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Traffic heat map of Middlesex County, Massachusetts: 2,380 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Yankee Division Highway

Middlesex County, Massachusetts Traffic Counts

How busy are the roads of Middlesex County, Massachusetts? We measure 2,380 road miles, divided into 90,371 segments, with multi-sourced, cross-verified mobile and sensor data. It moves more highway traffic than any other county in Massachusetts. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Middlesex County, Massachusetts

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day9,540
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

6.7%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

33.4 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

27.2%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

45.7 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$136,201

The average monitored road in Middlesex County, Massachusetts carries 9,540 vehicles per day. Across its 2,380 miles of monitored roads, that adds up to 31,388,712 vehicle-miles traveled per day (≈11.5 billion per year). Trucks are 6.7% of traffic, close to the 6.9% across Massachusetts.

Busier roads than 85% of counties in Massachusetts

Middlesex sees 17% higher average daily traffic volume than the state average (9,540 vehicles per day against 8,166), suggesting more demand on each road - a critical factor for logistics and site planning. Network-wide, Middlesex accounts for about 23% of Massachusetts's statewide total of vehicle-miles. Middlesex carries more traffic than 85% of counties in Massachusetts.

At 33.4 minutes, the average travel time matches the state level closely. On travel time, Middlesex runs shorter than 62% of counties in Massachusetts.

The congestion ratio of 27.2% runs slightly higher than the state level (13% higher) - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Middlesex County, Massachusetts

Trafficvehicles per day33,780
Trucks7.8%
Average travel time40.5 min
Congestion ratio63.1%
Drivers’ average age46.1 yrs
Drivers’ average income$136,915

Highways carry about half of all travel in Middlesex County, Massachusetts, 52% of vehicle-miles. The average highway carries 33,780 vehicles per day, 287% more than the average non-highway road in the same area, which carries 8,738 vehicles per day.

Yet highways are only 16% of the road network, 374 miles in 2,893 segments, so each mile of them is 3.3 times as busy as the average road mile.

By highway travel volume, Middlesex ranks first in Massachusetts.

More highway trucks than 91% of counties in Massachusetts

Highway truck concentration here runs 8% lower than the state average, at 7.8%. The highway traffic mix is typical for Massachusetts: neither freight- nor commuter-dominated.

By truck concentration, highways here outrank 55% of counties in Massachusetts. 91% of counties in Massachusetts see fewer highway trucks per day than Middlesex's roughly 2,621.

non-highway traffic icon

Non-highway Traffic in Middlesex County, Massachusetts

Trafficvehicles per day8,738
Trucks5.5%
Average travel time33.2 min
Congestion ratio26.0%
Drivers’ average age45.2 yrs
Drivers’ average income$135,803

Local roads carry about half of all travel in Middlesex County, Massachusetts, 48% of vehicle-miles. On the average non-highway road, that comes to 8,738 vehicles per day.

Spread over 2,007 miles and 87,478 segments, 84% of the road network, local roads carry a lighter load per mile: 15,117,964 vehicle-miles traveled per day (≈5.5 billion per year). Trucks make up 5.5% of non-highway traffic, about 1 in 18 vehicles.

Drivers from higher-income areas than 85% of counties in Massachusetts

The concentration of trucks on non-highway roads is 29% lower than on highways.

Non-highway congestion (26.0%) runs slightly higher than the state level (13% higher).

Trip origins here have higher average income than 85% of counties in Massachusetts. 85% of counties in Massachusetts have an older driver population than Middlesex.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and a long afternoon plateau from 12:00 PM to 7:00 PM, with volumes reaching approximately 60% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 16% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
August–October is the high season, with volumes +5% versus the annual average.
Lowest month:
January is the quietest month, with volumes -8% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Middlesex County, Massachusetts, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +5% in high season.

Middlesex County vs. Massachusetts Traffic Comparison

Middlesex County's biggest difference from the Massachusetts average is its average daily traffic per road, 17% above it.

MetricMiddlesex CountyMassachusetts averageDifference
Traffic9,5408,166+16.8%
Truck % (Total Traffic)6.7%6.9%-3.6%
Truck % (Highway)7.8%8.4%-7.5%
Avg. Travel Time33.4 min34.4 min-2.8%

How Middlesex County compares

Middlesex County moves more traffic than any nearby county

Against the 4 nearest areas, Middlesex County moves 2.1 times the total daily travel; it has the third busiest roads of the five. It is bigger rather than busier: the extra travel comes from carrying more road, not from heavier roads.

Middlesex County and the 4 nearest county-level areas by centroid distance, with the Massachusetts average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Middlesex County9,5406.7%31,388,71233.4 min27.2%
Suffolk County, Massachusetts13,0016.2%8,032,97738.1 min36.7%
Norfolk County, Massachusetts10,6526.3%16,383,68734.4 min28.1%
Essex County, Massachusetts9,3936.4%15,203,20532.9 min26.8%
Worcester County, Massachusetts6,8238.7%19,369,69035.8 min19.9%
Massachusetts average8,1666.9%N/A34.4 min24.0%

Middlesex County ranked within Massachusetts

Middlesex County posts the highest highway travel volume of any county-level area in Massachusetts.

Middlesex County ranked among 14 county-level areas in Massachusetts (1 = highest); measures without data in every county rank a smaller field, down to 12.
MeasureMiddlesex CountyMassachusetts rank
Traffic volume (AADT)9,540#3 of 14
Highway vehicle-miles per day16,270,748#1 of 12
Truck share on highways7.8%#6 of 12
Highway trucks per day2,621#2 of 12
Average travel time33.4 min#9 of 14
Average driver income$136,201#3 of 14
Average driver age45.7 yrs#12 of 14

The two ends of this table sit far apart: #1 of 12 on highway travel volume, against #12 of 14 on average driver age.

Busiest roads in Middlesex County, Massachusetts

Traffic concentrates on a few corridors: the three busiest roads average 132,365 vehicles a day, against 9,540 on the average road in Middlesex County.

Yankee Division Highway leads with 144,352 vehicles a day, 9,607 of them trucks (6.7%). I 93 is practically level with it at 144,064. I 93 carries the most trucks, 11,747 a day (8.2% of its traffic), although it ranks #2 for all traffic.

Trips using I 495 are long: a median of 47.8 minutes against 33.4 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Yankee Division HighwayMotorway · 144,352vehicles9,607trucks · 6.7%
Road class
Motorway
Congestion ratio
90.7%
Median trip time
42.1 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$147,204

Delays build on Yankee Division Highway: its congestion ratio of 91% over free-flow time is well above the county's 27%.

2I 93Motorway · 144,064vehicles11,747trucks · 8.2%
Road class
Motorway
Congestion ratio
85.2%
Median trip time
39.3 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$135,728

I 93 carries 15.1 times the county average on its busiest stretch, where the median trip lasts 39.3 minutes.

3Massachusetts TurnpikeMotorway · 108,680vehicles9,087trucks · 8.4%
Road class
Motorway
Congestion ratio
78.9%
Median trip time
45.7 min
Drivers’ median age
44.5 yrs
Drivers’ average income
$150,003

Drivers on Massachusetts Turnpike are on long journeys, a median 45.7 minutes against 33.4 county-wide: a through route more than a local street.

4I 495Motorway · 95,188vehicles9,763trucks · 10.3%
Road class
Motorway
Congestion ratio
72.5%
Median trip time
47.8 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$133,877

At 10.0 times the county average, I 495 draws drivers from neighborhoods averaging $133,877 in household income.

5Bennett HighwayMotorway · 88,512vehicles5,086trucks · 5.8%
Road class
Motorway
Congestion ratio
103.3%
Median trip time
39.2 min
Drivers’ median age
45.7 yrs
Drivers’ average income
$114,627

Travel on Bennett Highway's busiest stretch runs 103% over free-flow time, against 27% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 93Motorway · #2 by traffic144,064vehicles11,747trucks · 8.2%
2I 495Motorway · #4 by traffic95,188vehicles9,763trucks · 10.3%
3Yankee Division HighwayMotorway · #1 by traffic144,352vehicles9,607trucks · 6.7%
4Massachusetts TurnpikeMotorway · #3 by traffic108,680vehicles9,087trucks · 8.4%
5US 3Motorway · 86,660vehicles6,548trucks · 7.6%
Road class
Motorway
Congestion ratio
65.5%
Median trip time
38.4 min
Drivers’ median age
47.2 yrs
Drivers’ average income
$132,545

A main artery: US 3's busiest stretch carries 9.1 times the county average; trucks are 7.6% of it, above the county-wide 6.7%.

How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

MiddlesexDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near Middlesex County

The same traffic breakdown for the areas closest to Middlesex County, Massachusetts.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.