A motorcyclist suffered serious injuries Saturday evening after colliding with a motorist on eastbound Interstate 70 near North York Street, prompting Denver Police to close the HOV lane and lane 1 while one person was taken to a local hospital. Drivers were urged to seek alternate routes as crews worked the scene.
The crash was reported at 8:10 p.m. Saturday, September 12, according to a post from the Denver Police Dept.
on social media. The department said it is investigating the collision between a motorist and a motorcyclist in the area of eastbound I-70 and North York Street, and confirmed that at least one person involved sustained serious injuries. Denver Police typically only issue public crash alerts when an incident meets that threshold of serious injury or results in road closures, the department noted, meaning this crash cleared that bar on both counts.
A Corridor Reshaped by Major Highway Construction
Major highway construction added Express/HOV lanes and lowered the highway beneath a local cover park, according to the Colorado Department of Transportation. That reconfiguration expanded capacity and changed access between I-25 and Chambers Road, altering how traffic — including the HOV lane closed in this crash — moves through the area.
Denver's own traffic data adds another layer of context to crashes along corridors like this one. The city's Vision Zero initiative has identified a High Injury Network covering roughly 5% of Denver street mileage that accounts for about half of all local traffic fatalities and serious injuries, according to the City and County of Denver. A separate Vision Zero traffic analysis found that non-Denver residents are involved in half of all crashes within city limits.
A Record-Setting Stretch for Motorcycle Deaths in Colorado
This crash adds to a grim pattern across the state. Colorado recorded 165 motorcycle fatalities in 2024, the highest single-year death toll in state history, accounting for roughly 24% of all traffic deaths even though motorcycles make up just 3% of registered vehicles, per the Colorado Department of Transportation. The surge has not let up: between January and March of this year, 15 motorcyclists died on Colorado roadways, marking the state's deadliest start to a year for motorcycle fatalities since 2017, the same agency reported in May.
Colorado safety data published this month by CDOT shows that nearly half of all motorcyclists killed in state crashes between 2020 and 2024 were not wearing a helmet. Under Colorado Revised Statutes C.R.S. 42-4-1502, helmets are legally required only for riders and passengers under 18, according to the Colorado State Patrol. Colorado's helmet requirement therefore does not apply to riders and passengers 18 or older.
Lane Filtering Law Still Under Review
Colorado lawmakers are also watching the results of Senate Bill 24-079, which took effect in August 2024 and legalized motorcycle lane filtering — allowing riders to pass stopped vehicles moving in the same direction at 15 mph or less. The law was enacted specifically to reduce rear-end collisions involving stopped motorcycles in heavy traffic, CDOT has said. It was passed as a three-year trial running through September 2027, and the agency must analyze crash data on motorcycle rear-end and side-swipe collisions and report its findings to the legislature by early 2027, as previously detailed by 9News.
Saturday's crash follows several serious motorcycle collisions Denver has seen reported in recent weeks. Hoodline previously covered a critical Chambers Road crash earlier this month, a serious injury crash that shut down South University Boulevard, and an August collision on Colorado Boulevard described at the time as the fourth such crash that week in the city. Other earlier reports covered additional motorcycle crashes. Historically, roughly 58% of all statewide motorcycle fatalities typically occur between June and September, a season Denver is now moving out of even as serious crashes continue.
No further details on the identities of those involved or the specific cause of the Saturday, September 12, 2026, crash have been released. Denver Police continue to investigate, and traffic crash data for the incident is expected to be made available through the city's Open Data Catalog.
