Colorado’s 10 Most Congested Roads


If you feel like your commute is taking longer, it is.

Newly released census data show that Colorado was the sixth fastest-growing state over the last 10 years. Colorado’s population grew at nearly twice the rate of the rest of the nation between 2010 and 2020, the U.S. Census Bureau reported earlier this month. The Denver metro area and northern Colorado counties saw some of the strongest growth. While the rapid growth over the last decade has done wonders for the Centennial state’s economy, it has also created significant challenges around traffic congestion.

According to the Colorado Sun, Colorado’s highways were designed for a population of 3.5 million people. The state now has 5.8 million residents and approximately 4.2 million licensed drivers in 2019. Not surprisingly, the increase in population means more vehicles on the road. Unfortunately, Colorado’s transportation investments haven’t kept pace with population gains. The result: increased gridlock.

Traffic in Denver CO

Traffic Congestion in Colorado – And what it’s costing us

A recent economic report released by TRIP, a national transportation research non-profit, confirms what Colorado drivers have speculated for some time — that vehicle travel in Colorado has increased substantially in recent years. From 2000 to 2019, vehicle travel in Colorado increased by 31 percent, the ninth highest rate in the nation.

The report, “Keeping Colorado Mobile,” states congested roads and highways cost Colorado drivers $3.5 billion per year in lost time and wasted fuel. Annually, traffic delays cost the average Denver driver $1,242 per year or 26 gallons of wasted fuel, and 62 hours lost to congestion. In Colorado Springs, congestion costs drivers $838 per year and 44 hours lost, while northern Colorado drivers lose about $460 per year and 22 hours annually. Consequently, the increase in traffic not only impacts motorists’ bottom line but is also directly tied to the quality of life for the state’s residents.

Colorado’s 10 most congested highway segments

Here is TRIP’s list of Colorado’s ten most congested roads and highway segments. The results are based on the measured volume of traffic carried by a roadway compared to its capacity.

1SH 470Littleton, Lone TreeSanta Fe Dr. to Yosemite St.104,959
2I-25DenverHampden Ave. to Speer Blvd.236,182
3SH 83 (Parker Rd.)AuroraHampden Ave. to Dartmouth Ave.79,662
4SH 88 (Arapahoe Rd.)Greenwood Village, AuroraI-25 to SH 83 (Parker Rd.)65,656
5I-25Lone Tree, DenverLincoln Ave. to SH 285 (Hampden)242,249
6I-70West Vail, VailChaonix Rd. to Vail Rd.45,000
7SH 85 (Sante Fe Dr.)LittletonBlakeland Dr. to Mineral Ave.43,455
8SH 24 (Powers Blvd.)Colorado SpringsFountain Blvd. to Platte Ave.61,909
9SH 85 (Santa Fe Dr.)Englewood, DenverHampden Ave. to I-2593,128
10SH 287WestminsterSH 36 to 104th Ave.39,047

Without an updated, efficient, safe, and resilient transportation infrastructure, fighting traffic congestion will continue to be part of the daily routine for commuters in Colorado. Fortunately, a comprehensive statewide transportation funding package was signed into law on June 17. Senate Bill 21-260 will allocate nearly $5.3 billion in funding for transportation over the next decade, with the majority of it going towards maintenance and new construction on roads and highways across the state.


For more than three decades, the attorneys at Chalat Hatten & Banker PC have helped individuals and their families obtain justice and compensation after a car accident. If you’ve been injured in a car, truck, pedestrian, bus, or motorcycle accident, please call the car accident attorneys at Chalat Hatten & Banker at 303-861-1042 or send us an email below for a free, no-obligation evaluation of your case. We serve clients around the state of Colorado, including Denver, Fort Collins, Boulder, Aurora, Littleton, Colorado Springs, and Pueblo.