# Hydrovac Excavation & Potholing in St. Louis City

> Hydrovac potholing and daylighting in St. Louis City for contractors and utilities working around old gas, water and fiber lines. Call 636-978-3478.

Canonical: https://stldrain.com/blog/st-louis-hydrovac-excavation
Last updated: 2026-10-26

St. Louis City, MO

Few places in the region have as many layers underground as the city. Streets downtown and in the older neighborhoods carry gas, water, steam, electric, phone and fiber lines installed across more than a century, often stacked close together. Hydrovac lets contractors dig to those lines with water and vacuum, see them, and work around them without a strike. Our city work is commercial and utility focused: potholing for contractors, daylighting for utility crews, and support for public right-of-way projects where a damaged line can shut down a block.

## Local conditions in St. Louis

Records for old city utilities are often incomplete. Abandoned mains, rerouted services and unrecorded fiber show up regularly in the Central West End, Midtown, Downtown and along Grand. Potholing at each planned crossing — after Missouri 811 has marked the area — tells a crew what is really in the ground before boring, trenching or setting foundations.

City soils are often dense loess and clay over shallow limestone, and many blocks have old fill full of brick and rubble. Hydrovac breaks that material up and lifts it out cleanly, which suits tight sidewalks, alleys and right-of-way work where there's no room to stage a big excavator. Shallow rock can stop a hole short of the needed depth, and when it does we tell you right away so the plan can change before time is lost.

We also slot trench to find lines crossing a route, daylight utilities along MSD and street projects, and dig small holes for signs, poles and bollards near live services. Our trucks run from O'Fallon, so city work is a straight shot down I-70 or Highway 40. Excavated material goes into the truck's debris tank, so streets and sidewalks stay clear for traffic and pedestrians while the work goes on.

## Areas we serve nearby

- Downtown
- Central West End
- Midtown / Grand Center
- Soulard
- The Hill
- South City

## Diagnose first

You see camera video of the problem, we locate and map the problem spots, and you get a written quote before any work.

## Frequently asked questions

### Is Missouri 811 required for city projects?

Yes. Get a Missouri 811 ticket before digging in St. Louis. Potholing then confirms the marked lines and their depth.

### Can you work in tight alleys and sidewalks?

Yes. Hydrovac keeps holes small and clean, and the hose can reach from the truck to spots a machine can't get to.

### What about rubble and old fill?

Hydrovac handles most fill. Large rock or concrete can slow work, which we account for in the quote.

### How do I schedule hydrovac in St. Louis City?

Call 636-978-3478 with the address and scope, or try our hydrovac estimator first for a range. The written quote is free.

## Contact

|  |  |
| --- | --- |
| Phone | [636-978-3478](tel:6369783478) |
| Hours | Monday–Friday 7:00am–4:30pm |
| Address | 854 Lone Star Drive, O'Fallon, MO 63366 |
| Pricing | No posted prices — call for a free quote |

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