Data Center Construction in New Braunfels, Texas

A data center site on the Interstate 35 corridor between San Antonio and Austin has to be judged on power first and ground second, and we build in that order. In New Braunfels we start by asking which substation will serve the parcel, how many megawatts it can deliver and in what year, then we work back to the shell, the generator yard, the cooling plant and the trench that carries the fiber entrance. A site that cannot answer the first question does not need a building yet, and we say so during preconstruction rather than after the foundation is poured.

The city sits along the Balcones Fault, according to Wikipedia, with the Comal River winding about three miles through town before it meets the Guadalupe. For a mission-critical owner that is a geotechnical statement as much as a map detail. Limestone, shallow rock, fractured zones and drainage swales all change how we excavate, how we pour a data hall slab and where we put heavy chiller pads. We treat the fault line as a prompt for borings at every corner of the building footprint, not as a reason to avoid the market.

New Braunfels is also an industrial town in the making. A recent council action on a large tract near Kohlenberg Road and FM 1101 shows the city assembling land for future industrial, commercial or institutional use, and that kind of land bank is where an operator, a developer or a utility partner can find the acreage a campus needs. Our job is to turn raw acreage into a pad that can accept a substation tie, a building and a phase two.

Where the Edwards Plateau meets the coastal plain, the soil profile can change within a few hundred feet. One end of a building pad may sit on shallow limestone while the other sits on clay that swells and shrinks with the weather. The state has published research on how to compute potential vertical rise in expansive clays, and the lesson applies here: a data hall floor carries rows of cabinets and a rated load, so we want the subgrade characterized before we commit to a slab thickness or a pier schedule. Our mission-critical concrete slabs work is built on that discipline.

Rock excavation is slower than dirt excavation and it drives cost, so we price it from boring logs and rock-line contours instead of allowances. Trenching for duct banks through limestone calls for different equipment than trenching through fill, and the route of the underground electrical service often decides the schedule for the whole project. We lay out those runs early, as described on our page for electrical duct banks and service entrances, so the rock is found on paper and not with a bucket.

The typical New Braunfels job begins with a shell and core: tilt-wall or precast walls, a roof deck on structural steel, a slab on grade with the flatness the raised-floor or slab-on-grade equipment requires, and the loading and receiving area that lets crews bring gear in without damaging the envelope. Outside the walls we build the generator yard with its pads, fuel storage and containment, the electrical yard where medium-voltage gear lands, and the cooling plant pad for chillers, pumps and towers.

Edge and enterprise buyers in a mid-sized metro often want something smaller and faster than a hyperscale campus. For them we construct compact halls sized for a handful of megawatts, in the pattern described under edge data center, and we leave land and utility corridors in place so a second hall can be added without tearing up the first. A larger operator can use the same site logic at campus scale.

Interstate 35 through New Braunfels is a working construction zone. A community report lists the I-35 and FM 725 intersection project at $6 million, running from June 2022 to the fall of 2024 per TxDOT, and a $24.78 million Loop 337 improvement on Common Street between Loop 337 and Gruene Road funded by the May 2023 bond. Those are not data center projects, but they shape how oversize loads reach a site, which turn lanes a concrete truck can use and when a delivery window is realistic.

We schedule major deliveries around that traffic. Transformers, switchgear and generator sets arrive on heavy-haul trucks with escorts, and we pre-plan the route from the interstate to the gate, confirm the turning radius and the gate width, and stage laydown space so the equipment does not sit on a public road. A good delivery plan keeps long-lead gear on the critical path without letting it become the thing that stalls it, which is the central idea behind our long-lead equipment procurement service.

On a site between two large metros the budget usually moves on four things: rock, utility extension, large-load interconnection and the cost of keeping skilled trades on a remote job. Rock and utility extension are knowable once borings and a utility will-serve letter are in hand. Interconnection is the hardest line to pin down, because Texas Senate Bill 6 now sets standards for large loads of 75 megawatts and above, including site control, a study fee and financial commitments, and a transmission-voltage load coming online after the end of 2025 must be able to curtail during a firm load shed.

We put those requirements into the estimate on day one, not at the end. Our permitting and utility interconnection team writes the path from application to energization in the same schedule that holds the foundation, the steel and the commissioning, so the owner sees the real critical path. Local employers in the area, including a plastics plant announced with 149 jobs and a $968,500 state grant and an automotive plant of about 450 people, also draw from the same trade labor pool, so we plan crew sizes and subcontractor commitments early.

From New Braunfels we can reach Seguin to the east along Interstate 10 and the northern edge of the San Antonio metro to the southwest, and we can reach the Austin side of the corridor without a long mobilization. Operators comparing sites in the region usually look at the whole run from San Marcos through New Braunfels, so we offer one estimate that prices each parcel with the same assumptions about power, rock, water and trucking.

If your search started in the capital region, read our notes on San Marcos for a comparison. For a speculative owner assembling land before a tenant signs, real estate developers and site owners explains how we stage design, permitting and site work.

Tell us the address, the utility that will serve it and the load you need. We will respond with a site-readiness list covering geotechnical scope, interconnection steps and the first sequence of work.

Does the Balcones Fault make New Braunfels a poor choice for a data center?

Not by itself. Wikipedia places the city along the fault, which tells us to take borings seriously, but a fault line on a regional map is not the same as active movement under a particular parcel. We run a geotechnical program that characterizes rock depth, fractures and clay content, then design the foundation to fit what the borings show. The result is usually a combination of excavation, select fill and a structural slab, and the cost is known before construction begins.

How does the I-35 corridor affect delivery of generators and transformers?

Heavy equipment has to travel on interstate and local roads that are under repair, so the route matters. We map the haul from the nearest highway to the gate, check for turn radius and bridge limits, and schedule deliveries outside peak traffic. We also stage laydown space on the site so a late truck does not block the road. That planning is part of our fast-track scheduling approach.

What can a parcel of 100 acres or less support?

Acreage alone does not set the size of a campus, because the real limit is power. A parcel of that scale can host a small hyperscale phase, a colocation building or several enterprise halls if the utility can serve it. We test the layout against setbacks, stormwater detention, generator-yard noise and truck access, then show phasing so the next hall has a place to go.

Who handles the interconnection application?

The owner or utility partner is the applicant of record, and we prepare the construction-side documentation: site control evidence, one-line diagrams support, scheduling milestones and cost estimates. Senate Bill 6 adds study fees and financial commitments for large loads, so we help owners understand the sequence before they commit capital.

Can you work in phases so we are not paying for megawatts we cannot yet use?

Yes. We design the shell, the yards and the underground infrastructure for the final build, then complete halls in the order the load arrives. Phased work lets the owner turn on revenue early, and our phased expansion approach keeps new construction separated from live equipment.