I-70 Crash

Bidgee / CC BY-SA 3.0

Sixteen people lost their lives and another 337 were injured between 2013 and 2017 because the drivers of large trucks or buses were inexperienced or unfamiliar with Colorado's roads.

Those findings are based on KUNC's analysis of state transportation crash data. They come as authorities continue to investigate the semi-truck crash on Interstate 70 in Lakewood last week involving 28 vehicles, killing four people.

CSP Golden

The company that owns a semitrailer involved in a fiery pileup that killed four people near Denver had two trucks taken out of service for brake-related issues in the past year, including one about two months before the Colorado crash.

The four people killed after a semitrailer slammed into vehicles on a crowded stretch of Interstate 70 near Denver were all men from Colorado.

The Jefferson County Coroner's Office identified them as 61-year-old Doyle Harrison of Hudson, 67-year-old William Bailey of Arvada, Miguel Angel Lamas Arellano of Denver and 69-year-old Stanley Politano of Arvada. They were traveling in separate vehicles in Thursday's crash, which involved 24 cars and four semitrailers.

A speeding semitrailer whose driver appeared to one witness to be "wide eyed" and "terrified" passed a truck ramp before plowing into other vehicles on a crowded highway near Denver, killing four people and injuring at least six others, according to court documents released Saturday.

The truck driver, 23-year-old Rogel Lazaro Aguilera-Mederos, of Houston, made his first court appearance Saturday after being arrested on suspicion of vehicular homicide.

Updated at 1 p.m. ET

A highway crash killed at least four people and started a large fire on Interstate 70 along the western edge of Denver on Thursday, in a disaster that police say was triggered by a semitruck that slammed into a group of cars that were stopped in traffic.

CSP Golden

2:15 p.m. update:

Colorado officials say they hope to reopen a major highway by Saturday morning after the interstate was badly damaged by a fiery crash near Denver.

Police have said four people were killed on Thursday after a semi-truck plowed into vehicles on Interstate 70, causing a fire so intense that it melted the roadway and metal off of cars.