Rollover, T-bone and head-on hotspots around Pittsburgh

If you drive around Pittsburgh, the terrain works against you. Rivers push traffic onto a short list of bridges, and hillsides bend on-ramps into blind curves. In 2024, police in Allegheny County reported 10,214 crashes, and 73 of them were fatal.¹ This page covers three of the crash types that hurt people most often here: the broadside at an intersection, the head-on, and the rollover. It lays out what the county and state data actually say, and which roads keep coming up.

T-bone crashes and the intersections that cause them

The angle crash, what most drivers call a T-bone or broadside, is the one where the front of one vehicle hits the side of another at a junction. PennDOT counts it as the most common crash type in Pennsylvania. In 2024 there were 32,969 angle crashes across the state, and they killed 247 people.² Intersections carry a heavy share of the total: 38% of all reported crashes in Pennsylvania that year happened at one.³

Two driver behaviors cause most of them. PennDOT recorded 8,971 crashes in 2024 where a driver "proceeded without clearance," meaning they entered the intersection before it was actually clear, and those crashes killed 53 people. Another 13,313 crashes involved improper turning.⁴ A side impact leaves the struck occupant almost nothing to absorb the force, which is why a broadside so often means serious injury rather than a dented door.

Allegheny County's own numbers show how concentrated the danger is. The Allegheny County Comprehensive Safety Action Plan, produced by the county, the City of Pittsburgh and the Southwestern Pennsylvania Commission with PennDOT District 11, found that 79% of the region's severe crashes happen on just 9% of its roads. Over five years, 339 people died and 1,757 were seriously hurt on those roads.⁵ Inside the city, the Department of Mobility and Infrastructure mapped a High Injury Network and found that about 10% of Pittsburgh's streets account for 76% of fatal crashes and 83% of serious-injury crashes.⁶ Pittsburgh recorded 17 traffic deaths in 2024, its first year below 20 since 2018.⁷

The plans name names. Butler Street through Lawrenceville, Penn Avenue in Point Breeze and Kennywood Boulevard in West Mifflin sit among the ten priority corridors, and DOMI's mapping also flags Baum Boulevard, Centre and Liberty avenues, Frankstown Avenue and Grant Street downtown as repeat crash sites.⁵⁶ If you want to check a specific corner, the Western Pennsylvania Regional Data Center publishes PennDOT's record of every police-reported crash in the county going back to 2004, with location and injury severity.⁸

Head-on crashes and Route 28

Head-on crashes are rare and lethal. They made up only 3.5% of Pennsylvania's 2024 crashes, 3,902 in all, but they caused 11.2% of the deaths, 126 people.² When two vehicles meet front to front, the closing speed is roughly the sum of the two, and that math is why a crash type this uncommon ranks so high for fatalities.

Around Pittsburgh, the head-on problem has an address: Route 28. The expressway along the Allegheny River logged 30 wrong-way crashes between 2019 and 2023.⁹ PennDOT answered with a $4.8 million wrong-way detection system covering the ramps from Harmar down toward Pittsburgh's North Shore. Thermal cameras and roadway sensors watch each off-ramp; if a car turns in the wrong way, flashing LED signs try to turn the driver around, and if that fails the system alerts the regional traffic management center and state police.⁹¹⁰ PennDOT press officer Steve Cowan was blunt that the equipment will not stop wrong-way driving by itself but should cut how often it happens.⁹ PennDOT plans to extend the same detection to the Interstate 79 interchange with Route 910 in Wexford.¹⁰ The stakes are not abstract. In one Route 28 case, a driver headed south in the northbound lanes hit an oncoming car head-on and killed a 31-year-old, with alcohol suspected.¹¹

Rollovers, and why your vehicle matters

PennDOT files a rollover under "non-collision," the category for a vehicle that overturns instead of striking something. Statewide in 2024 there were 3,222 non-collision crashes and 26 deaths.² What you drive changes the odds a lot. Among light trucks, SUVs and vans, 4.0% of crashes involved a rollover, and rollovers accounted for 22.0% of occupant deaths in that group. For passenger cars the same figures were 2.7% and 15.2%.¹² A taller, heavier vehicle tips more easily, and Pittsburgh's hillside ramps and embankment shoulders are the kind of geometry where a run-off-road slide becomes a roll.

Seat belts matter more in a rollover than in almost any other crash, because an unbelted occupant can be thrown from the vehicle as it turns. In Allegheny County, 80% of people in crashes were belted in 2024, just under the statewide 82%.¹³ That gap looks small on paper and large in an ambulance.

If one of these just happened to you

A few things you do now will matter later. Every crash that police respond to in Allegheny County becomes a record in PennDOT's database, so get the crash report number before you leave the scene and request the report once it is filed.⁸ Photograph the vehicles, the intersection or ramp, the signals and any skid marks while they are still there. See a doctor even if you feel fine, because injuries from an angle crash or a rollover often surface a day or two later. And if you are trying to figure out whether you need help with a claim, you can start with a legal directory instead of a search engine.

Knowing which crashes cluster where, and why, will not change the map. It is how you drive the next mile a little smarter.

This is general information, not legal advice.

Sources

1. Pennsylvania Department of Transportation, 2024 Pennsylvania Crash Facts and Statistics, Pennsylvania Crashes by County (p. 59). https://www.pa.gov/content/dam/copapwp-pagov/en/penndot/documents/travelinpa/safety/documents/2024_cfb_linked.pdf

2. Pennsylvania Department of Transportation, 2024 Pennsylvania Crash Facts and Statistics, Crashes by Crash Type (p. 9). https://www.pa.gov/content/dam/copapwp-pagov/en/penndot/documents/travelinpa/safety/documents/2024_cfb_linked.pdf

3. Pennsylvania Department of Transportation, 2024 Pennsylvania Crash Facts and Statistics, intersection crash share (Introduction and Drivers, p. 25). https://www.pa.gov/content/dam/copapwp-pagov/en/penndot/documents/travelinpa/safety/documents/2024_cfb_linked.pdf

4. Pennsylvania Department of Transportation, 2024 Pennsylvania Crash Facts and Statistics, Crashes Involving Driver Error (p. 23). https://www.pa.gov/content/dam/copapwp-pagov/en/penndot/documents/travelinpa/safety/documents/2024_cfb_linked.pdf

5. Allegheny County Comprehensive Safety Action Plan (City of Pittsburgh, Allegheny County and the Southwestern Pennsylvania Commission, with PennDOT District 11), 2026. https://www.spcregion.org/wp-content/uploads/2026/03/ACSAP_Final_260422-Interactive.pdf

6. 90.5 WESA, "Update on Pittsburgh's Vision Zero efforts to end traffic fatalities," reporting City of Pittsburgh Department of Mobility and Infrastructure High Injury Network data, Oct. 31, 2025. https://www.wesa.fm/development-transportation/2025-10-31/vision-zero-pittsburgh-infrastructure-redesign

7. City of Pittsburgh, 2025 Vision Zero Annual Memo. https://engage.pittsburghpa.gov/vision-zero/2025-vision-zero-annual-memo

8. Western Pennsylvania Regional Data Center, Allegheny County Crash Data (source: PennDOT), 2004-2024. https://data.wprdc.org/dataset/allegheny-county-crash-data

9. Roads & Bridges, "Pennsylvania Installs New Wrong-Way Driver Detection System on Route 28," 2026. https://www.roadsbridges.com/road-traffic-safety/news/55314937/pennsylvania-installs-new-wrong-way-driver-detection-system-on-route-28

10. CBS News Pittsburgh, "PennDOT tests wrong-way driver detection system on Route 28." https://www.cbsnews.com/pittsburgh/news/wrong-way-driver-detection-system-route-28/

11. CBS News Pittsburgh, "At least 1 killed in Route 28 crash." https://www.cbsnews.com/pittsburgh/news/at-least-1-killed-in-route-28-crash/

12. Pennsylvania Department of Transportation, 2024 Pennsylvania Crash Facts and Statistics, Light Truck/SUV/Van Rollovers Compared to Passenger Cars (p. 53). https://www.pa.gov/content/dam/copapwp-pagov/en/penndot/documents/travelinpa/safety/documents/2024_cfb_linked.pdf

13. Pennsylvania Department of Transportation, 2024 Pennsylvania Crash Facts and Statistics, Percent Seat Belt Use in Crashes by County (p. 64). https://www.pa.gov/content/dam/copapwp-pagov/en/penndot/documents/travelinpa/safety/documents/2024_cfb_linked.pdf