HELENA — A collision involving a vehicle and a motorcycle on Custer Avenue on Tuesday, April 21, 2026, resulted in serious injuries.
The crash occurred at approximately 12:30 p.m. Near the I-15 interchange by Home Depot, according to multiple local news reports.
A motorcyclist was taken to St. Peter’s Health for treatment of what are said to be “significant” injuries.
KRTV
The driver of the other vehicle was uninjured.
KTVH
The nature and extent of the injuries to the individuals involved in the collision has not been released.
KRTV
Traffic was packed from Custer Avenue to Cedar Street on Tuesday after law enforcement blocked off the westbound lane of Custer to investigate a vehicle crash.
Independent Record
This is a developing story, and we will provide additional information as it becomes available.
KTVH
The Montana Department of Transportation reported I-15 NB at MP 194.0 as crash-related with blocked lanes, detours, and flaggers in effect as of 2:03 p.m. On April 21, 2026.
Additional information from 511MT.net indicated that traffic turning left (westbound) off the I-15 Custer exit was being diverted eastbound due to the crash at the I-15/Custer interchange.
No other details have been released at this point, including the suspected cause of the crash.
KRTV
As of Wednesday, April 22, 2026, no further updates regarding the motorcyclist’s condition or the investigation into the collision have been made available by authorities.