Traffic backed up for miles near Dry Creek Road as investigators documented a five-vehicle wreck on the busy corridor.
CENTENNIAL, CO — A multi-vehicle crash shut down most northbound lanes of Interstate 25 near Dry Creek Road on Wednesday evening and left one person dead and several others injured, according to local authorities who closed the highway for hours as they investigated.
Officials said the collision unfolded during the evening commute in the northbound lanes just south of Denver, snarling traffic from the Tech Center through Arapahoe County. First responders from South Metro Fire Rescue, the Arapahoe County Sheriff’s Office and Colorado State Patrol converged on the scene, and the Colorado Department of Transportation warned drivers to expect long delays. The closure stretched between the Dry Creek Road exits as troopers documented debris, mapped the roadway and worked to reopen lanes. The crash drew added attention because the fatality was a well-known state lawmaker, intensifying public interest and questions about how the wreck happened and how long the closure would last.
Emergency dispatchers began receiving calls around 6 p.m. about a serious crash in the northbound lanes near Dry Creek. Responders found multiple vehicles with heavy damage, including one on its side, and immediately blocked traffic while assessing injuries. Deputies said three people were hurt, and one person died at the scene. “The cause is going to take some time to figure out,” Deputy John Bartmann of the Arapahoe County Sheriff’s Office said at the scene, noting that investigators were speaking with witnesses and reviewing how the initial impact triggered subsequent collisions. Northbound traffic was diverted off the interstate at Dry Creek, with drivers guided to reenter via local on-ramps once lanes reopened later that night.
Colorado State Patrol troopers led the investigation and conducted standard crash-reconstruction steps: photographing vehicle positions, measuring skid and gouge marks, and checking for disabled vehicles involved in secondary fender-benders north of the main scene. South Metro Fire Rescue reported extended delays as crews stabilized a tipped vehicle, cleared fluids and ensured no additional hazards remained. CDOT’s alert system pushed multiple updates as lane closures shifted from a full northbound shutdown to a gradual reopening. Authorities said the five vehicles involved sustained varying levels of damage; at least one required a heavy wrecker. The full tally of patients included three people transported with injuries and the one person pronounced dead. Officials did not immediately release the names of those injured.
The wreck occurred in a stretch of I-25 that regularly carries heavy commuter traffic between Greenwood Village, Centennial and the Denver Tech Center. Crashes there often cascade into backups on Dry Creek Road, Arapahoe Road and the frontage streets that feed the interstate. Wednesday’s closure coincided with peak holiday travel, adding to congestion across the south metro. In recent years, law enforcement agencies in the corridor have reported frequent multi-vehicle collisions during dusk and early evening hours, when volumes are high and visibility can shift quickly under winter lighting conditions. While troopers did not speculate about contributing factors, investigators typically examine speed, following distance, potential impairment, distraction and roadway conditions when reconstructing a crash of this size.
Officials said the fatality in Wednesday’s crash was a sitting Colorado state senator, prompting expressions of grief from the Capitol and a new round of questions about timing and cause. The lawmaker was traveling northbound when the chain-reaction crash occurred. State leaders issued statements late Wednesday and early Thursday, calling the death a profound loss for colleagues and constituents. Troopers stressed that the identification process follows standard procedures handled by the county coroner, who will confirm the victim’s identity and notify next of kin before any formal release. Investigators said they would also review any nearby traffic cameras, on-scene data from modern vehicles and witness video submitted after the crash.
After the roadway was secured and vehicles were removed, CDOT reopened most lanes late Wednesday, with crews returning Thursday morning to check for remaining debris along shoulders and to straighten bent guardrail. Colorado State Patrol said a full report could take weeks, depending on forensic downloads from vehicles, toxicology results where applicable and the time needed to reconcile witness accounts. If investigators determine traffic charges are warranted, they would be filed after the reconstruction is complete and forwarded to the appropriate judicial district. Authorities said any public update would be announced ahead of time, with the next briefing expected after the preliminary reconstruction findings are reviewed.
Drivers caught in the closure described a sudden stop-and-go that turned into a standstill, with some leaving the interstate at Dry Creek and looping through business parks to rejoin traffic farther north. Tow operators rotated through the scene with flatbeds and a heavy wrecker as firefighters swept glass and absorbent from the left and center lanes. “It was a mess—sirens, lights and everyone trying to get over at once,” said Jacob Allen, who commutes from Highlands Ranch and exited at Dry Creek. Along the frontage road, employees from nearby offices watched from sidewalks while patrol cars blocked on-ramps and troopers redirected drivers toward alternate routes.
As of Thursday morning, investigators had not publicly detailed the initial triggering event in the five-vehicle sequence. The coroner’s office was working to finalize identification and cause of death. Colorado State Patrol said it would release additional information after notifying families and completing early-stage measurements of the crash scene. Transportation officials said intermittent, short-term lane closures may occur for follow-up work, but the interstate is open. The next major milestone is a preliminary findings update expected in the coming days.
Author note: Last updated November 27, 2025.