Leadership Team
Why We're The Best

SEMA Construction, Inc.


SEMA Construction, Inc. is a full-service construction firm. And at SEMA, we believe a company isn’t defined as much by what they say about conducting their business as it is by what they do in conducting their business. And how do we conduct ours? We do it on time, we do it on budget, and we do it safely. That’s who we are – a general contractor that thrives on doing it right.

Highways. Earthwork. Bridges and Structures. Dams and Reservoirs. Utilities. Civil Infrastructure. These are our specialties. Since our inception in 1991, we have grown into one of the nation’s top heavy highway construction contractors with a superior reputation for completing large construction projects ahead of time and within budget parameters. And it’s due entirely to our employees who live for achieving quality workmanship within owner specifications. Because at SEMA, we love the details.

Approximately 80 to 90% of our construction services are for government entities, with the majority awarded to us on a competitive bid process. Click to learn more about our work and our offices in California, Colorado, Florida, and Texas.

Corporate Headquarters
7353 S. Eagle Street, Centennial, CO 80112
PH: 303.627.2600, FX: 303.627.2626


SEMA Precast, Inc.


You’ve seen our work. We make panels and wall systems throughout Colorado – whether you’ve been on I-25 in Colorado Springs, I-225 & Mississippi in Aurora, or on 29 Road & I-70B Interchange in Grand Junction, you’ve likely driven by our products. Our precast concrete manufacturing company produces architectural precast panels, precast retaining wall systems, industrial wall panels, and two-sided architectural precast sound walls. We’re also a licensee for J-J Hooks, the leading precast concrete barrier system in the world.

SEMA’s precast products are ideal for sound barriers, privacy/screen fences, office or warehouse buildings, and architectural or utility structures where aesthetics, function, and user-friendly construction offers multiple advantages to the owner. The two-sided proprietary manufacturing capability is unique to the industry and ideal for selective architectural requirements in sound walls and site development.

Our patented retaining wall systems offer enhanced economics, simplicity, and construction advantages compared to the conventional methodologies. These retaining wall systems provide for reduced excavation and backfill volumes, faster construction cycles, and the ability to utilize recycled construction products for wall fill. SEMA Precast also offers complete design, supply, and installation services for all of our precast concrete products.

SEMA Precast, Inc.
14585 Brighton Road, Brighton, CO 80601
PH: 303.654.1788, FX: 303.654.1947
Contact: Brian Carberry




Rocky Mountain District
7353 S. Eagle Street, Centennial, CO 80112

PH: 303.627.2600, FX: 303.627.2626

Started in 1991, SEMA’s Rocky Mountain District is one of the region’s largest heavy highway contractors. For the past several years, SEMA has been ranked as Colorado’s second-largest highway contractor according to Colorado Construction magazine (May 2010). The Rocky Mountain District shares its space with the Corporate Headquarters.

We have worked for numerous public and private owners in this region, including the Colorado Department of Transportation, the Kansas Department of Transportation, Union Pacific Railroad, Burlington Northern Santa Fe Railway, and Xcel Energy.

Notable Projects include:

  • Central Park Boulevard & I-70 in Denver
  • Riverside Parkway in Grand Junction
  • US 160 & US 550 Interchange in Durango
  • K-18 Riley County in Manhattan, Kansas





California District
320 Goddard Way, Suite 150, Irvine, CA 92618
PH: 949.470.0500, FX: 949.829.0100

SEMA’s California District is one of Southern California’s largest heavy highway contractors. The California District opened in 2002 to meet the highway construction demand in the Orange County area.

We have worked for numerous owners throughout southern California including Riverside County, Orange County, Metropolitan Transportation Authority, the City of Los Angeles, and the Metropolitan Water District of Southern California. Additionally, we have worked with private owners including Vestar/Kimco Tustin LP and Pulte Homes.

Notable projects include:

  • HWY 133 in Laguna Canyon
  • HWY 60 - Moreno Valley in Riverside County
  • Jeffrey Road Grade Separation in Irvine
  • I-10/Bob Hope Interchange in Rancho Mirage
  • Coldwater Canyon Water Reservoir Replacement in Beverly Hills
  • Whitegates Reservoirs in Riverside




Southeast District
6200 Hazeltine National Drive, Suite 100, Orlando, FL 32822
PH: 407.563.7900, FX: 407.563.7999


SEMA’s Southeast District is located in Orlando and is one of the region’s largest heavy highway contractors. The Florida District opened in 2008 after securing our first Florida Department of Transportation project on I-4 in Volusia County.

We have successfully bid on many projects for the Department of Transportation, Florida Turnpike Authority, Orange County, Polk County and the Orlando-Orange County Expressway Authority.

Notable projects include:

  • SR 528 Beachline Widening in Orlando
  • SR 686 & I-275 Interchange in Tampa
  • SR 429/CR 437A Interchange in Orlando
  • SR 429 Extension to US 441 in Apopka



Texas District
3000 S. I-35, Suite 400, Austin, TX 78704
PH: 512.669.5950, FX: 512.669.5951

SEMA’s newest district, the Texas office in Austin, opened its doors in 2009 and in just a short time has made its mark in the Texas transportation industry by working with owners such as the Texas Department of Transportation and the North Texas Tollway Authority. SEMA has also been selected by Burlington Northern Santa Fe to participate in procurement opportunities for projects in Texas.

Notable projects include:

  • NTTA SW Parkway Section 4 in Tarrant County
  • SH 114 & SH 170 Interchange in Denton County
  • US 290 Interchange in Travis County





Thomas G. Ames, President, CEO and Director

Tom Ames, along with his business partner Mel Browning, opened SEMA’s doors on February 20, 1991 in Denver. Currently, Tom oversees all of SEMA’s Corporate and District operations.


Brad Spies, Southeast and Texas District President and Director

Brad Spies joined SEMA’s ownership team in 1992. Currently, Brad oversees all of SEMA’s operations for our Southeast District and Texas District offices.


Mel Browning, Director

Mel Browning and Tom Ames opened SEMA’s doors on February 20, 1991 in Denver. Currently, Mel oversees all of SEMA’s field operations in our California District.


T. Brett Ames, California and Rocky Mountain District President

Brett Ames starting working at SEMA in 1996, and he became the Rocky Mountain District President and Corporate Vice President in 2004. Currently, Brett oversees all of SEMA’s Rocky Mountain District and California District operations.


Why We're The Best


We’re the best because…

…at SEMA, we like action.
We typically self-perform 70% of most major construction work scopes, giving us the unique ability to manage the primary dynamics of our construction projects.

…at SEMA, we’re not just about ideas.
We’re about substance – the dirt, the concrete, and the sweat we put into each project.

…at SEMA, safety comes first.
In fact, our safety officers don’t even have offices – they’re way too hands-on to be anywhere but in the field.

…at SEMA, we like big.
We are ranked in ENR’s Top 400 Contractors listing as the nation’s 187th largest contractor.

…at SEMA, we hire talent.
Our people don’t need a “how-to” book for us to make them successful because they require success for themselves.

…at SEMA, we know who we are.
We don’t want to be all things to all people. We’re a construction company. And our experience speaks for itself. We’ve completed over $2 billion in domestic and international projects since our inception in 1991.

We’re the best, because we’re SEMA.




Corporate Headquarters
SEMA Construction, Inc.
7353 S. Eagle Street
Centennial, CO 80112

PH 303.627.2600
FX 303.627.2626