Interwest Safety Supply, LLC

Colorado welcome sign

Colorado Road Signs

If you’re looking for road signs for the state of Colorado or you simply need signs shipped to Colorado, you’ve come to the right place. We offer high-quality MUTCD signs, accessories, and traffic control products.
Scroll to see all the sign options or use these quick links to jump to the signs you need:

  • Construction Signs
  • Regulatory Signs
  • Parking Signs
  • Warning Signs
  • Guide Signs
  • Work Zone Safety Signs
  • More Signs & Products

Interwest Safety Supply is an unchallenged leader of the traffic safety and sign industry. Since 1977, Interwest has been serving the Western United States with high-quality, engineer grade, MUTCD specified safety signs, accessories, and traffic control products.

Staffed with experienced professionals in both the public and private sectors, Interwest is fully capable of serving your government body, private enterprise, or highway construction company.

Construction Signs

Construction signs are vital for many different industries in Colorado and are amongst our most popular product categories.

Construction signs are built with solid aluminum, then laminated in high-quality reflective sheeting. Highway construction companies, as well as private enterprises like public contractors, are sure to appreciate the quality of these signs.

Regulatory Signs

Perfect for city or state governments, regulatory signs offer helpful solutions for new roads, traffic lights, or other changes in public transportation.

A wide selection of stop signs, yield signs, and street signs are all included under this category.

Warning Signs

Warning signs provide a necessary service to Colorado highway construction companies, state and local government offices, and other private enterprises in liability and safety issues related to their necessary activities.

All warning signs come with ⅜ inch mounting holes to help speed up the installation process.

Guide Signs

Guide signs are a particularly important part of the Colorado roadway construction process, as well as governmental signage for national parks, interstates, and exits.

The wide variety of guide signs from Interwest Safety Supply are available in Fluorescent Diamond Grade (DG) reflective sheeting and constructed using high-quality aluminum.

Work Zone Safety Signs

To comply with various local, state, and federal regulations in Colorado, construction sites must maintain appropriate work zone safety signs for any workers or visitors who enter the premises.

Work zone safety signs assist contractors or construction companies to secure their construction sites with caution notices, danger observances, and no trespassing signs.

Parking Signs

Parking signs are necessary components of virtually every industry, from hotels and places of worship to universities and sports arenas.

Interwest Safety Supply offers signs that help private enterprises throughout Colorado indicate parking locations, restricted areas, and handicap or carpool-only spaces.

Additional Signs

  • School Traffic Signs
  • Solar Powered Signs
  • Property Signs
  • Residential Signs
  • Construction Roll-Up Signs
  • Hotel and Valet Signs
  • Traffic Cone Signs
  • Oversize Load Signs

Additional Products

  • Traffic Delineators
  • Traffic Barriers
  • Smart Traffic Solutions
  • Object Markers
  • Line Markings
  • Safety Equipment
  • Traffic Control Products
  • Discount Safety Gear
  • Portable Sign Stands
  • Sign Mounting Hardware
  • Metal Sign Posts
  • Band-It Tools

Denver, Colorado Division

One of Interwest Safety Company’s five west coast regional warehouses is centrally located in Denver.

A convenient location in Denver, CO allows us to quickly and reliably deliver safety supplies within a timely period. Additionally, a staff of experienced professionals is always prepared to address any questions or concerns and create outstanding experiences for every one of our commercial and private clients.

Interwest Safety Supply

195 S Navajo St

Denver, Colorado 80223

Office: 303-733-8447 Internet Sales: 866-791-4144 Fax: 303-733-8664

Hours: Monday-Friday 7:30 a.m. – 4:30 p.m

A Few of the Cities We Serve in Colorado


Castle Rock






Fort Collins




Colorado Springs





Commerce Cit

Grand Junction







Wheat Ridge

We serve the entire state of Colorado. If you don’t see your city listed above, we can still ship to your location.

Why Professionals Choose Interwest Safety Supply LLC

Interwest Safety Supply has built a legacy of quality during our 40 years of industry experience. As the largest distributor of safety supplies in North America, Interwest is dedicated to providing our customers with valuable products, helpful customer service, and affordable safety solutions.

This is why we firmly believe that our customers, and the services they receive, truly speak for themselves.

“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.

Scroll to Top