Natural Gas Infrastructure
Natural Gas Infrastructure Services
Modern natural gas infrastructure—ranging from high-pressure transmission mains to neighborhood service lines, along with every regulator station in between—serves as the silent backbone that heats homes, powers industries, and balances the electric grid. It includes welded steel or polyethylene natural gas pipeline segments, pressure-reducing stations, valves, smart meters, and cathodic corrosion protection systems that preserve steel for decades. In 2023, The Pipeline and Hazardous Materials Safety Administration (PHMSA) logged 412,025 miles of transmission and 2.35 million miles of distribution pipe, making gas the nation’s most extensive underground utility system (PHMSA, 2025).
Natural Gas Pipeline Construction and Integrity Management
We deliver end-to-end solutions for natural gas pipeline systems, spanning transmission and distribution networks. From initial planning through long-term integrity maintenance, and with a strong emphasis on safety, compliance, and operational reliability, our team supports every phase of the project lifecycle. In construction, we perform civil works such as building access roads, mass excavation, joint trench, and horizontal directional drilling. We also install new steel and HDPE mains, regulators, and compressor stations. Beyond construction, we provide robust integrity management programs that emphasize safety and de-risk compliance. These include hydrostatic and pneumatic pressure testing, inspections, cathodic corrosion protection systems, and digital integrity monitoring.
Underground Drilling and HDD Capabilities
When right-of-way is constrained, or surface disruption must be minimal, our underground directional drilling specialists install steel pipes safely beneath rivers, highways, or rail corridors. Centuri has a national fleet of maxi‑rigs and service drills for underground directional drilling and horizontal directional drilling (HDD). While our equipment drills beneath rivers and through solid rock, we deploy reclaim systems that recycle drilling fluids, saving on costs. This trenchless expertise reduces restoration bills, speeds timelines, and preserves sensitive environments.
High-Quality Fabrication and High-Pressure Steel Services
Our in-house fabrication services enable you to build according to specifications while saving both time and costs. Centuri fabrication facilities handle carbon, stainless, and chrome steel up to 48 inches in diameter and utilize automated and manual welding systems that are compliant with ASME and API codes. Hydrostatic testing, X‑ray services, and NACE‑certified coatings ensure durability and integrity for your natural gas pipelines.
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Joint Trench and Duraline Electrical Integration
Where municipalities demand efficient corridor use, we excel at joint trench installations – nestling gas, duraline electrical, water, and fiber in a single excavated slot with coded separation and shared backfill. This coordinated approach cuts pavement restoration work and speeds up project schedules. Crews have expertise in deep/mass excavation, vault construction, and duraline electrical solutions that compartmentalize power conductors.
Regulator and Compressor Stations
Precise pressure control protects customers and reduces fugitive methane. Our regulator station installations reliably balance line pressure, while strategically located compressor units keep volumes moving over long distances. Centuri crews perform civil, mechanical, electrical, and commissioning scopes for new greenfield compressor sites and brownfield station upgrades, including installation of centrifugal or reciprocating packages, slug catchers, and high‑velocity flushing.
Future-Ready Innovation: Integration and Sustainability
With regulators targeting a reduction of 1.2 million metric tons of methane emissions by 2035 (EPA, 2024), Centuri is embracing sustainability. We deployed the GoVAC Pipeline Evacuation System, eliminating the venting or flaring of excess gas into the atmosphere. Our modular construction shortens field hours while fleet telematics lowers our carbon footprint. Additionally, we utilize SCADA to monitor gas networks, ensuring quick leak fixes, safety, and regulatory compliance. Lastly, we have partnered with customers on renewable natural gas projects – anaerobic digesters and injection sites, positioning networks for a lower-carbon future.
Ensuring Safety and Compliance in Gas Networks
Safety starts long before the first weld. Centuri engineers design to CFR 192 standards, conduct extensive hydrostatic pressure testing, and follow API RP1173 pipeline safety protocols. Construction is backed by a digitized quality assurance platform that captures every weld number, radiograph, and pressure test. In operation, SCADA telemetry streams flow, temperature and acoustic leak signatures to control centers, enabling continuous visibility and remote control. Our cathodic corrosion protection systems extend steel life by decades and fulfill compliance requirements (PHMSA, 2017) for your gas networks.
Why Choose Centuri?
- Experience: 115-year operating history with utility partnerships averaging 24 years.
- Safety: A Total Recordable Incident Rate (TRIR) of 1.05 and operator-qualified crews.
- Resources: In-house horizontal directional drilling rigs and pipeline fabrication services. Plus, 51 gas locations across 46 U.S. states and four Canadian provinces, slashing mobilization time.
- Quality: ISO 9001 workflows, API-certified welders, and cloud QA/QC documentation visible in real-time.
- Community Impact. Local hiring, reduced emissions, traffic-control coordination, spoil recycling, and habitat restoration on every project.
Start Your Natural Gas Infrastructure Project with Centuri
Whether you’re building a new distribution line, expanding takeaway capacity, or replacing aging cast-iron mains, Centuri is ready. Contact us for a no-obligation consultation, and let’s build natural gas infrastructure that’s safer, smarter, and prepared for a lower-carbon future.
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Featured Natural Gas Infrastructure Projects
Feeder Line Natural Gas Project
Ongoing in Utah
With over 1.3 million feet installed since 2006, the long-term partnership replaces aging high-pressure pipelines statewide while rigourously protecting Utah’s natural landscapes and wildfire.
Southwest Gas Replacement and Installation Work
2016 in Multiple States
From 2008 through 2012, the Centuri team was called to install and replace over 271 miles of high-density (HD) pipe in Southern Arizona for Southwest Gas, the largest natural gas distributor in the Southwest.
Kokomo Fusion Project
2023 in Indiana
Installation of an 18-mile natural gas pipeline powering a $2.5 billion EV-battery plant with scope including pipeline construction, geotechnical and directional drilling, hydrostatic pressure testing, ecological controls, and site remediation.
Citations
Pipeline and Hazardous Materials Safety Administration (PHMSA) (2025, April 7). Annual Report Mileage for Gas Distribution Systems. https://www.phmsa.dot.gov/data-and-statistics/pipeline/annual-report-mileage-gas-distribution-systems
Pipeline and Hazardous Materials Safety Administration (PHMSA) (2017, October 24). Fact Sheet: Cathodic Protection. https://primis.phmsa.dot.gov/comm/FactSheets/FSCathodicProtection.htm
U.S. Environmental Protection Agency (EPA) (2024, November 12). Finalizes Rule to Reduce Wasteful Methane Emissions and Drive Innovation in the Oil and Gas Sector. https://www.epa.gov/newsreleases/epa-finalizes-rule-reduce-wasteful-methane-emissions-and-drive-innovation-oil-and-gas