Millcreek's Most Dangerous Roads

Each crash in UDOT's records that fell inside Millcreek's current city boundary was matched to a street, using the state road map together with the road named in the officer's report. That gives a count for every street rather than for single intersections. Crashes on I-215, I-15, I-80 and their ramps are counted in a separate section below, and crashes in parking lots and on other private property are left out of the street totals. Serious or fatal means the report recorded a death or a suspected serious injury.

UDOT recorded 7,595 crashes inside Millcreek over those seven and a half years. Of them, 861 were on the freeways or their ramps, 240 were on private property and 25 could not be placed on a street, leaving 6,469 on Millcreek streets. Those street crashes included 159 that were serious or fatal (2.5%) and took 16 lives. In the Salt Lake, Utah, Davis, Weber, Summit, Cache and Washington County records used here, the serious-or-fatal share for street crashes is 2.6%. Someone was reported hurt, counting possible injuries, in 30.2% of Millcreek's street crashes, a little under the 32.1% for those counties.

Two Corners That Stand Out

State Street's stretch inside Millcreek recorded 335 crashes, and 189 of them happened where it meets 3900 South. 3900 South's own record adds another 44 at the same corner, for 233 in all, 8 of them serious or fatal. The second corner is 900 East at 4500 South: 96 crashes on 900 East's side of the count and 91 on 4500 South's, 187 together, 6 of them serious or fatal.

Because a crash at a junction is credited to only one street, usually the one the officer named, a corner's full total has to be pieced together from both streets' records. Read that way, these two intersections account for 420 of Millcreek's 6,469 street crashes, 6.5%, and 14 of the 159 serious or fatal crashes. Both sit on state routes or meet one: State Street is US-89, and 4500 South is SR-266.

The Streets That Fill Millcreek's Crash Records

Streets are listed by the number of crashes UDOT placed on them inside city limits, January 2018 through August 4, 2025. The cross streets shown are where each street's own crashes gather most, using that street's share of each corner.

• 3300 South (SR-171) — 835 crashes, 18 serious or fatal, 2 deaths. Side impacts make up 43.5%. Its busiest corners are 2300 East (67), 900 East (65, with 5 serious or fatal) and 700 East (64). Its yearly count fell from 150 in 2018 to 76 in 2024.
• 4500 South (SR-266) — 558 crashes, 15 serious or fatal, no deaths. Nearly half, 47.1%, were rear-end collisions, and pedestrians were involved in 8 of the 15 serious or fatal crashes. 900 East (91) and 1300 East (62) are its busiest corners.
• 900 East — 534 crashes, 8 serious or fatal, 1 death. Its crashes gather at 4500 South (96), 3300 South (60) and 3900 South (54). A driver left the scene in 72 of them.
• 3900 South — 527 crashes, 8 serious or fatal, 2 deaths. 900 East (59), 700 East (50) and State Street (44) are its busiest corners. It went from 106 crashes in 2018 to 53 in 2024.
• 700 East (SR-71) — 391 crashes, 11 serious or fatal, 1 death. Its crashes split almost evenly among 3900 South (76), 3300 South (71) and 4500 South (68, 4 of them serious or fatal). UDOT's traffic estimates reach about 39,000 vehicles a day on this stretch.
• Highland Drive — 387 crashes, 15 serious or fatal, 5 deaths. Its corners at 3300 South (73) and 3900 South (71) see the most crashes, and pedestrians were involved in 5 of its serious or fatal crashes.
• State Street (US-89) — 335 crashes, 17 serious or fatal, 1 death. 189 of its crashes were at 3900 South. Side impacts are 52.8% of its total, the highest share among these ten.
• 1300 East — 315 crashes, 6 serious or fatal, no deaths. Its crashes are spread across three arterials: 3300 South (53), 3900 South (47) and 4500 South (46).
• Wasatch Boulevard — 283 crashes, 4 serious or fatal, no deaths. It is the one street on this list whose count nearly doubled, from 23 crashes in 2018 to 45 in 2024. 3900 South (57) and 3800 South (39) are its busiest corners.
• 2300 East — 218 crashes, 6 serious or fatal, 1 death. Rear-end collisions are 47.2% of its crashes, the highest share among these ten, and 62 of its crashes were at 3300 South.

Together the ten streets carry 4,383 crashes, 67.8% of the Millcreek total, with 108 of the 159 serious or fatal crashes and 13 of the 16 deaths. Three of them, 3300 South, 3900 South and 4500 South, are the long east-west routes that most of the city's north-south streets cross, and they show up again and again in the corner counts.

Highland Drive and the Fatal Crashes

Sorted by serious or fatal crashes, the order shifts. 3300 South still leads with 18, but State Street moves up to second with 17, and 4500 South and Highland Drive tie at 15. State Street's 5.1% serious-or-fatal share is the highest among Millcreek's fifteen busiest streets. Highland Drive carries the heaviest loss: 5 of its 15 serious or fatal crashes were fatal, one in three, against 16 of 159 citywide. No other street among the fifteen busiest recorded more than 2 deaths.

Side Impacts, Pedestrians and Older Drivers

Side-impact crashes are the most common type on Millcreek streets at 37.3%, above the 32.6% across the seven counties, and rear-end crashes are 28.0%. The worst outcomes fall elsewhere. UDOT's single-vehicle or not-applicable group, which covers a vehicle hitting a pedestrian, a cyclist or a fixed object, holds 78 of the 159 serious or fatal crashes. Pedestrians were in 2.6% of all crashes but 37 of the serious or fatal ones, 23.3%, against 15.1% across the seven counties. Cyclists were in 14 of them.

Officers flagged an older driver in 20.7% of Millcreek street crashes, against 14.9% across the seven counties, and a teen driver in 17.4%, against 23.8%. A driver left the scene in 788 crashes, 12.2%, compared with 8.6%. Mornings are quieter than elsewhere: 9.3% of crashes came between 6 and 9 a.m., against 12.6%. Crashes fell from 957 in 2018 to 767 in 2024, about 20%, but serious or fatal crashes did not: 21 in 2018, 21 in 2024, and 31 in 2023, the highest year.

I-215 and the Other Freeways

Freeways and ramps account for 861 crashes inside Millcreek, 11.3% of the city's total, and they are kept out of the street ranking. I-215 had 590 of them, with 13 serious or fatal and 2 deaths; officers flagged speed in 205. I-15 had 171, with 3 serious or fatal and 1 death, and I-80 had 86. Crashes below Utah's property-damage reporting threshold never reach UDOT's records, and nothing after August 4, 2025 is included.

Insurance, Fault and Deadlines After a Millcreek Crash

Your own personal injury protection is the first coverage to pay, with at least $3,000 for medical care whoever caused the crash (Utah Code § 31A-22-307). To claim pain and other non-economic losses from the at-fault driver, the injury must pass the threshold in § 31A-22-309, such as a fracture, permanent disability or disfigurement, or medical costs above $3,000; an uninsured motorist claim is not held to that threshold. A driver who flees and is never identified is treated as uninsured (§ 31A-22-305(2)(b)). Any fault assigned to you lowers the award, and you recover only if the other parties together were more at fault than you (§ 78B-5-818). The deadline for most injury lawsuits is four years (§ 78B-2-307). If you believe a road's design or upkeep contributed, a written notice of claim must reach the city or the state within one year (§ 63G-7-402). Our Millcreek car accident and Millcreek personal injury pages explain how these claims proceed, and the statewide guides cover how fault is proven, how to file a PIP claim and the deadline to bring a case.

What a Millcreek Injury Claim Covers

• Money already lost: emergency and follow-up treatment, medication, wages missed during recovery, and the cost to repair or replace the vehicle.
• Harm that has no invoice: physical pain, anxiety behind the wheel, and the routines and activities an injury interrupts.
• What lies ahead: later surgery or therapy, reduced earning power, and help at home when an injury does not fully heal.

How the Counts Were Made

Records: UDOT's public Crash_Locations data, all crash types, January 1, 2018 through August 4, 2025, where the published series ends. City limits: UGRC's municipal boundary map, with today's boundary used for every year. Street matching: the closest UGRC Utah Roads segment within 35 meters, preferring the road the officer named; statewide, the match agreed with the officer's road in about 89% of crashes. Serious or fatal: coded fatal or suspected serious injury. Flags such as hit and run or older driver are what the officer recorded, not findings of fault. County comparisons use the seven counties in this data. Every city we have ranked this way is listed on our statewide page, Utah’s most dangerous roads.