FOUR
GENERATIONS OF UNDERGROUND EXPERIENCE

OUR SERVICES

Safety, Honesty & Quality

SHAFT EXCAVATION

Soldier Pile & Lagging

Liner Plates

Rock Excavation

Secant Piles

Slurry Walls

We take digging holes to another level. MSI has excavated many shafts as deep as 200+ feet deep in a wide range of ground conditions, managing significant ground water as needed all the way down. We will happily hand mine inceptor tunnels at various points in the excavation. 

HAND MINED TUNNELS

Pipe Jacking

Hand Mining

Pipe Grouting

MSI has hand mined thousands of feet of tunnels ranging 36” diameter and up in various ground conditions. We use customized pipe jacking stations to advance the specified tunnel pipe as we mine. When we reach the desired tunnel length and slope, the pipe is grouted in place. Pipe materials includes steel, reinforced concrete, or fiberglass pipe and more.

MANHOLE REHAB

Casting Replacements

Spot Repairs

CIP & Precast Replacment

Certified Mr Manhole Installer

Certified Lining System Installer (multiple materials)

Specialized Hatches

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TRENCHLESS TUNNEL/SEWER REHAB

Slip Lining

Spot Repairs 

Spray on Lining

Trenchless Repairs

MSI specializes in repairing damaged or failing tunnel systems from the inside including old brick sewers, concrete tunnels, box culverts, fiberglass pipe, corrugated pipe and more. We have your trenchless solution from spot repairs, spray on lining systems, to slip lining the damaged host pipe with a brand new pipe system. Our experienced crews are ready to get your tunnel back to full structural and hydraulic capacity. 

FLOW CONTROL & BYPASS PUMPING

Bypass pumping 

In-line Flumes Systems

Coffer Dams

Temporary Diversions

Floating work platforms

MSI has designed and installed 100’s of flow control systems during sewer repair projects, dam repairs, as well as canal and waterway projects. This includes in-line flume systems, river diversions, bypass pumping, floating work platforms and more. MSI is dedicated to keeping your system flowing during the project with zero down time. Whatever the required flow, we are up for the challenge.