Boulder, Colorado

Boulder Uninsured Motorist Accident Lawyers Who Fight Your Own Insurer

When the driver who hit you on US-36, the Diagonal Highway, or 28th Street had no insurance, fled the scene, or carried limits too low to cover your injuries, the claim usually has to come from your own auto policy. We represent Boulder crash victims in UM and UIM claims against their own carriers. Serving Boulder County from our Denver office. No fee unless we win.

No fee unless we win

Call (303) 209-9395 Get my free UM/UIM case review

It's More Than Money.

Serving Boulder from our Denver Office CGH Injury Lawyers 2701 Lawrence St., Suite 201 Denver, CO 80205 (303) 209-9395 Se habla espanol

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Colorado law requires every auto insurer in the state to offer UM/UIM coverage equal to your bodily injury liability limits, and any rejection must be in writing by the named insured (C.R.S. 10-4-609). If you never made a valid written rejection, you may still have this coverage now.
UM coverage pays when the at-fault driver had no insurance, fled the scene, or was a phantom vehicle. UIM pays the gap when the other driver had a limit too low to cover your losses. Under C.R.S. 10-4-609(4), buying UM automatically gives you UIM.
Because you are filing against your own insurer, the same tactics used on third-party claimants get pointed at you: slow responses, low first offers, and recorded-statement traps. Knowing that going in changes how the claim plays out.
At CGH Injury Lawyers, we represent Boulder crash victims in UM and UIM claims against their own carriers, serving Boulder County from our Denver office at 2701 Lawrence St., Suite 201. We pull every declarations page, confirm your coverage and any stacking, document the medical record, and prepare every case for trial or arbitration at the Boulder County Justice Center.

Free first consultation. No fee unless we win. Call (303) 209-9395.

C.R.S. 10-4-609: what the statute requires

Every Colorado auto insurer must offer UM/UIM coverage equal to the bodily injury liability limits you buy. You can reject it, but only in writing by the named insured (C.R.S. 10-4-609).
Under C.R.S. 10-4-609(4), purchasing UM coverage automatically includes UIM coverage. They come bundled together by operation of law.
A 2007 amendment to C.R.S. 10-4-609, effective January 1, 2008, removed the provision that had let insurers reduce UIM by whatever the at-fault driver's carrier paid. Under C.R.S. 10-4-609(1)(c), the coverage sits in addition to the liability recovery and cannot be reduced by a setoff from other coverage. Whether limits from more than one vehicle or policy can be combined is a separate, fact-specific question that depends on the declarations pages, how premiums were charged, and the policy language.
A rejection that does not meet the statute's requirements is potentially invalid, which means coverage you thought you did not have may still exist. We review the rejection language before assuming there is no policy to draw from.

The four triggers: when UM/UIM applies

The at-fault driver had no liability insurance. Your UM coverage becomes the only practical recovery path when the other driver cannot pay.
Hit-and-run. The driver fled before you got a plate, or before you could identify them. Colorado treats an unidentified fleeing driver as uninsured for UM purposes.
Phantom vehicle. A driver cut you off or ran you off the road without contact. Colorado allows UM recovery in some phantom-vehicle cases, but corroborating evidence such as a witness or video is typically needed.
Underinsured driver. The other driver had coverage, but their policy limit was lower than your documented losses. Their insurer pays its available limit, and your UIM claim covers the remaining gap up to your own UIM limit.

The filing deadline and comparative fault

Colorado UM/UIM claims are governed by C.R.S. 13-80-107.5, the statute the Colorado Supreme Court applied in Pham v. State Farm, 2013 CO 17. The deadline turns on the procedural history of the underlying claim. Your policy may also impose a shorter contractual notice deadline. Missing that notice can give the insurer a defense, so it must be identified early.

Colorado follows a modified comparative negligence rule with a 50 percent bar (C.R.S. 13-21-111). If you are found less than 50 percent at fault, you recover damages reduced by your percentage of fault. If you are 50 percent or more at fault, you recover nothing. Adjusters can push your fault share higher on a UM/UIM claim, which reduces the payout, so challenging that assessment is central to protecting your recovery.

High-Risk Corridors

US-36, the Diagonal (CO-119), and 28th Street

US-36, long known as the Denver-Boulder Turnpike, enters the city as 28th Street, a major commercial corridor, and the transition from highway speeds to signalized retail traffic produces rear-end and red-light collisions all year. CO-119 splits into two distinct hazards: the Diagonal Highway carrying commuters to Longmont, and Boulder Canyon Drive, where curves and grade give drivers far less room for error.

US-287 through the eastern county appears repeatedly in Boulder County's fatal-crash record, with head-on collisions among the documented patterns. Boulder County's Vision Zero program recorded 19 traffic deaths county-wide in 2024 and 17 in 2025, and single-vehicle and head-on crashes appear repeatedly in the county's published fatal-crash log.

Trauma Care

Foothills Hospital (Boulder Community Health)

Boulder Community Health's Foothills Hospital, at 4747 Arapahoe Avenue, operates a 24-hour emergency department in the city and is an American College of Surgeons verified Level II Trauma Center. Boulder Community Health states that it was the first designated Level II Trauma Center in Boulder County. The American College of Surgeons describes Level II centers as providing initial definitive trauma care for a wide range of injuries and injury severity, and the records they generate document the full scope of crash injuries that become the foundation of a damages claim.

The most severe crash injuries may be transferred to a Denver-area Level I center, and when that happens the records from both facilities matter. Medical records carry the weight of your claim at every stage from negotiation through trial, so we collect the complete chain before any demand goes out.

Courthouse

Boulder County District Court (20th Judicial District)

Personal injury cases arising in Boulder County are filed in the Boulder County District Court, the 20th Judicial District, located at the Boulder County Justice Center, 1777 6th St, Boulder, CO 80302. UM/UIM claims that do not settle through arbitration or negotiation go to the same court system, with Colorado rules of civil procedure and local Boulder County practices governing timelines and discovery. We handle cases filed in the 20th Judicial District, serving our Boulder clients from our Denver office.

Winter Hazards

Canyon grades, upslope storms, and black ice

Boulder sits where the plains meet the Front Range, and winter conditions create genuine crash exposure on city roads and canyon approaches alike. Upslope storms can drop heavy snow on the city while the Diagonal stays merely wet, and that moisture can freeze into black ice overnight.

Boulder Canyon's curves punish drivers who carry highway speed into the grade. Crashes caused by weather conditions still trigger UM/UIM coverage when the at-fault vehicle had no insurance or fled the scene, so a weather-related crash is not automatically a barrier to recovery.

The Statute

C.R.S. 10-4-609

Colorado requires your insurer to offer UM/UIM coverage equal to your liability limits. We know the statute, the stacking rules, and how to read a rejection form for flaws an adjuster is not going to point out.

Bad Faith on the Table

When your insurer stalls, we have a remedy.

When an insurer unreasonably delays or denies a valid UM/UIM claim, Colorado gives you a separate statutory bad-faith cause of action under C.R.S. 10-3-1115 and 10-3-1116. We document insurer conduct from day one so that a lowball offer or unexplained delay shifts the negotiation dynamic.

Honest Case Review

We decline cases we cannot stand behind.

Not every crash produces a UM/UIM claim worth pursuing. If your fact pattern does not support one, we will tell you that in the free review rather than sign you up and let the case stall. When the law supports your claim, we fight hard.

Stacking Review

Multiple vehicles may mean multiple limits.

Whether limits from more than one vehicle or policy can be combined depends on the declarations pages, how premiums were charged, and the policy language. We pull every declarations page and every endorsement to find available limits before any demand goes out.

Trial-Ready

ABOTA member. Boulder County is not a problem.

Managing Partner Kevin Cheney is a member of the American Board of Trial Advocates (ABOTA) and has served as Treasurer of the Colorado Trial Lawyers Association. Timothy G. Tarr has been recognized in The Best Lawyers in America for Personal Injury Litigation - Plaintiffs since 2023. Carriers pay attention to which firms are prepared to try a case in the Boulder County District Court.

Bilingual

Hablamos espanol.

Spanish-speaking staff and attorneys serve Boulder's Spanish-speaking community. Language is never a barrier to a free case review.

No Win, No Fee

Contingency only.

You pay nothing out of pocket for legal fees. We advance costs and collect only from a settlement, verdict, or arbitration award.

Get medical care immediately

If your injuries are serious, emergency transport may take you to Boulder Community Health's Foothills Hospital, the Level II Trauma Center serving Boulder, or on to a Denver-area Level I center. Seek care even if you feel okay at the scene. Adrenaline masks injury, and a gap in medical treatment gives the insurer a pre-existing-condition argument.
Call law enforcement

A police report confirming the other driver fled the scene, had no insurance, or could not be identified is essential to a hit-and-run or uninsured UM claim. For crashes on state highways in unincorporated Boulder County, the Colorado State Patrol typically responds. Within Boulder city limits, including the stretches of US-36/28th Street and CO-119 that run through the city, the Boulder Police Department typically takes the report.
Document everything at the scene

Photograph the damage, your injuries, and the crash location. Note nearby businesses with exterior cameras, dashcam footage from other vehicles, and the names of any witnesses. Retention periods vary widely from one business to the next, so identify anything that can corroborate what happened before you leave the scene.
Notify your own insurer promptly

Your UM/UIM policy may contain a contractual notice requirement shorter than the statutory deadline. Report the crash to your own carrier promptly, but do not give a recorded statement or accept any offer before speaking with us. The insurer may frame the recorded statement as routine, but it can lock you into answers before your medical picture is complete.
Pull your declarations page

Find your auto insurance declarations page. It shows your UM/UIM limits, whether you have more than one vehicle on the policy, and any endorsements. If you live in a household with other insured vehicles, stacking may be available. Bring that document to the free case review and we will map every dollar of available coverage.
Call us before the adjuster calls again

Once we are on the case, we handle all insurer communication. We confirm the at-fault driver's uninsured or underinsured status, secure the police report and any available footage, develop the full medical record before any demand goes out, and document every instance of insurer delay or lowballing for the bad-faith record. Call (303) 209-9395.

Economic damages (not limited by Colorado's non-economic cap)

Emergency care at Foothills Hospital, surgery, and follow-up treatment
Future medical costs and rehabilitation
Lost wages and lost earning capacity
Out-of-pocket expenses tied to the crash and recovery

Non-economic damages

Pain and suffering
Emotional distress
Loss of enjoyment of life
Physical impairment and disfigurement, which Colorado treats as a separate category that the non-economic damages cap does not limit (C.R.S. 13-21-102.5(5))

For civil actions filed on or after January 1, 2025, Colorado caps non-economic damages such as pain and suffering at $1.5 million under C.R.S. 13-21-102.5, with inflation adjustments beginning January 1, 2028. Lower caps apply to actions filed before that date, so which cap governs is fact-specific. Economic damages such as medical bills, future care, and lost wages are not limited by that cap, though any UM/UIM recovery is still bounded by the limits on the policy you are claiming under.

Compensation for physical impairment or disfigurement is also not limited by that cap (C.R.S. 13-21-102.5(5)), which matters in serious-injury UM/UIM cases. We structure the demand to reach every available category, including bad-faith penalties when insurer conduct warrants it.

"The injuries are pre-existing"

Blanket medical authorizations reaching back many years are a common insurer request, and they can be used to argue your injuries predate the crash. We manage the scope of medical releases and work with your treating providers to document what was caused by the crash versus what existed before it.
"You were partly at fault"

Colorado's modified comparative negligence rule bars recovery if you are 50 percent or more at fault (C.R.S. 13-21-111). Adjusters can push your fault share above 49 percent, which would eliminate or significantly reduce a UM/UIM payment. We build the liability record from the crash report, physical evidence, and witness accounts to challenge any inflated fault allocation.
"You validly rejected UM/UIM coverage"

A rejection must be in writing by the named insured to be valid under C.R.S. 10-4-609. Rejections that fail the statute's requirements can be found invalid. We review every rejection document before accepting that no UM/UIM coverage exists.
"The other driver actually had insurance"

Drivers sometimes carry expired cards, have coverage lapses, or drive vehicles insured by someone else. We independently verify the at-fault driver's insurance status through law enforcement records and direct insurer inquiry, not just the other driver's word at the scene.
Delay as a strategy

Slow document requests, file reassignments, and silence after a demand are common. When delay becomes unreasonable, Colorado's statutory bad-faith remedy under C.R.S. 10-3-1115 and 10-3-1116 becomes available. We document the timeline of insurer conduct from first notice forward so that pattern is on record.

In a UM/UIM claim, you are negotiating with your own auto carrier. Every dollar it pays comes off its books. The conflict is structural, not personal.
You may have cooperation duties under your policy, including reporting the crash promptly and providing documentation. What cooperation actually requires depends on the policy language, and reading that language carefully matters before you agree to a recorded statement or accept a fault label in the first call.
When an insurer unreasonably delays or denies a valid claim, Colorado gives you a separate cause of action under C.R.S. 10-3-1115 and 10-3-1116. A documented bad-faith record is one of the few things that reliably moves a carrier off a low number.
Most UM/UIM disputes resolve through negotiation or arbitration, which some policies require before a lawsuit can be filed. We know both tracks and use the one that fits your case best.

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What is the difference between UM and UIM coverage in Colorado?

Uninsured motorist (UM) coverage pays when the at-fault driver had no insurance, fled the scene, or was a phantom vehicle. Underinsured motorist (UIM) coverage pays the gap when the at-fault driver had insurance but their policy limit was lower than your documented losses. Both come from your own auto policy, and under C.R.S. 10-4-609(4), buying UM automatically includes UIM. A crash on US-36 or the Diagonal with an uninsured driver in Boulder triggers your UM coverage, not the other driver's.

Does Colorado law require me to have UM/UIM coverage?

Colorado law does not require you to buy UM/UIM coverage, but every auto insurer in the state must offer it equal to your bodily injury liability limits under C.R.S. 10-4-609. A rejection must be in writing by the named insured to be valid. Rejections that fail the statute's requirements can be found invalid, so even if you believe you rejected this coverage, it is worth confirming before assuming no policy applies.

The driver who hit me on US-36 fled the scene. Do I still have a claim?

Yes. A hit-and-run driver is treated as uninsured under Colorado UM coverage. Report the crash immediately to law enforcement and to your own insurer. Physical evidence, witnesses, and dashcam footage all strengthen the claim, and footage held by nearby businesses along 28th Street or Canyon Boulevard can be overwritten on a short retention cycle. Do not wait to notify your insurer, because your policy may contain a notice deadline shorter than the statutory filing deadline.

How long do I have to file a UM/UIM claim after a Boulder crash?

Colorado UM/UIM claims are governed by C.R.S. 13-80-107.5, the statute the Colorado Supreme Court applied in Pham v. State Farm, 2013 CO 17. The deadline turns on the procedural history of the underlying claim, and your individual policy may impose a shorter contractual notice deadline. Missing that contractual notice can give the insurer a defense. Because the timing is fact-specific, contact a lawyer early after a crash on any Boulder County road.

Can I stack UM/UIM coverage across multiple vehicles in Colorado?

Combining UM/UIM limits across multiple vehicles or policies is fact-specific, not automatic. A 2007 amendment to C.R.S. 10-4-609, effective January 1, 2008, removed the provision that had let insurers reduce UIM by what the at-fault carrier paid, and C.R.S. 10-4-609(1)(c) bars a setoff from other coverage. The same subsection also allows a single policy issued for a single premium covering multiple vehicles to be limited to applying once per accident. Whether combining applies to your Boulder case depends on the declarations pages, how premiums were charged, and the policy language, which is why we pull every one before a demand is built.

I was on my bike when an uninsured driver hit me. Does UM coverage apply?

It can. UM/UIM coverage generally follows the insured person rather than the vehicle, so a policyholder or covered household member struck while cycling or walking may be able to claim under their own auto policy, depending on its terms. In a city with as many cyclists as Boulder, this is a commonly overlooked source of recovery, and it costs nothing to have the policy reviewed.

Where would my Boulder UM/UIM lawsuit be filed?

Personal injury cases arising in Boulder County are filed in the Boulder County District Court, the 20th Judicial District, located at the Boulder County Justice Center, 1777 6th St, Boulder, CO 80302. Some UM/UIM policies also require arbitration before a lawsuit can be filed. At CGH Injury Lawyers, we handle both tracks, representing Boulder clients in the 20th Judicial District from our Denver office at 2701 Lawrence St., Suite 201.

How does Colorado's comparative fault rule affect my UM/UIM recovery?

Colorado follows a modified comparative negligence rule with a 50 percent bar (C.R.S. 13-21-111). If you are found less than 50 percent at fault, you can recover damages, but your award is reduced by your percentage of fault. If you are 50 percent or more at fault, you recover nothing. Adjusters can push your fault share higher, which reduces a UM/UIM payout. We build the liability record from the crash report, physical evidence, and witnesses to challenge any inflated fault allocation made by your own insurer.

Boulder

Practice Area

Denver Money Pages

Firm

It's More Than Money.

An uninsured driver hurt you in Boulder. We make your own carrier answer for it.

Free consultation for Boulder crash victims. No fee unless we win. Serving Boulder County from Denver. Call (303) 209-9395.

Call (303) 209-9395 Get my free UM/UIM case review

Prefer to read first? See how Colorado UM/UIM law works statewide.

CGH Injury Lawyers · 2701 Lawrence St., Suite 201, Denver, CO 80205

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Boulder Uninsured Motorist Accident Lawyers Who Fight Your Own Insurer

Colorado UM/UIM law decoded for Boulder crash victims

C.R.S. 10-4-609: what the statute requires

The four triggers: when UM/UIM applies

The filing deadline and comparative fault

Where Boulder UM/UIM crashes happen, and where your case goes

US-36, the Diagonal (CO-119), and 28th Street

Foothills Hospital (Boulder Community Health)

Boulder County District Court (20th Judicial District)

Canyon grades, upslope storms, and black ice

Why Boulder victims choose CGH Injury Lawyers for UM/UIM claims

C.R.S. 10-4-609

When your insurer stalls, we have a remedy.

We decline cases we cannot stand behind.

Multiple vehicles may mean multiple limits.

ABOTA member. Boulder County is not a problem.

Hablamos espanol.

Contingency only.

What to do after an uninsured or hit-and-run crash in Boulder

Get medical care immediately

Call law enforcement

Document everything at the scene

Notify your own insurer promptly

Pull your declarations page

Call us before the adjuster calls again

What compensation can Boulder UM/UIM victims recover?

Economic damages (not limited by Colorado's non-economic cap)

Non-economic damages

Defenses Boulder UM/UIM insurers use, and how we answer them

"The injuries are pre-existing"

"You were partly at fault"

"You validly rejected UM/UIM coverage"

"The other driver actually had insurance"

Delay as a strategy

Why filing against your own insurer is different

Boulder UM/UIM claims: frequently asked questions

Related pages

An uninsured driver hurt you in Boulder. We make your own carrier answer for it.