklahoma

A powered shell in Duncan begins with a choice most owners make too late: which of the city's industrial parks gives the building the cleanest path to a utility feed, a fiber route and a truck court. We build data center shells, mission-critical slabs, generator yards and cooling pads for operators who want south-central Oklahoma ground without the congestion of the metro, and we start every Stephens County job by walking the parcel with the utility and the city before a drawing is released.

Duncan has three industrial parks to choose from, and a report from October 2022 said the Eastland, Northland and South parks share $1.4 million in federal ARPA funds and $1 million in state PREP money. That public money tends to go into roads, water and sewer on the park side of the property line, which matters to a data center buyer because every off-site utility we do not have to pay for is budget that returns to the building. Our permitting and utility interconnection work is built around finding out, early, what the park already has and what the site still needs.

The city sits on U.S. Route 81 and State Highway 7, which gives heavy electrical gear and precast a straight delivery path without a trip through downtown. This page describes what we build in Duncan, how we sequence it, and what we ask an owner to settle before breaking ground.

The Eastland, Northland and South industrial parks are not interchangeable for a mission-critical building. A park next to a transmission corridor and a park next to a gas main and a rail siding suit different loads, and we look at the one-line distance to the nearest substation before we look at acreage. The public funding reported in 2022 for these parks is useful to read as a clue about where roads and utilities are being improved, though we confirm every improvement with the city rather than assume it.

For an enterprise or colocation operator the question is usually phasing. A first building on a park lot, with a second hall reserved on the same lot, is a smaller commitment than a full campus, and it lets the utility staff the load increase. We cover that approach on our phased expansion build-outs page, and it fits Duncan lots well because the first phase can be sized to what the local feeder can serve today.

Halliburton Field, two miles south of town and owned by the City of Duncan, has a concrete runway listed at 6,326 feet long and 100 feet wide. We mention it because airport-adjacent parcels carry height and lighting questions that belong in the first week of feasibility, not the fifth month of design. A tilt-up or precast shell near the field needs a review of any crane height and any rooftop equipment before the steel or panels are ordered.

Inside the shell, we manage the mission-critical concrete slabs: flatness-controlled floors for rack rows, thickened pads under UPS and switchgear, and trench or sleeve layouts for future cable tray and cooling pipe. We pour the equipment pads for generators and chillers in the same mobilization as the building slab so the cure schedule does not hold the electricians.

Oklahoma has no state license for general contracting, but trade work is licensed, and the Uniform Building Code Commission sets statewide minimum codes that cities adopt with their own amendments. Many cities still list the editions while the state has adopted newer International Codes, so the first call on a Duncan project goes to the building department to learn which edition and which local amendments govern the permit set.

We carry that answer into the drawings, the structural loads and the electrical scope so the permit review is a confirmation instead of a redesign. Where the NEC edition matters to a switchgear or generator package, we state the edition in the bid documents and ask the engineer of record to do the same, so the owner is never comparing proposals built on different code years.

The National Weather Service Norman office lists an EF3 tornado on November 3, 2024 that ran from 5 miles south of Comanche to 7 miles northwest of Velma in Stephens County and injured 6 people. A November event is a useful reminder for a mission-critical owner: the storm season does not end in June, and a building under construction is most exposed before the roof diaphragm and wall panels are tied together.

On Duncan jobs we plan temporary bracing, panel erection windows and laydown of loose material around the forecast, and we keep a written shelter and stop-work plan on site. For the finished building, the roof, the louvers on cooling plant and the fuel storage are the elements we detail for wind-borne debris, because a hall that survives a storm but loses its generator or its chillers has not done its job.

A Duncan data center needs fuel and power on the same footing as the hall. Our generator yards and fuel systems scope covers the slab, containment, bollards and conduit, and we coordinate the fiber lateral with the carrier through our fiber and telecom trenching scope so the trench is open once instead of twice.

Owners comparing Duncan with other southwest Oklahoma options often look at Lawton and Chickasha as well. We build in all three and will say plainly which parcel suits a given load. Utilities and power developers in the area can start with our page for utilities and power developers.

Send us the parcel, the target load and the utility you expect to serve it. We will tell you what the site needs before design starts and what each phase is likely to involve. Our preconstruction and estimating group can return a site review in plain terms.

Which Duncan industrial park should a data center pick?

It depends on the distance to a substation or transmission line, the fiber route and the truck access, in that order. The Eastland, Northland and South parks each have different frontage and utilities, so we walk each lot with the city and the utility. We usually recommend a feasibility review of two candidate lots before an owner commits to a purchase.

Does being near Halliburton Field create design limits?

It can. Halliburton Field is two miles south of town with a concrete runway, and airport-adjacent parcels may carry height and lighting review for cranes and rooftop equipment. We raise those questions during feasibility so panel erection, mast heights and any exterior lighting are cleared before steel or precast is ordered.

Which building code edition will apply in Duncan?

Statewide minimum codes are set by the Oklahoma Uniform Building Code Commission, and the state has adopted newer International Codes, but cities adopt and enforce their own editions and amendments. We confirm the edition with the building department for each permit and write it into the bid documents.

How do you deal with storm season on an active site?

We stage panel and steel erection around the forecast, brace walls and roof framing until the diaphragm is complete, and keep a shelter plan on site. Finished buildings get wind-rated cladding and protected equipment penetrations. The point is to keep both the crew and the schedule out of a storm's way.

Can the first phase be small and expand later?

Yes. Many owners start with a single hall and an electrical room, then reserve pad space for a second hall and more generators. We lay out the site utilities so the second phase connects without tearing out the first, which is how we approach phased expansion.