Overview

The Premier Contractor of Choice

Vadnais Trenchless Services, Inc. specializes in microtunneling, shoring, and deep concrete caissons and also performs other trenchless services such as earth pressure balance (EPB) tunneling, pilot tube microtunneling and auger boring. We pride ourselves in being able to provide the required expertise, equipment and commitment to meet our client’s needs.

Vadnais Trenchless Services

About Us

Vadnais Trenchless Services, Inc. delivers trenchless construction with projects ranging in size from 12 to 126-inches in diameter and in drive lengths in excess of 3,000 feet.

We have successfully installed all available products of jacking pipe including steel casing, fiberglass, concrete, clay, and polymer concrete pipe. 

With an extensive company-owned equipment fleet and in-house fabrication facilities, we are a microtunneling leader in the United States, having installed over 400,000 feet of pipe beneath environmentally sensitive areas, dense urban areas, water bodies, canals, streets, railroads and major highways.

The safety of our people and the public is a top priority; we maintain  industry leading safety metrics but always work on ways to improve what we do in regard to safety.

Projects

Anderson Dam Tunnel Project
This project involves a complicated, single microtunnel...
Morgan Hill, CA

Anderson Dam Tunnel Project

This project involves a complicated, single microtunnel drive with the installation of 372 feet of 96-inch diameter steel casing pipe launched from a chamber tunneled under the Anderson Dam and recovered in the Anderson Reservoir. The microtunnel boring machine (MTBM) lake tap is launched from inside of a 24-foot Horseshoe tunnel mined chamber under the Anderson Dam, this 1,600-foot conventional tunnel will incorporate steel horseshoes and a reinforced concrete lining. A reaction frame and portal launch seal are used to tunnel from the chamber to a lake tap Landing pad deep below the surface of the Anderson Reservoir where the MTBM is recovered using specialty divers, barges, and cranes.

This project involves a complicated, single microtunnel drive with the installation of 372 feet of 96-inch diameter steel casing pipe launched from a chamber tunneled under the Anderson Dam and recovered in the Anderson Reservoir. The microtunnel boring machine (MTBM) lake tap is launched from inside of a 24-foot Horseshoe tunnel mined chamber under the Anderson Dam, this 1,600-foot conventional tunnel will incorporate steel horseshoes and a reinforced concrete lining. A reaction frame and portal launch seal are used to tunnel from the chamber to a lake tap Landing pad deep below the surface of the Anderson Reservoir where the MTBM is recovered using specialty divers, barges, and cranes.
This project involves a complicated, single microtunnel drive with the installation of 372 feet of 96-inch diameter steel casing pipe launched from a chamber tunneled under the Anderson Dam and recovered in the Anderson Reservoir. The microtunnel boring machine (MTBM) lake tap is launched from inside of a 24-foot Horseshoe tunnel mined chamber under the Anderson Dam, this 1,600-foot conventional tunnel will incorporate steel horseshoes and a reinforced concrete lining. A reaction frame and portal launch seal are used to tunnel from the chamber to a lake tap Landing pad deep below the surface of the Anderson Reservoir where the MTBM is recovered using specialty divers, barges, and cranes.
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Davis Lane Lift Station Microtunnel
This project consisted of a single microtunnel drive of 696...
Bozeman, MT

Davis Lane Lift Station Microtunnel

This project consisted of a single microtunnel drive of 696 feet of 64-inch diameter x 0.75-inch wall Trinity Products Tri-Loc Weldless Steel Casing. The microtunnel was installed under two frontage roads, an active railroad, and four lanes of Interstate 90 progressing through silts, sands, gravels, cobbles, and boulders beneath the groundwater table.

This project consisted of a single microtunnel drive of 696 feet of 64-inch diameter x 0.75-inch wall Trinity Products Tri-Loc Weldless Steel Casing. The microtunnel was installed under two frontage roads, an active railroad, and four lanes of Interstate 90 progressing through silts, sands, gravels, cobbles, and boulders beneath the groundwater table.
This project consisted of a single microtunnel drive of 696 feet of 64-inch diameter x 0.75-inch wall Trinity Products Tri-Loc Weldless Steel Casing. The microtunnel was installed under two frontage roads, an active railroad, and four lanes of Interstate 90 progressing through silts, sands, gravels, cobbles, and boulders beneath the groundwater table.
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Holmes Road Project
This project consists of installing fiberglass reinforced...
Houston, TX

Holmes Road Project

This project consists of installing fiberglass reinforced pipe (FRP) sanitary sewer totaling approximately 3,600 feet of 42-inch diameter and 990 feet of 48-inch diameter. The pipe installation is completed in five separate tunnel drives all at approximately 30 to 35 feet in depth with the tunnel reaches varying from approximately 700 feet to 1,000 feet. The entirety of the project is below the natural groundwater table through soils that are saturated with contaminated water requiring extensive coordination with the City of Houston to provide water-tight shafts and mitigate all potential environmental impacts.

This project consists of installing fiberglass reinforced pipe (FRP) sanitary sewer totaling approximately 3,600 feet of 42-inch diameter and 990 feet of 48-inch diameter. The pipe installation is completed in five separate tunnel drives all at approximately 30 to 35 feet in depth with the tunnel reaches varying from approximately 700 feet to 1,000 feet. The entirety of the project is below the natural groundwater table through soils that are saturated with contaminated water requiring extensive coordination with the City of Houston to provide water-tight shafts and mitigate all potential environmental impacts.
This project consists of installing fiberglass reinforced pipe (FRP) sanitary sewer totaling approximately 3,600 feet of 42-inch diameter and 990 feet of 48-inch diameter. The pipe installation is completed in five separate tunnel drives all at approximately 30 to 35 feet in depth with the tunnel reaches varying from approximately 700 feet to 1,000 feet. The entirety of the project is below the natural groundwater table through soils that are saturated with contaminated water requiring extensive coordination with the City of Houston to provide water-tight shafts and mitigate all potential environmental impacts.
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PG&E R-985 Project
This project consists of installing 140 feet of 24-inch...
Millbrae, CA

PG&E R-985 Project

This project consists of installing 140 feet of 24-inch diameter sacrificial steel casing using microtunnel beneath an existing concrete-lined channel and storm drain/sanitary sewer while providing a minimum depth of cover of 18 feet below the channel bottom and 10 feet of vertical separation from an existing 33-inch storm drain. Shafts for microtunnel work were approximately 35 feet deep and the microtunnel progressed through primarily sandy soils approximately 30 feet below the groundwater table utilizing the sacrificial case-and-displace method with steel casing pipe to install the steel gas pipe.

This project consists of installing 140 feet of 24-inch diameter sacrificial steel casing using microtunnel beneath an existing concrete-lined channel and storm drain/sanitary sewer while providing a minimum depth of cover of 18 feet below the channel bottom and 10 feet of vertical separation from an existing 33-inch storm drain. Shafts for microtunnel work were approximately 35 feet deep and the microtunnel progressed through primarily sandy soils approximately 30 feet below the groundwater table utilizing the sacrificial case-and-displace method with steel casing pipe to install the steel gas pipe.
This project consists of installing 140 feet of 24-inch diameter sacrificial steel casing using microtunnel beneath an existing concrete-lined channel and storm drain/sanitary sewer while providing a minimum depth of cover of 18 feet below the channel bottom and 10 feet of vertical separation from an existing 33-inch storm drain. Shafts for microtunnel work were approximately 35 feet deep and the microtunnel progressed through primarily sandy soils approximately 30 feet below the groundwater table utilizing the sacrificial case-and-displace method with steel casing pipe to install the steel gas pipe.
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Venice Dual Force Main
This project consisted of a new 54-inch diameter force main...
Marina Del Rey, CA

Venice Dual Force Main

This project consisted of a new 54-inch diameter force main sewer extending 10,392 feet in length, originating from a newly constructed manifold. From the manifold the alignment made its way beneath the Marina Del Rey Harbor inlet and Ballona Creek channel, continuing south under Pacific Avenue and Vista Del Mar to its terminus. The majority of the new 54-inch diameter line was constructed via microtunneling, predominately direct-jacked reinforced concrete cylinder pipe (RCCP) but also included 2,800 feet of 80-inch diameter Permalok Steel Casing with RCCP carrier and 1,800 feet of 88-inch diameter reinforced concrete pipe (RCP) with a 54-inch diameter fiberglass reinforced pipe (FRP) carrier. One of the tunnel drives included two horizontal curves and one vertical curve climbing 50 feet. The project also consisted of the demolition of existing equipment, procurement, and installation of three new generators along with ancillary controllers, transfer switches, and exhaust and cooling systems at a pumping plant. The generators that were furnished and installed included two 750 kilowatts (kW) and one new 1,500 kW complete with emissions control systems and fluid storage.

This project consisted of a new 54-inch diameter force main sewer extending 10,392 feet in length, originating from a newly constructed manifold. From the manifold the alignment made its way beneath the Marina Del Rey Harbor inlet and Ballona Creek channel, continuing south under Pacific Avenue and Vista Del Mar to its terminus. The majority of the new 54-inch diameter line was constructed via microtunneling, predominately direct-jacked reinforced concrete cylinder pipe (RCCP) but also included 2,800 feet of 80-inch diameter Permalok Steel Casing with RCCP carrier and 1,800 feet of 88-inch diameter reinforced concrete pipe (RCP) with a 54-inch diameter fiberglass reinforced pipe (FRP) carrier. One of the tunnel drives included two horizontal curves and one vertical curve climbing 50 feet. The project also consisted of the demolition of existing equipment, procurement, and installation of three new generators along with ancillary controllers, transfer switches, and exhaust and cooling systems at a pumping plant. The generators that were furnished and installed included two 750 kilowatts (kW) and one new 1,500 kW complete with emissions control systems and fluid storage.
This project consisted of a new 54-inch diameter force main sewer extending 10,392 feet in length, originating from a newly constructed manifold. From the manifold the alignment made its way beneath the Marina Del Rey Harbor inlet and Ballona Creek channel, continuing south under Pacific Avenue and Vista Del Mar to its terminus. The majority of the new 54-inch diameter line was constructed via microtunneling, predominately direct-jacked reinforced concrete cylinder pipe (RCCP) but also included 2,800 feet of 80-inch diameter Permalok Steel Casing with RCCP carrier and 1,800 feet of 88-inch diameter reinforced concrete pipe (RCP) with a 54-inch diameter fiberglass reinforced pipe (FRP) carrier. One of the tunnel drives included two horizontal curves and one vertical curve climbing 50 feet. The project also consisted of the demolition of existing equipment, procurement, and installation of three new generators along with ancillary controllers, transfer switches, and exhaust and cooling systems at a pumping plant. The generators that were furnished and installed included two 750 kilowatts (kW) and one new 1,500 kW complete with emissions control systems and fluid storage.
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WRF Lift Station
This project consisted of a single microtunnel drive of...
Morro Bay, CA

WRF Lift Station

This project consisted of a single microtunnel drive of 310-feet 60-inch diameter x 0.75-inch wall thickness Trinity Press Fit Steel Casing through a composition of poorly graded clean sand, clayey sand, and lean clay, including non-cohesive flowing sands. The microtunnel was installed under a roundabout intersection of Morro Bay Blvd and Quintana Rd. with shafts approximately 20 feet deep, at 12 feet below the groundwater table, and with numerous overlying critical utilities, critical surface improvements, and heavy traffic through the roundabout.

This project consisted of a single microtunnel drive of 310-feet 60-inch diameter x 0.75-inch wall thickness Trinity Press Fit Steel Casing through a composition of poorly graded clean sand, clayey sand, and lean clay, including non-cohesive flowing sands. The microtunnel was installed under a roundabout intersection of Morro Bay Blvd and Quintana Rd. with shafts approximately 20 feet deep, at 12 feet below the groundwater table, and with numerous overlying critical utilities, critical surface improvements, and heavy traffic through the roundabout.
This project consisted of a single microtunnel drive of 310-feet 60-inch diameter x 0.75-inch wall thickness Trinity Press Fit Steel Casing through a composition of poorly graded clean sand, clayey sand, and lean clay, including non-cohesive flowing sands. The microtunnel was installed under a roundabout intersection of Morro Bay Blvd and Quintana Rd. with shafts approximately 20 feet deep, at 12 feet below the groundwater table, and with numerous overlying critical utilities, critical surface improvements, and heavy traffic through the roundabout.
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HEADQUARTERS

11858 Bernardo Plaza Court
Suite 100
San Diego, CA 92128
Phone: 858.550.1460
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Northern California
 300 Harding Blvd., Suite 111
Roseville, CA 95678
Phone: 916.363.9924

Houston, Texas
14455 Primoris Way
Houston, TX 77048
Phone: 972.410.0268