Industries We Serve

Utilities and Infrastructure

Water management is crucial for commercial, municipal, and private development alike. Kolb Grading delivers the civil construction that utility and infrastructure projects depend on, from water pipelines and pump stations to bridges, tunnels, and HDPE systems, backed by rigorous safety standards and disciplined schedules across the country.

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Overview

Deep experience building for utilities and infrastructure

Kolb Grading brings deep civil construction expertise to water, wastewater, and infrastructure projects: installing water pipelines, cast-in-place structures, pump stations, and HDPE systems for utility companies, municipalities, and private owners. We build and maintain the reliable infrastructure that communities and industries depend on, safely and on schedule.

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Proven at scale

Infrastructure by the numbers

32,000+ ft

Large-diameter HDPE water main installed at the Iowa Fertilizer Plant

100,000 ft

Storm, sanitary, and water main installed across Lakeside 370

28,000 lf

Storm sewers, 15" to 84" RCP, delivered at Lambert International Airport

Water, Wastewater & Stormwater
Kolb Grading has a significant portfolio of water management projects, working with recognized utility companies and private owners to install solutions for every type of water management.
- Water pipeline
- Cast-in-place structures
- Security grating
- Low-span bridges and tunnels
- Storm and sanitary pump stations
Sanitary & Storm Pump Stations
Installation of pump station facilities is a core Kolb service. These facilities design and build water and wastewater solutions and are frequently used in tandem with reservoirs, rivers, and wells.
- Storm and sanitary pump stations
- Reservoir, river, and well integration
- Site excavation & grading
Bridges, Tunnels & Cast-in-Place Structures
Many of our projects involve bridges or tunnels serving transportation and water purposes, plus on-site cast-in-place structures produced for their size or shape.
- Pre-cast concrete structures and box culverts
- Design-build bridges and tunnels
- Cast-in-place construction (incl. Lambert International Airport)
HDPE Pipeline Installation
Our welding crews are trained and qualified across all areas of field-joining HDPE pipe and fittings, with concentrated field-based heat fusion capabilities.
- Socket fusion
- Butt fusion
- Saddle fusion
- Large-diameter utility & energy pipe (Vermeer T1255)

Self-performed scopes

What Kolb brings to utilities and infrastructure

Underground Utilities

Water pipeline, storm and sanitary systems, and HDPE installation for utility networks.

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Earthwork

Mass grading, excavation, and trench work for pump stations, reservoirs, and pipeline corridors.

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Site Development

Complete sitework and project management for water, wastewater, and public infrastructure, from bid to final grade.

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Stabilization

Ground improvement and stabilization for pump stations, structures, and demanding subgrades.

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How we work

From first survey to a system in service.

One team handles the work from first survey to a tested system ready for service.

01

Assessment & Survey: we evaluate site conditions, existing utilities, and specs to plan the work and manage risk before excavation begins.

02

Excavation & Shoring: crews open and shore deep, often wet trenches, dewatering and protecting existing utilities as they go.

03

Installation & Fusion: pipelines, structures, and pump stations go in, with HDPE joints fused and pressure-tested to spec.

04

Backfill & Restoration: trenches are backfilled and compacted, the system is tested, and the site is restored to final grade.

Problems we solve

Where utility and infrastructure work gets hard

Deep, wet excavation

Pump stations and pipelines often mean deep, saturated trenches. We plan dewatering, shoring, and safe access so crews stay productive and on schedule.

Existing utility conflicts

Live water, power, and gas lines cross most corridors. We locate, protect, and coordinate around them to avoid strikes and costly delays.

Permitting & compliance

Public infrastructure carries strict environmental and regulatory demands. We manage permits, inspections, and documentation so the work stays compliant.

Coordination across trades

Utility builds pull together many trades and owners. Kolb self-performs the core scope and coordinates the rest to keep the schedule intact.

Safety

Safety is a culture, not a number.

For us, safety is more than an EMR figure. It’s how every crew shows up, every day. From daily planning and hazard analysis to ongoing crew training, we build safety into the work so our people go home safe and your project stays on track.

Daily hazard analysis

Every crew plans the work and the risks before it starts.

Ongoing safety training

Continuous training keeps our people sharp and certified.

Documented compliance

Full reporting and inspection coordination on every job.

Selected work