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TLT Construction Co. Inc. logo, utility infrastructure contractor since 1979
TLT Construction crew member and mini excavator trenching for underground utility conduit in Texas.

TLT Construction Company, Inc. · Utility infrastructure construction since 1979

Built to self-perform difficult utility construction.

  • Underground Electric
  • Rock Trenching
  • Directional Drilling
  • Underground & Overhead Fiber
  • Fiber Splicing
  • Civil & Restoration
Request a BidView our capabilities

Call 830-420-3600Upload plans

Who we build for

  • Utility
  • Cooperative
  • Municipal
  • Commercial
  • Contractor

What TLT self-performs

Our own crews and equipment cover underground electric, hard-ground trenching, drilling, fiber and the civil work around them. From planning and construction to installation, no project is too big or too small.

Electric and utility

Underground electric, plus moving and repairing existing lines.

Underground Electric Distribution

Underground cable, conduit and terminations for utilities and co-ops.

See Underground Electric Distribution

Utility Relocations & Repairs

Move or repair existing underground and overhead utilities.

See Utility Relocations & Repairs

Emergency & Storm Restoration

Get damaged underground and overhead lines back in service.

See Emergency & Storm Restoration

Excavation, drilling and civil

Hard-ground trenching, drilling, exposing buried lines and putting the site back.

Rock Trenching & Excavation

Trenching through rock and hard ground for cable and conduit.

See Rock Trenching & Excavation

Directional Drilling & HDD

Steerable bores for conduit and cable, plus cased crossings.

See Directional Drilling & HDD

Vacuum Excavation & Potholing

Expose buried utilities safely before drilling or trenching.

See Vacuum Excavation & Potholing

Civil Construction & Restoration

Excavation, backfill, site work and restoration around the utility install.

See Civil Construction & Restoration

Fiber

Construction through final splice & test: underground fiber, overhead fiber, and splicing and testing.

Underground Fiber Construction

Conduit and HDPE, handholes, vaults, cable placement, risers and repairs.

See Underground Fiber Construction

Overhead Fiber & Strand

Strand, lashing, placement, pole transfers, NAPs, closures, risers and service drops.

See Overhead Fiber & Strand

Fiber Splicing & Testing

Fusion and PON splicing, OTDR, troubleshooting, acceptance testing and emergency repair.

See Fiber Splicing & Testing

Equipment TLT operates

Our own machines and operators, so rock, excavation, utility support and fiber work stay in-house. If your spec calls for a specific machine or capacity, ask an estimator before you bid.

View the equipment fleet
  • Yellow Vermeer wheel-style rock trencher with its large carbide-tooth cutting wheel parked on white gravel

    Rock construction

    Hard-ground and rock trenching run by our own operators.

    • Vermeer T555 heavy crawler rock trencher
    • Vermeer 8550 rock trencher
    • Rock saws (in stock)
    • Hydraulic hammer capability
    See the service: Rock construction
  • Tracked excavator with its bucket in an open utility trench on a Texas jobsite, operator in the cab under a blue sky

    Excavation

    Machines for open-cut work, site prep and restoration.

    • Full-size excavators
    • Backhoes
    • Mini excavators
    • Skid steer
    • Specialty attachments
    See the service: Excavation
  • White TLT Construction Company flatbed truck carrying a large wooden cable reel at a utility jobsite

    Utility support

    Locating, pulling and handling equipment that keeps electric crews moving.

    • Vacuum excavation
    • Reel trailers
    • Motorized reel handling
    • Bully Dog wire-pulling equipment
    • Flatbed support
    See the service: Utility support
  • White TLT Construction Company Fiber Splicing Division trailer lettered for fiber optic installation and splicing

    Fiber

    Placing, handling and splicing gear to take fiber from reel to working route.

    • Fiber placer truck
    • Splicing trailer
    • Reel handling
    • Splicing and testing equipment
    See the service: Fiber

Kinds of projects we build

The scope we build for each type of customer. Ask an estimator for references on work similar to yours.

View projects by customer type

Where we work

TLT is based in Marion, Texas. Include your project location in your bid request so an estimator can confirm crews and schedule for your area. For hard-ground routes, see our Hill Country rock trenching page.

Service areas

Underground electric, fiber and rock trenching in Boerne, Bandera, San Antonio, New Braunfels and Medina County.

Browse service areas

For electrical contractors

Send the underground scope of an electrical job: rock trenching, conduit, vaults, boring and restoration.

Send plans for the underground

Marion office

205 Sage Pkwy
Marion, TX 78124
  • Monday - Saturday: 7am - 5pm
  • Sunday: Closed
View on Google Maps

How to request a bid

  1. Step 1

    Send the project

    Fill out the Request a Bid form with your project details and plans.

  2. Step 2

    Estimating reviews it

    Your request goes to TLT estimating, who review the scope and your bid date.

  3. Step 3

    We follow up

    An estimator contacts you using the email and phone you gave.

Request a Bid

Family-built since 1979

Read how TLT started, and remember co-founder Gene Thornhill (1929 – 2018), an innovative leader who loved God, his family, his country and his work.

About TLTRead our history

Questions from bid buyers

Read the bid request FAQ

Have plans? Get a bid.

Send your project details and plans through our Request a Bid form, or call the office if your bid date is close.

Request a Bid830-420-3600