Which roads in Allentown see the most crashes? Route 22 and I-78 carry the Lehigh Valley’s freight traffic, and MacArthur Road and Hamilton Street concentrate commercial turning movements, making all four recurring crash corridors.
For people who live here, the dangerous roads Allentown, PA drivers talk about are not abstractions. They are the commute to a warehouse shift, the drive to school, and the trip home, and a single crash on any of them may upend a family’s year.
Knowing where and why crashes happen helps drivers stay alert, and it helps injured people understand what a claim may involve. Our Allentown car accident attorneys see the same corridors, and the same crash patterns, again and again.
Which Allentown Roads Have the Most Crashes?
The Lehigh Valley’s recurring crash corridors are:
- Route 22, the region’s busiest highway, with heavy freight traffic and short merges
- I-78, a long-haul truck corridor serving the warehouse economy
- MacArthur Road (Route 145), with dense retail driveways and frequent left turns
- Hamilton Street, downtown Allentown’s main street, with heavy pedestrian activity
- Lehigh Street, where commercial and residential access points mix
Key Takeaways for Dangerous Roads in Allentown, PA
- Route 22 carries roughly 107,000 vehicles a day, including about 10,500 tractor-trailers, according to the Lehigh Valley Planning Commission.
- The busiest stretch of road in the region is where I-78 and Route 22 run together near Route 100, at more than 126,000 vehicles a day.
- Allentown recorded more than 8,600 crashes from 2019 to 2023, including 284 fatal or serious-injury crashes.
- Hamilton Street, Tilghman Street, and Lehigh Street are among the city’s highest-injury corridors.
- Claims against PennDOT or a municipality require written notice within six months of the crash.
Route 22: The Lehigh Valley’s Busiest Highway
Route 22 is the Lehigh Valley’s primary east-west artery and its busiest highway by far. It carries commuters, local shoppers, and a steady stream of freight on a road built decades before the region’s warehouse boom.
Why Is Route 22 So Dangerous?
Route 22 combines very high traffic volume with short merge lanes and closely spaced interchanges. About 107,000 vehicles use it on an average day, and roughly 10,500 of them are tractor-trailers, according to the Lehigh Valley Planning Commission.
The commission’s current corridor study counted 2,050 crashes on Route 22’s mainline and 117 on its ramps from 2020 through 2024. About 60% of westbound lane miles and more than 78% of eastbound lane miles exceed the statewide average crash rate for similar highways.
Rear-end and sideswipe collisions are the familiar result. Traffic backs up at interchanges, drivers change lanes to reach an exit, and trucks merging from short on-ramps have little room to reach highway speed.
Trouble Spots Along Route 22
Several stretches stand out to anyone who drives Route 22 daily:
- The MacArthur Road (Route 145) interchange, the busiest section of the corridor at about 91,000 vehicles a day
- Fullerton Avenue to Airport Road, a segment with 13 serious injuries and one fatality in recent years, now slated for widening to three lanes
- The Lehigh River Bridge, which carries nearly 110,000 vehicles a day, according to PennDOT
- The Tilghman Street interchange in Upper Macungie, where PennDOT crash data shows 86 crashes from 2019 to 2023, 34 of them at the same eastbound merge
PennDOT has since designated Route 22 a safety corridor, which brings new signs and increased enforcement while longer-term widening moves forward.
I-78: A Long-Haul Truck Corridor
I-78 links the Lehigh Valley to New Jersey, New York, and Harrisburg, and it serves as the backbone of the region’s warehouse and distribution economy. That role puts heavy trucks and passenger cars in the same lanes at very different speeds.
How Warehouse Traffic Shapes I-78 Crashes
The busiest stretch of road in the region is where I-78 and Route 22 run together between their merge point and Route 100 in Upper Macungie. An average of 126,705 vehicles travel through that spot each day, a 54.5% increase over 10 years, based on PennDOT traffic data.
West of Allentown, the share of trucks climbs sharply. Berks County’s freight plan reports that its sections of I-78 carry about 45% truck traffic, feeding the warehouses clustered around Fogelsville and the Route 100 corridor.
Speed differences drive many I-78 crashes. Loaded trucks slow on grades and accelerate slowly from ramps, while passenger cars close in fast, and a moment of distraction becomes a rear-end or lane-change collision.
Why Truck Crashes Carry Larger Insurance Policies
Federal law requires for-hire interstate carriers hauling general freight to carry at least $750,000 in liability coverage under 49 C.F.R. § 387.9. Pennsylvania’s minimum for a private car is only $15,000 per person.
That difference shapes how crashes involving commercial trucks are investigated and resolved. Federal safety records, driver logs, and several possible defendants usually come into play.
MacArthur Road (Route 145): Retail Traffic and Turning Conflicts
MacArthur Road runs north from Allentown through Whitehall Township, lined almost continuously with shopping centers, restaurants, gas stations, and the Lehigh Valley Mall. Its crash risk comes less from speed than from the number of vehicles entering and leaving the road.
Every curb cut is a place where a driver turns across traffic or pulls into a lane. Drivers watching for a gap in oncoming traffic often miss a car in the far lane, and a driver slowing to turn into a parking lot gets struck from behind.
Those left-turn and angle collisions tend to happen at moderate speeds, but side impacts leave occupants with little protection. Weekend and holiday shopping traffic, along with the Route 22 interchange at MacArthur Road’s southern end, keeps the corridor congested for much of the day.
Hamilton Street and Lehigh Street: Allentown’s Urban Crash Corridors
Inside the city, the risk shifts from high-speed collisions to intersection conflicts and pedestrian crashes. The City of Allentown’s Safe Streets for All Action Plan found that 284 people were victims of fatal or serious-injury crashes in the city from 2019 to 2023.
The same analysis found that just three crash types, angle crashes, crashes striking a pedestrian or cyclist, and crashes into fixed objects, made up 75% of fatal and serious-injury crashes in Allentown.
Hamilton Street
Hamilton Street is downtown Allentown’s main commercial street, with storefronts, bus stops, on-street parking, and steady foot traffic. The city lists it among its highest-injury corridors, along with Tilghman Street and Lehigh Street.
The city’s own Hamilton Street improvement plan names three problems: speeding, intersection conflicts, and a lack of safe pedestrian crossings. Drivers pulling out of parking spaces, turning across crosswalks, and running late lights create much of the danger.
Lehigh Street
Lehigh Street runs south from downtown through a mix of shopping plazas, auto businesses, and residential blocks. Its challenge is access: driveways, side streets, and business entrances come one after another, so drivers constantly merge in and out of traffic.
That pattern produces the same angle and turning crashes seen on MacArthur Road, with more pedestrians nearby. Portions of Lehigh Street, Hamilton Street, and Tilghman Street are owned and maintained by PennDOT, which matters when a road condition plays a role in a crash.
How Does Winter Weather Change the Risk?
Winter weather makes every corridor above more dangerous, and the highways feel it first. Snow, sleet, and black ice turn Route 22’s short merges and I-78’s long grades into places where vehicles lose traction and trucks jackknife.
Quick-moving snow squalls may drop visibility to near zero on I-78 within minutes, which has led to chain-reaction pileups on Pennsylvania interstates. Fog along the Lehigh River and early winter darkness during evening commutes add to the risk on surface streets.
Drivers who fail to slow for conditions may still be responsible for a crash. Under 75 Pa.C.S. § 3361, Pennsylvania requires a speed that is safe for existing conditions, not just one under the posted limit.
What to Do After a Crash on a Highway vs. a Surface Street
The first minutes after a crash look different on Route 22 than on Hamilton Street. On a highway, safety comes first because of traffic speed, while on a city street, evidence and witnesses are usually closer at hand.
After a Highway Crash on Route 22 or I-78
Pennsylvania’s Steer It, Clear It law, 75 Pa.C.S. § 3745.1, directs drivers in a crash with no injuries to move drivable vehicles out of travel lanes. When anyone is hurt, the vehicles stay put, and the priority becomes getting help.
Many drivers find these steps helpful after a highway crash:
- Moving to the shoulder or off the highway when it is safe, and turning on hazard lights
- Staying inside a vehicle with seatbelts on when stepping out onto the highway is unsafe
- Calling 911, since Pennsylvania State Police usually respond to crashes on Route 22 and I-78
- Photographing vehicle positions, damage, and any truck’s USDOT number once it is safe
State Police crash reports are available through the Pennsylvania State Police online request system.
After a Crash on a City Street
On Hamilton Street, Lehigh Street, or MacArthur Road, the Allentown Police Department or the local township police usually respond. Surface-street crashes often happen near businesses, bus stops, and homes, which means more witnesses and more cameras.
Helpful steps often include collecting witness names and phone numbers, noting nearby businesses that might have security video, and photographing traffic signals, crosswalks, and signs. Pennsylvania requires a police report under 75 Pa.C.S. § 3746 when a crash injures someone or leaves a vehicle unable to drive.
In either setting, medical care right away creates a record that connects injuries to the crash. Any statement to the other driver’s insurer may later be used in its fault argument.
How Long Do You Have to File After an Allentown Crash?
Pennsylvania gives most people two years from the date of a crash to file a personal injury lawsuit under 42 Pa.C.S. § 5524. Insurance negotiations do not pause that deadline.
Your own auto policy also shapes the claim. Pennsylvania drivers choose full tort or limited tort, and limited tort restricts pain and suffering damages to serious injuries unless an exception applies, such as a crash with a vehicle registered out of state.
Our page on Allentown car accident claims explains both elections and their exceptions in more detail.
When a Road Defect Contributes: Claims Against PennDOT or a Municipality
Sometimes the road itself plays a role, through a pothole, a missing sign, a worn lane marking, or a dangerous design. Claims against PennDOT or a municipality are possible, but the path is narrow, and the deadlines are short.
The Narrow Exceptions to Government Immunity
Pennsylvania shields government agencies from most lawsuits, with limited exceptions. For PennDOT and other Commonwealth agencies, 42 Pa.C.S. § 8522 allows claims for dangerous conditions of Commonwealth highways, and for potholes only when the agency had written notice in time to fix them.
For municipal streets, 42 Pa.C.S. § 8542 allows claims for dangerous street conditions the municipality knew about or had reason to know about. Because Hamilton, Lehigh, and Tilghman Streets are partly state-owned, the first question is often which agency controls the stretch where the crash happened.
The Six-Month Notice and Damage Caps
Written notice must reach the government agency within six months of the crash under 42 Pa.C.S. § 5522. Missing that notice may end the claim even when the two-year lawsuit deadline has not passed.
Damages are capped in these cases, generally at $250,000 per person against Commonwealth agencies under § 8528 and $500,000 per incident against local agencies under § 8553. Claims from crashes in Allentown are generally heard in the Lehigh County Court of Common Pleas.
Dangerous Roads in Allentown, PA: Questions Answered by Our Attorneys
What is the most dangerous road in Allentown?
By traffic volume and crash rate, Route 22 stands out, with most of its lane miles above the statewide average crash rate for similar highways. Within the city, the answer depends on the measure: Hamilton, Tilghman, and Lehigh Streets see more of the crashes that seriously injure pedestrians and cyclists.
Why are there so many truck accidents on Route 22 and I-78?
The Lehigh Valley has become one of the Northeast’s major warehouse and distribution hubs, and Route 22 and I-78 connect those warehouses to the rest of the country. Trucks also increasingly leave the highways for local roads such as Route 100 and Airport Road, where tight turns and signals add new conflict points.
What are the first steps after a crash on a highway in Allentown?
Safety comes first: move drivable vehicles out of travel lanes when no one is hurt, and call 911. If a truck was involved, the company name and USDOT number on the cab door identify the carrier, which matters later because trucking companies often begin their own investigation within hours.
Is it possible to sue PennDOT if a road defect caused my crash?
Sometimes, when the defect falls within one of Pennsylvania’s narrow immunity exceptions. Notice must reach PennDOT within six months, and for a Commonwealth agency, the Office of Attorney General also receives it. Road defects are often repaired quickly, so photographs taken soon after the crash carry real weight.
How long do I have to file a claim after an Allentown car accident?
Most people have two years from the crash to file a lawsuit. For an injured child, the two-year clock generally starts on the child’s 18th birthday, while claims against your own insurer for underinsured motorist benefits follow a separate timeline set by the policy.
Driving the Same Roads Tomorrow
After a crash, most people still have to drive Route 22 to work or cross Hamilton Street to reach the store. Getting answers about a claim does not have to take time a family needs for recovery.
At The Slocum Firm, our Lehigh Valley personal injury team offers free consultations. We’re available 24/7 at (570) 209-7376. Hablamos español. No fees unless we win.
