Granite Construction Logo

Granite Construction Company is a full-service general contractor, construction management firm and construction materials producer. Recognized as one of the top 25 largest construction companies in the U.S., Granite specializes in complex infrastructure projects, including transportation, industrial and federal contracting.


AASHTO and CCRL accredited, Garco Testing Laboratories provides accurate and reliable materials testing, mix design, inspection and engineering services to the construction industry.


In addition to distributing a wide variety of supplies and rental equipment related to the construction industry, Granite Construction Supply & Sign Shop also fabricates construction, regulatory and warning signs as well as banners, decals and fleet vehicle graphics. We deliver most supplies to property and job sites. GCS also maintains safety, construction, towing and environmental tools and supplies.

Granite Industrial

Granite Industrial, Inc. (GI) has been a trusted partner serving the needs of utility-scale solar projects since 2015. Services include site civil work, post-driving, and mechanical solar installation. Together with Granite, the GI team offers the financial strength, skilled resources and specialty fleet of installation equipment to meet the demanding, remote, and complex project solutions. 

Granite Inliner

Granite Inliner is one of the nation’s largest cured-in-place pipe (CIPP) and trenchless pipe provider, and offers sustainable pipeline rehabilitation services to both public and private sectors. Granite Inliner installs safe, cost-effective, and long-term solutions for aging water, wastewater and sewer infrastructure needs. In June 2018, they became a wholly-owned subsidiary of Granite Construction, Inc.

Granite Power

Granite Power, Inc. is a full-service specialty contractor serving the energy sector with self-perform construction services and consulting expertise. Our mobile workforce is proud to offer turnkey substation construction, utility civil services and renewables installation for Granite Power customers nationwide.


International Directional Services (IDS) brings more than 50 years of industry experience for global exploration and directional drilling programs. IDS offers in-house technical staff and a fleet of surveying and directional drilling equipment necessary to meet nearly any drilling design challenge imaginable. In June 2018, IDS became a wholly-owned subsidiary of Granite Construction, Inc. 

Intermountain Slurry Seal Logo

Intermountain Slurry Seal has been serving the needs of the pavement preservation industry since 1978. The brand provides a wide array of services and solutions that meet all residential street, highway and commercial customer pavement preservation needs across the U.S.


Layne, A Granite Company (Layne) is a global water management, mineral exploration and drilling company. They provide responsible infrastructure solutions for natural resources in water, minerals and energy, while offering innovative, sustainable products and services with an enduring commitment to safety, operational excellence, and client satisfaction. In June 2018, Layne became a wholly-owned subsidiary of Granite Construction, Inc.

Liner Products

Supplying more than 40 million feet of cured-in-place pipe (CIPP) liner since 1999, Liner Products has a strong legacy of being a trusted source and top supplier of high performance pipe lining tubes and material throughout North America. In June 2018, Liner Products became a wholly-owned subsidiary of Granite Construction, Inc.


LiquiForce, a Granite Company (LiquiForce) is a leader in no-dig trenchless pipeline rehabilitation services for water and wastewater pipeline systems, and have offices in both Canada and the United States. Services include complete pipeline system inspection, assessment, rehabilitation and maintenance.  In June 2018, LiquiForce became a wholly-owned subsidiary of Granite Construction, Inc.