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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day6,192 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 9.0% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 32.1 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 17.4% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 49.4 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $95,174 |
A typical monitored road in Northampton County, Pennsylvania sees 6,192 vehicles per day, while its 667 miles of monitored roads together handle 5,203,191 vehicle-miles traveled per day (≈1.9 billion per year). About 1 in 11 vehicles is a truck, fewer than the 1 in 9 across Pennsylvania.
At 6,192 vehicles per day, the average road in Northampton carries somewhat more traffic than the state average of 5,617 (10% more) - a critical factor for logistics and site planning. In total volume terms, its road network carries about 2.4% of Pennsylvania's statewide total of vehicle-miles. By volume, Northampton's 6,192 vehicles per day outpaces 88% of counties in Pennsylvania.
At 32.1 minutes, the average travel time is 7% lower than the state level. On travel time, Northampton runs shorter than 80% of counties in Pennsylvania.
Congestion is somewhat higher than the state level, at a ratio of 17.4% (5% higher).
| Traffic | vehicles per day15,246 |
|---|---|
| Trucks | 13.0% |
| Average travel time | 41.0 min |
| Congestion ratio | 35.9% |
| Drivers’ average age | 49.1 yrs |
| Drivers’ average income | $94,393 |
Highways carry about half of all travel in Northampton County, Pennsylvania, 46% of vehicle-miles. The average highway carries 15,246 vehicles per day, 166% more than the average non-highway road in the same area, which carries 5,741 vehicles per day.
With 18% of the road miles (119 miles in 853 segments), highways punch above their length, carrying 2,399,295 vehicle-miles traveled per day (≈876 million per year).
By highway travel volume, Northampton outranks 76% of counties in Pennsylvania.
Highway truck concentration here runs 18% lower than the state average, at 13.0%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
Northampton's highway truck share (13.0%) is lower than 71% of counties in Pennsylvania. 83% of counties in Pennsylvania see fewer highway trucks per day than Northampton's roughly 1,977.
| Traffic | vehicles per day5,741 |
|---|---|
| Trucks | 5.6% |
| Average travel time | 31.7 min |
| Congestion ratio | 16.4% |
| Drivers’ average age | 49.7 yrs |
| Drivers’ average income | $95,586 |
Local roads carry about half of all travel in Northampton County, Pennsylvania, 54% of vehicle-miles. The average non-highway road carries 5,741 vehicles per day.
Spread over 548 miles and 17,117 segments, 82% of the road network, local roads carry a lighter load per mile: 2,803,896 vehicle-miles traveled per day (≈1.0 billion per year). About 1 in 18 vehicles on non-highway roads is a truck (5.6%).
Compared to highways, non-highway routes see 57% fewer trucks by share.
At 16.4%, the non-highway congestion ratio matches the state level closely.
Northampton's average driver income is higher than 92% of counties in Pennsylvania. Northampton's median driver age is lower than 65% of counties in Pennsylvania.
Of the four measures, highway truck share differs most: Northampton County runs 18% below the Pennsylvania average. Its truck share is also 15% below.
| Metric | Northampton County | Pennsylvania average | Difference |
|---|---|---|---|
| Traffic | 6,192 | 5,617 | +10.2% |
| Truck % (Total Traffic) | 9.0% | 10.6% | -15.4% |
| Truck % (Highway) | 13.0% | 15.8% | -17.7% |
| Avg. Travel Time | 32.1 min | 34.6 min | -7.2% |
Nothing in this table sets Northampton County sharply apart from the 4 areas nearest to it, though it has the second busiest roads of the five. Bigger and busier at once: more road than the areas around it and heavier traffic on it, which makes it the centre of gravity for travel in this part of the map.
| Area | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Northampton County | 6,192 | 9.0% | 5,203,191 | 32.1 min | 17.4% |
| Lehigh County, Pennsylvania | 7,010 | 9.9% | 6,235,569 | 33.7 min | 18.2% |
| Monroe County, Pennsylvania | 5,442 | 10.4% | 3,655,768 | 30.6 min | 17.3% |
| Carbon County, Pennsylvania | 3,469 | 13.5% | 1,488,496 | 33.6 min | 9.9% |
| Warren County, New Jersey | 4,385 | 12.7% | 2,616,020 | 34.2 min | 15.1% |
| Pennsylvania average | 5,617 | 10.6% | N/A | 34.6 min | 16.5% |
Northampton County sits in the top quarter of the Pennsylvania field on average driver income, at #6 of 67.
| Measure | Northampton County | Pennsylvania rank |
|---|---|---|
| Traffic volume (AADT) | 6,192 | #9 of 67 |
| Highway vehicle-miles per day | 2,399,295 | #16 of 64 |
| Truck share on highways | 13.0% | #46 of 64 |
| Highway trucks per day | 1,977 | #12 of 64 |
| Average travel time | 32.1 min | #53 of 67 |
| Average driver income | $95,174 | #6 of 67 |
| Average driver age | 49.4 yrs | #44 of 67 |
The two ends of this table sit far apart: #6 of 67 on average driver income, against #53 of 67 on average travel time.
The three busiest roads in Northampton County average 47,926 vehicles a day, 7.7 times the county average of 6,192 across all its monitored roads.
Hill to Hill Bridge leads with 49,902 vehicles a day, 3,043 of them trucks (6.1%). Lehigh Valley Thruway is practically level with it at 49,238. I 78 carries the most trucks, 9,278 a day (20.9% of its traffic), although it ranks #4 for all traffic.
Freight stands out on I 78: trucks are 20.9% of the traffic there, against 9.0% county-wide.
Trips using I 78 are long: a median of 56.7 minutes against 32.1 county-wide, the mark of a through route.
Hill to Hill Bridge is a trunk route for the county, carrying 8.1 times the county average on its busiest stretch; trucks are 6.1% of it, below the county-wide 9.0%.
Travel on Lehigh Valley Thruway's busiest stretch runs 48% over free-flow time, against 17% across the county, so expect slower peak hours.
PA 33 is one of the more congested roads here: trips take 47% longer than at free-flow speed, against 17% county-wide.
I 78 carries 7.2 times the county average at its busiest, 9,278 of them trucks (20.9%, above the county-wide 9.0%).
Drivers on Gene Hartzell Memorial Bridge are on long journeys, a median 44.2 minutes against 32.1 county-wide: a through route more than a local street.
The average monitored road in Northampton carries 6,192 vehicles per day, 10% more than the Pennsylvania average of 5,617.
Northampton's average travel time of 32.1 minutes is shorter than 80% of counties in Pennsylvania.
Drivers on Northampton roads have a median age of 49 years, and the median household income of the neighborhoods trips originate from averages $95,174, 7% above the Pennsylvania average.
The average trip in Northampton takes 32.1 minutes, 7% shorter than the Pennsylvania average of 34.6 minutes, delays at signals and congestion included.
Trucks make up about 9.0% of all traffic in Northampton County, Pennsylvania, rising to 13.0% on highways, where long-haul freight concentrates.
Approximately 30% of highway traffic and 9% of non-highway traffic consists of vehicles whose trip originates outside Northampton County, Pennsylvania. A sizeable share of highway traffic comes from outside, mixed with local trips on the same roads.
Weekday traffic has two busy windows: AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 2:00 PM to 6:00 PM - about 72% above the daily average.
Hill to Hill Bridge carries the most, 49,902 vehicles per day on its busiest stretch, followed by Lehigh Valley Thruway (49,238), PA 33 (44,636), I 78 (44,410), Gene Hartzell Memorial Bridge (43,317). Figures are AADT, both directions combined.
I 78, with about 9,278 trucks per day on its busiest stretch, 20.9% of its 44,410 vehicles.
About 49,902 vehicles per day in both directions on its busiest stretch, including 3,043 trucks (6.1%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.

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Historical traffic pattern databases
The same traffic breakdown for the areas closest to Northampton County, Pennsylvania.
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