31 people died in traffic crashes in Boulder County in 2021.

17 deaths in unincorporated Boulder County
14 deaths in cities and towns

All Fatal Traffic Crashes in Boulder County in 2021

January 13th, 7:12 a.m. – A motorist on US 36 (North Foothills Highway) in unincorporated Boulder County crossed the centerline at Hygiene Road, causing a four-vehicle crash. The driver of the at-fault vehicle was killed.

January 23rd, early a.m. – A northbound motorist on US 287 drifted off the left side of the road at Plateau Road, striking several trees before coming to rest in a ditch. A passenger in the vehicle was killed.

January 26th, 3:30 p.m. – A southbound motorist on US 287 lost control of their vehicle south of Park Ridge Avenue and spun into oncoming traffic before being broadsided by a northbound motorist. The at-fault driver was killed. See the Times-Call article.

February 19th, 7:03 p.m. – A southbound motorist was driving the wrong way on the shoulder of SH 93 north of SH 170 and entered the northbound lanes, colliding with two other vehicles. The at-fault motorist was killed. See the Daily Camera article.

February 25th, 10:05 p.m. – A pedestrian was crossing US 287 at South Boulder Road in the City of Lafayette when it was struck by a vehicle traveling northbound on US 287.

March 7^th 2:21 p.m. – A fatal crash occurred at the intersection of US 287 and Dillon Rd in the City of Lafayette.

March 31st, 7:30 p.m. – An eastbound motorist on SH 66 attempted to pass another vehicle near Pace Street, causing a head-on crash. The driver of the at-fault vehicle was killed. See the Daily Camera article.

April 8th, 5:57 p.m. – A vehicle traveling eastbound on E 17th Ave in the City of Longmont entered the intersection of Alpine St against the red light. A vehicle traveling northbound on Alpine St approached the intersection with a green light and struck the right side of the eastbound vehicle. The driver of the at-fault vehicle was pronounced dead at the scene.

April 10th, 6:40 a.m. – A northbound motorist on US 287 crossed the centerline at Niwot Road, causing a head-on crash with a southbound motorist. Both drivers involved were killed in the crash. See the Times-Call article.

April 10th, 2:42 p.m. – A southbound motorcyclist on US 287 was weaving in and out of traffic, causing a collision with a parked construction truck in the center median near Arapahoe Road. The driver of the at-fault motorcycle was killed. See the Daily Camera article.

May 3rd, 12:55 p.m. – A southbound motorist on N 63rd Street veered across the northbound lane at Oxford Road and struck a set of jersey barriers. The vehicle then rolled back across N 63rd before coming to rest in a ditch. The driver involved in the single-vehicle crash was killed. See the Daily Camera article.

May 20th, 3:00 p.m. – An eastbound motorist on South Boulder Road struck a bicyclist near Manhattan Drive. The bicyclist involved in the crash was killed. See the Daily Camera article.

May 23rd, 5:10 p.m. – Vehicle #1 was traveling westbound on Hwy 119 in Lane #1 attempting to turn left into a dirt pull-out just west of MP 31. Vehicle #2 (a motorcycle) was traveling eastbound on Hwy 119 in Lane #1 approaching Vehicle #1. Driver #1 failed to yield and turned left in front of Vehicle #2. After impact, both occupants of Vehicle #2 were ejected from the motorcycle. Driver #2 was pronounced deceased at the scene.

June 8^th, 12:12 p.m. – Vehicle #1 was traveling eastbound on Clover Basin Dr and had stopped for a red signal light at S Hover St. Ped #1 was standing at the SW corner of the intersection. When the signal light turned green for eastbound traffic, Vehicle #1 began to make a right-hand turn onto S Hover St the same time that Ped #1 began walking eastbound across the intersection in the crosswalk. Vehicle #1 then struck Ped #1 in the crosswalk.

July 15th, 6:14 p.m. – A westbound motorist on Lee Hill Drive attempted to turn left onto Wagonwheel Gap Road, causing a head-on crash with an eastbound bicyclist on the road. The bicyclist involved in the crash was killed. See the Daily Camera article.

July 16th, 11:50 a.m. – A motorist on Melissa Lane attempted to turn left onto Valmont Road, causing a broadside crash with an eastbound motorcyclist on Valmont Road. The motorcyclist involved in the crash was killed.

July 22nd, 2:55 p.m. – A northbound motorist on US 287, just south of SH 52, rear ended another northbound motorist and then traveled onto the raised center median, causing a collision with a delineator post. The motorist continued to travel northbound on 287, eventually coming to a stop on a raised traffic island next to the right turn lane. The driver of the at-fault vehicle was killed. See the Daily Camera article.

July 26th, 11:20 p.m. – A westbound motorist on SH 119 (the Diagonal Highway) made a left turn at 34^th Street in front of an oncoming vehicle on the Diagonal, causing an approach turn crash. The two passengers in the westbound vehicle were killed in the crash. See the Daily Camera article.

July 27th, 5:40 p.m. – A motorcyclist on SH 119 (the Diagonal Highway) was killed in a single-vehicle crash, just east of Mill Village Court. See the Daily Camera article.

September 18th, 8:00 a.m. – An eastbound motorist on Clover Basin Drive between Renaissance Drive and Delsarto Lane collided with an eastbound bicyclist on a recumbent bicycle. The bicyclist was killed in the crash. See the Daily Camera article.

September 28th, 10:18 a.m. – A northbound motorist on US 287 between Dawson Drive and Lookout Road traveled off the right side of the road, collided with an embankment, and eventually came to a stop on the grass shoulder. The motorist was killed in the single-vehicle crash. See the Daily Camera article.

October 6^th, 12:31 a.m. – Vehicle #1 was traveling northbound in the 500 block of Main St (US 287) in the City of Longmont at a high rate of speed when it collided with a center median curb. Vehicle #1 then collided with 3 trees, several signs and a light pole before rolling over, coming to rest on the west curb line. Driver #1 was ejected from the vehicle during the rollover sequence and was pronounced deceased at the scene.

October 15th, 8:43 a.m. – A northbound bicyclist on SH 119 (the Diagonal Highway) between Oxford Road and N 83^rd Street traveled across two lanes of traffic and collided with a northbound motorist. The bicyclist was killed in the crash. See the Times-Call article.

October 17th, 2:10 a.m. – A northbound motorist on SH 119 (the Diagonal Highway) crossed over the northbound lanes into the center median at the intersection with Jay Road, rolled an unknown number of times in the southbound lanes of SH 119, and eventually came to a stop. The motorist was killed in the single-vehicle crash. Alcohol is a contributing factor in the investigation.

October 20^th, 5:15 p.m. – A fatal single-vehicle motorcycle crash occurred on CO 93 just south of CO 170.

October 28th, 10:48 a.m. – A motorist on E 9th Avenue in the City of Longmont ran through the intersection with Pace Street, causing a broadside crash. Another car nearby was also struck and two passengers in the vehicle were injured. The motorist of the at-fault vehicle and the passenger in the same vehicle were injured. The motorist of the vehicle that was T-boned was killed in the crash. See the Times-Call article.

October 29th, 5:25 p.m. – A fatal single-vehicle crash occurred in the 5600 blk of Flagstaff Rd.

November 14^th, 3:33 a.m. – Vehicle #1 was traveling eastbound on Yellowstone Rd when it crossed over the intersection of Hwy 287 and lost control. Vehicle #1 then ran off the left side of the roadway and crashed through a fence, overturning an unknown number of times. Driver #1 was pronounced deceased at the scene.

November 27th, 5:36 a.m. – A westbound motorist on US 36 at Table Mesa Drive in Boulder ran off the right side of the road and was killed in a single-vehicle rollover crash. See the Daily Camera article.

35 people died in traffic crashes in Boulder County in 2022.

22 deaths in unincorporated Boulder County
13 deaths in cities and towns

All Fatal Traffic Crashes in Boulder County in 2022

January 18th, 7:15 a.m. – During the morning rush hour, near Vermillion Rd in unincorporated Boulder County, a southbound driver on US 287 crossed the centerline into oncoming traffic and collided with a northbound vehicle. The driver of the southbound vehicle died and is believed to have been under the influence of alcohol. See the Times-Call article.

January 20th, 5:40 p.m. – During the evening rush hour, just north of Boulder city limits in unincorporated Boulder County, a northbound motorist on US 36 crossed the centerline into oncoming traffic and collided with a southbound vehicle. The driver of the southbound vehicle was killed. Drugs or alcohol and excessive speeds are believed to be factors. See the Times-Call article.

February 1st, 4:36 p.m. – A northbound driver on US 287 near Yellowstone Rd. in unincorporated Boulder County lost control due to snowy/icy road conditions, crossed the centerline into oncoming traffic, and collided with a southbound vehicle. The driver of the northbound vehicle died. See the Times-Call article.

February 1st, 4:18 p.m. – A southbound driver on US 287 between Isabelle Rd. and Arapahoe Rd. in unincorporated Boulder County lost control due to wet and slushy road conditions, crossed the centerline into oncoming traffic, and collided with two northbound vehicles. The driver of the southbound vehicle died after being transported to a hospital. See the Times-Call article.

March 5^th, 5:00 p.m. – A vehicle was traveling northbound on Hwy 119 just south of Airport Rd in unincorporated Boulder County when it ran off the left side of the roadway into the center median, overturning.

March 12^th, 1:33 a.m. – A vehicle was traveling westbound on Sugarloaf Rd, west of Betasso Rd in unincorporated Boulder County, when it ran off the left side of the roadway and struck a creek embankment with its front.

April 9th, 11:20 p.m. – A southbound driver on CO 157 (Foothills Pkwy) in the City of Boulder was driving the wrong way in the northbound lanes near Valmont Rd and collided with an oncoming vehicle, triggering a three vehicle crash. The driver and passenger in the first vehicle that was struck were both killed. The driver of the at-fault vehicle is being investigated for impaired driving. See the Daily Camera article.

April 14th, 2:30 p.m. – A 69-year-old man drove his vehicle off the road near the intersection of 17^th Ave. and Harvard St. in the City of Longmont. The driver was killed in the crash; there were no passengers and no other vehicles involved. See the Times-Call article.

April 19th, 9:11 p.m. – A man was killed after being hit by at least one vehicle while trying to cross U.S. 36 on foot near mile marker 42 just outside of Superior in unincorporated Boulder County. See the Daily Camera article.

May 14^th, 12:22 p.m. – A vehicle was traveling eastbound on Hwy 66 in the City of Longmont approaching Erfert St in the left turn lane. A motorcycle was traveling westbound on Hwy 66 approaching Erfert St in the right through lane. The vehicle began to make a left turn in front of the motorcycle, causing the motorcycle to strike the passenger side of the vehicle.

May 26th – A motorcyclist on the 500 block of West Main Street in the Town of Lyons lost control of his motorcycle and crashed into a stationary object. The motorcyclist was killed in the crash. See the Daily Camera article.

June 1st, 11:30 a.m. – A head-on collision occurred on South Boulder Road between 68^th Street and Crannell Drive in unincorporated Boulder County. The driver of the vehicle that was struck was killed. The driver of the at-fault vehicle fled the scene. Drugs and/or alcohol are believed to be factors. See the Daily Camera article.

June 1st, 10:15 p.m. – A motorcyclist in the City of Longmont was attempting to make a left turn from northbound US 287 (Main St) onto westbound SH 66 and was struck by a vehicle heading southbound on US 287. The driver of the motorcycle was killed. See the Times-Call article.

June 13th – A single-vehicle crash occurred near mile marker 17 on US 36, just west of Lyons in unincorporated Boulder County. An unoccupied vehicle was found down an embankment between the road and North Saint Vrain Creek. It is believed that the driver was thrown from the vehicle during the crash and ended up in the creek. The driver’s body was recovered from the creek a few miles downstream of the crash. See the Daily Camera article.

June 18th, 12:10 a.m. – A southbound dump truck on Gross Dam Road in unincorporated Boulder County went too close to the edge of the road, causing the ground underneath to give way. The truck then rolled down the embankment and into Gross Reservoir. The driver of the dump truck died. See the Daily Camera article.

June 19^th, 9:47 p.m. – A vehicle heading southbound on Hover St in the City of Longmont struck a pedestrian at Wedgewood Ave. The vehicle the struck a light pole and tree.

June 22nd, 6:53 a.m. – A bicyclist was struck by a vehicle driving eastbound on SH 7 in the City of Lafayette. The bicyclist was killed in the crash. See the Daily Camera article.

June 24th, 7:36 p.m. – A vehicle in unincorporated Boulder County was attempting to make a left turn from southbound US 287 onto eastbound Isabelle Road when it was struck by a motorcycle travelling northbound on US 287. The motorcyclist was killed in the crash. Excessive speed is believed to be a factor in the crash. See the Times-Call article.

July 28th, 7:13 p.m. – A southbound vehicle on US 287 in the City of Lafayette collided with a tractor-trailer traveling east on Dillon Road. All five occupants of the vehicle were taken to the hospital, where one later died. Alcohol and distracted driving are being investigated as possible reasons for the collision. See the Daily Camera article.

August 3rd, 1:27 a.m. – A vehicle traveling westbound on Third Avenue between Alpine and Lashley streets in the City of Longmont collided with a skateboarder. The skateboarder died in the crash. See the Daily Camera article.

August 21^st, 5:43 p.m. – Vehicle #1 was traveling westbound on Hwy 66 approaching Weld County Road 1 in the left turn lane. Vehicle #2 was traveling eastbound on Hwy 66 in unincorporated Boulder County approaching the same intersection. Vehicle #1 failed to yield to Vehicle #2 and was struck on its front right side by the front of Vehicle #2. WCR 1 is a borderline road between Weld and Boulder County.

August 30th, 9:09 a.m. – A vehicle heading eastbound on Third Avenue in the City of Longmont struck and killed a pedestrian who was crossing Third Avenue northbound at Pratt Street. See the Times-Call article.

September 9^th, 12:22 a.m. – A motorcyclist heading northbound on SH 119 in unincorporated Boulder County struck a deer near the intersection of Airport Rd. The motorcyclist was killed as a result of the collision.

September 14^th, 6:00 p.m. – A motorcyclist traveling southbound on Broadway in the City of Boulder collided with an RTD bus making a left turn onto Lee Hill Drive from northbound Broadway. The motorcyclist died after being transported to the hospital. See the Daily Camera article.

September 17^th, 4:45 p.m. – A motorcyclist traveling southbound on CO 7 near MP 31 in unincorporated Boulder County lost control on the wet roadway and ran off the right side of the road.

September 28^th, 12:22 p.m. – A vehicle travelling southbound on US 287 just north of Yellowstone Road in unincorporated Boulder County swerved into the northbound lanes and struck a northbound vehicle head-on. The driver of the northbound vehicle died. See the Daily Camera article.

September 29^th, 7:22 p.m. – A vehicle heading westbound on Niwot Road approaching the intersection with SH 119 in unincorporated Boulder County failed to stop for the red traffic light prior to entering the intersection and was struck by an RTD bus heading northbound on SH 119. The driver of the vehicle was killed in the crash. See the Daily Camera article.

October 9^th, 2:00 p.m. – A motorcycle traveling southbound on Left Hand Canyon Rd. just south of Olde Stage Rd. in unincorporated Boulder County failed to navigate a curve and entered into oncoming traffic, striking a vehicle head-on.

October 19^th, 4:58 p.m. – A motorcycle heading southbound on SH 72 near the town of Ward in unincorporated Boulder County went off the right side of the road and crashed into an embankment. The motorcyclist died in the crash. See the Daily Camera article.

October 22^nd, 8:30 a.m. – A vehicle crossing SH 119 at North 83^rd Street in unincorporated Boulder County collided with a vehicle travelling northbound on SH 119. The driver and passenger in the vehicle crossing SH 119 were killed in the crash. See the Daily Camera article.

December 13^th, 7:17 p.m. – A vehicle driving southbound on US 287 near Vermillion Road in unincorporated Boulder County crossed over into oncoming traffic and struck a vehicle headed northbound on US 287 head-on. Both drivers were pronounced deceased on scene. See the Times-Call article.

December 19^th, 4:00 p.m. – A three-vehicle crash occurred in the vicinity of Pike Rd. and Corporate Center Circle in the City of Longmont. One of the victims was airlifted to the hospital, where they later died from their injuries. Alcohol is a factor in the investigation of the at-fault motorist. See the Daily Camera article.

22 people died in traffic crashes in Boulder County in 2023.

15 deaths in unincorporated Boulder County
7 deaths in cities and towns

All Fatal Traffic Crashes in Boulder County in 2023

January 9th, 5:00 p.m. – A vehicle travelling northbound on US 287 near Jasper Rd in unincorporated Boulder County crossed the painted center median and collided head-on with a vehicle travelling southbound. Both occupants of the northbound vehicle were killed in the crash. See the Daily Camera article.

January 26th, 4:00 p.m. – A vehicle travelling southbound on Foothills Parkway near Valmont Rd in the City of Boulder crossed the median and struck two vehicles travelling northbound. The driver of one of the northbound vehicles was transported to the hospital and later died of their injuries. See the Daily Camera article.

February 14, 9:11 a.m. – A four-vehicle crash occurred on CO 93 at mile marker 15 in unincorporated Boulder County. The driver of one of the vehicles involved died as a result of the crash. See the Daily Camera article.

March 13, 8:54 p.m. – A fatal single-vehicle rollover crash occurred on US 36 near the intersection with Groover Road in unincorporated Boulder County. See the Daily Camera article.

April 4, 7:33 a.m. – A vehicle travelling northbound on Hover Street near Nelson Road in the City of Longmont veered off the road and struck a tree. The driver of the vehicle died as a result of the crash. See the Daily Camera article.

May 4, 10:05 p.m. – A vehicle travelling northbound on US 36 just north of Boulder in unincorporated Boulder County veered into the southbound lanes and then went off the road, flipping several times. Two of the occupants were thrown from the vehicle and declared dead on scene. A third occupant was seriously injured and taken to the hospital. See the Daily Camera article.

May 2, 1:33 a.m. – A vehicle travelling eastbound on CO 119 in Boulder Canyon in unincorporated Boulder County failed to negotiate a curve and ran off the right side of the road, colliding with a large boulder. The driver of the vehicle was killed in the crash. The four other occupants were transported to the hospital with minor injuries.

May 8, 6:16 a.m. – A vehicle travelling eastbound on CO 119 in Boulder Canyon in unincorporated Boulder County failed to negotiate a curve and ran off the right side of the road and down an embankment, rolling multiple times before coming to rest in the creek. The driver was pronounced dead at the scene. Alcohol and excessive speed are considered to be factors in this crash.

May 19, 5:00 p.m. – A vehicle travelling southbound on US 287 near Yellowstone Road in unincorporated Boulder County collided with another southbound vehicle, causing the second vehicle to spin out of control and into the northbound lanes. It then collided with a northbound vehicle. Both occupants of the second vehicle were killed in the crash. See the Daily Camera article.

June 24, 10:45 a.m. – A vehicle in the left turn lane at the intersection of Ken Pratt Boulevard and Bowen Street in the City of Longmont backed up to try to get into the right turn lane. While backing up, the vehicle struck a pedestrian who was crossing the road. The pedestrian was transported to the hospital and later died of their injuries. See the Times-Call article.

July 3, 11:47 a.m. – A vehicle attempting to turn left from CO 72 onto southbound CO 119 south of Nederland in unincorporated Boulder County struck a motorcycle heading northbound on CO 119. The collision caused the motorcycle to overturn, and the motorcyclist was ejected. The motorcyclist was pronounced dead at the scene. See the Daily Camera article.

July 29, 12:08 p.m. – A motorcycle heading westbound on Lefthand Canyon Drive near Spring Gulch Road in unincorporated Boulder County crossed the centerline and hit a tandem bicycle that was travelling eastbound. After colliding with the bicycle, the motorcycle travelled off the road and collided with a large tree branch. The driver of the motorcycle was pronounced dead at the scene. See the Daily Camera article.

July 29, 12:33 p.m. – A vehicle travelling southbound on CO 119 just south of 63rd Street in unincorporated Boulder County crossed from the right-hand lane and onto the shoulder, hitting a bicycle that was travelling southbound on the shoulder. The cyclist was transported to the hospital and later died of their injuries. See the Daily Camera article.

August 3, 3:30 p.m. – A vehicle travelling southbound on US 287 near Yellowstone Road in unincorporated Boulder County proceeded through a large pool of water on the roadway and lost control. The vehicle then spun into the northbound lanes and collided with a northbound vehicle. The driver of the southbound vehicle was transported to the hospital and later died as a result of the crash.

August 3, 7:25 p.m. – A vehicle and a motorcycle collided on 30th Street between Valmont Road and Glenwood Drive in the City of Boulder. The motorcycle driver died as a result of the crash. See the Daily Camera article.

August 12 – A cyclist died after colliding with another bicyclist on Eldorado Springs Drive near Eldorado Springs in unincorporated Boulder County. See the Denver Post article.

August 12, 2:30 p.m. – A vehicle travelling westbound on Table Mesa Drive in the City of Boulder turned south onto Tantra Drive and struck a motorcycle heading eastbound. The motorcycle driver was pronounced dead at the scene. See the Daily Camera article.

August 24, 7:30 a.m. – A pedestrian was struck and killed by a vehicle in the area of Coal Creek Lane and West Cherry Street in the City of Louisville. See the Daily Camera article.

December 5, 7:22 a.m – A driver westbound on Zlaten Drive died on the scene after turning south across East County Line Road and being struck by a semi-truck which was traveling north on East County Line Road. Both vehicles went off the road northwest of the intersection. See the Times Call article.

6 people have died in traffic crashes in Boulder County in 2024.

3 deaths in unincorporated Boulder County
3 death in cities and towns

All Fatal Traffic Crashes in Boulder County in 2024

January 2, 11:59 p.m. – Westbound on Niwot Road, just west of East County Line Road, the driver hit a concrete barrier on the right side of the road. During the crash, the passenger’s seatbelt was torn and he was ejected from the vehicle. He was pronounced dead on the scene. The driver sustained serious injuries and was transported to a local hospital. A high rate of speed and alcohol are considered to be factors in the crash. See the Daily Camera article.

January 3, 9:18 a.m. – At the intersection of Broadway and Alpine Avenue in the City of Boulder, a driver traveling south on Broadway and turning left/east onto Alpine struck a woman in the crosswalk walking north. The pedestrian was taken to the hospital with life-threatening injuries and died of her injuries the same day. See the Daily Camera article.

January 6, 8:42 a.m. – A head-on crash on U.S. Highway 287 north of Yellowstone Road with the northbound vehicle crossing the centerline resulted in the deaths of the drivers of both vehicles. Excessive speed is suspected in the crash. Alcohol and drugs are not suspected. See the Daily Camera article.

February 5, 10:38 p.m. – The driver going north on 30th Street struck a retaining wall on the north side of the intersection of 30th Street and Diagonal Highway. The woman was taken to the hospital with life-threatening injuries and died the next night. According to the release, officers believe speed and alcohol were factors in the crash. See the Daily Camera article.

February 9, 4:20 p.m. – A two-vehicle crash in Longmont at 11th Street and Collyer Avenue resulted in one of the two drivers being taken to the hospital but dying the next day because of injuries sustained in the crash. Police did not say if the other driver was injured. See the LongmontTimes-Call article.