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About Us

Founded in 1977, Interwest manufactures highway construction and roadway signs and distributes a wide variety of traffic safety supplies and equipment used to signal, protect, delineate, notify, and guide pedestrians and vehicles safely through roadways and work zones.

Headquartered in Provo, Utah, Interwest Safety Supply is the largest distributor of traffic safety supplies, as well as the largest manufacturer of roadway signage in the Rocky Mountain region. The company operates from five distribution facilities and two manufacturing facilities located in Utah, Colorado, New Mexico, Arizona, and Nevada.

These safety products are used in a multitude of construction and maintenance projects involving highways and streets, infrastructure, utilities, landscaping, development, general construction, events, crowd control, accidents, natural disasters, law enforcement, and land development, to name a few.

Who Do We Serve

For a number of years, Interwest Safety Supply has proudly served a variety of customers including the Department of Transportation (state and federal), road contractors, general contractors, small sign manufacturers, municipalities, airports, schools, universities, law enforcement, rental companies, and the private industry.

Interested in learning more about the different types of customers we work with? Here's a list of the industries we serve.

Customer Testimonials

“I would highly recommend them to everyone. The staff is wonderful. Always so helpful. Their products are top of the line. I have been doing business with them for over 20 years. I go to them for all of our traffic control devices.”

★★★★★ - Ava B

“We have been working with Interwest for years and they are the best at their line of work! We have had custom signs, safety equipment, Ada items, paint, and much more supplied by them and have been very pleased with each experience from start to finish! Customer service and quality are five stars all the way! Would highly recommend them to anyone!”

★★★★★ - Jake M.

Learn More About Interwest Safety Supply

Get In touch

If you need assistance, a member of our friendly staff will be always happy to help you.

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Regional Warehouse

We operate in 5 regional warehouses to provide you a fast and reliable delivery service

Delivery Truck

Fast Shipping

From highway signing and safety products to crash cushions and traffic monitoring equipment.

Experienced Staff

Experienced Staff

If you need assistance, a member of our friendly staff will be always happy to help you.