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Traffic heat map of Bremer County, Iowa: 302 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Avenue of the Saints

Bremer County, Iowa Traffic Counts

How busy are the roads of Bremer County, Iowa? We measure 302 road miles, divided into 3,186 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, Avenue of the Saints, carries 17,004 vehicles a day, 8.9 times the average road. 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 Bremer County, Iowa

Traffic

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

vehicles per day1,908
Trucks

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

9.5%
Average travel time

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

30.9 min
Congestion ratio

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

7.8%
Drivers’ average age

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

46.7 yrs
Drivers’ average income

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

$80,612

Our data shows 1,908 vehicles per day on the average road in Bremer County, Iowa, and 703,343 vehicle-miles traveled per day (≈257 million per year) across its 302 miles of monitored roads. About 1 in 10 vehicles is a truck, in line with Iowa (11.0%).

Shorter trips than 88% of counties in Iowa

Bremer sees 37% lower average daily traffic volume than the state average (1,908 vehicles per day against 3,042), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. In total volume terms, its road network carries about 0.8% of Iowa's statewide total of vehicle-miles. 61% of counties in Iowa see less traffic than Bremer's 1,908 vehicles per day.

At 30.9 minutes, the average travel time is 7% lower than the state level. 88% of counties in Iowa have a longer average travel time than Bremer's 30.9 minutes.

At 32% lower than the state level, the 7.8% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Bremer County, Iowa

Trafficvehicles per day4,663
Trucks12.0%
Average travel time45.6 min
Congestion ratio9.1%
Drivers’ average age47.3 yrs
Drivers’ average income$78,837

A little more than half of the driving in Bremer County, Iowa happens on highways: 55% of all vehicle-miles. The average highway carries 4,663 vehicles per day, 178% more than the average non-highway road in the same area, which carries 1,680 vehicles per day.

With 27% of the road miles (83 miles in 244 segments), highways punch above their length, carrying 388,065 vehicle-miles traveled per day (≈142 million per year).

By highway travel volume, Bremer outranks 62% of counties in Iowa.

Lower highway truck share than 81% of counties in Iowa

The concentration of trucks on highways (12.0%) is 25% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Bremer's highway truck share (12.0%) is lower than 81% of counties in Iowa. Bremer's highway truck count is lower than 68% of counties in Iowa, at roughly 561 trucks per day.

non-highway traffic icon

Non-highway Traffic in Bremer County, Iowa

Trafficvehicles per day1,680
Trucks6.5%
Average travel time29.6 min
Congestion ratio7.7%
Drivers’ average age46.1 yrs
Drivers’ average income$81,684

Local roads carry a significant share of travel in Bremer County, Iowa: 45% of all vehicle-miles. The average non-highway road carries 1,680 vehicles per day.

Local roads make up 73% of the monitored road miles (220 miles in 2,942 segments) but carry less than their share of travel: 315,277 vehicle-miles traveled per day (≈115 million per year). About 1 in 16 vehicles on non-highway roads is a truck (6.5%).

Younger drivers than 83% of counties in Iowa

Non-highway roads carry a truck concentration that's 46% lower than the highway network.

The non-highway congestion ratio of 7.7% is 31% lower than the state level, suggesting more efficient local mobility than the state average.

81% of counties in Iowa see lower average driver income among trip origins than Bremer. Bremer's median driver age is lower than 83% of counties in Iowa.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Bremer County, Iowa, the peak hour concentrates about 8% of the day's traffic.

Bremer County vs. Iowa Traffic Comparison

The average daily traffic per road sets Bremer County apart: 37% below the Iowa average. Its highway truck share is also 25% below.

MetricBremer CountyIowa averageDifference
Traffic1,9083,042-37.3%
Truck % (Total Traffic)9.5%11.0%-13.4%
Truck % (Highway)12.0%16.1%-25.3%
Avg. Travel Time30.9 min33.0 min-6.5%

How Bremer County compares

Bremer County against nearby counties

Nothing in this table sets Bremer County sharply apart from the 4 areas nearest to it, though it has the second busiest roads of the five.

Bremer County and the 4 nearest county-level areas by centroid distance, with the Iowa average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Bremer County1,9089.5%703,34330.9 min7.8%
Chickasaw County, Iowa1,57911.2%355,06434.9 min6.0%
Black Hawk County, Iowa3,5619.1%2,621,51633.8 min10.6%
Butler County, Iowa1,0268.8%257,44932.8 min5.1%
Fayette County, Iowa1,2039.1%346,06632.5 min5.6%
Iowa average3,04211.0%N/A33.0 min11.4%

Bremer County ranked within Iowa

Average travel time places Bremer County #87 of 99 in Iowa - the bottom quarter of the state.

Bremer County ranked among 99 county-level areas in Iowa (1 = highest); measures without data in every county rank a smaller field, down to 70.
MeasureBremer CountyIowa rank
Traffic volume (AADT)1,908#39 of 99
Highway vehicle-miles per day388,065#27 of 70
Truck share on highways12.0%#57 of 70
Highway trucks per day561#48 of 70
Average travel time30.9 min#87 of 99
Average driver income$80,612#20 of 99
Average driver age46.7 yrs#82 of 99

Bremer County ranks #20 of 99 on average driver income but #87 of 99 on average travel time - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Bremer County, Iowa

The three busiest roads in Bremer County average 13,913 vehicles a day, 7.3 times the county average of 1,908 across all its monitored roads.

Avenue of the Saints leads with 17,004 vehicles a day, 1,570 of them trucks (9.2%). It also carries the most trucks.

Trips using Larrabee Avenue are long: a median of 44.6 minutes against 30.9 county-wide, the mark of a through route.

Few trucks use 4th Street Southwest: 4.7% of its traffic, under half the county's 9.5%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Avenue of the SaintsTrunk road · 17,004vehicles1,570trucks · 9.2%
Road class
Trunk road
Congestion ratio
19.5%
Median trip time
38.6 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$82,439

At 8.9 times the county average, Avenue of the Saints draws drivers from neighborhoods averaging $82,439 in household income.

24th Street SouthwestPrimary road · 13,063vehicles608trucks · 4.7%
Road class
Primary road
Congestion ratio
32.2%
Median trip time
28.9 min
Drivers’ median age
44.4 yrs
Drivers’ average income
$79,950

Delays build on 4th Street Southwest: its congestion ratio of 32% over free-flow time is well above the county's 8%.

34th Avenue SouthwestPrimary road · 11,671vehicles582trucks · 5.0%
Road class
Primary road
Congestion ratio
27.8%
Median trip time
28.8 min
Drivers’ median age
42.4 yrs
Drivers’ average income
$82,599

Travel on 4th Avenue Southwest's busiest stretch runs 28% over free-flow time, against 8% across the county, so expect slower peak hours.

4Bremer AvenuePrimary road · 7,631vehicles398trucks · 5.2%
Road class
Primary road
Congestion ratio
23.7%
Median trip time
29.4 min
Drivers’ median age
46.7 yrs
Drivers’ average income
$77,598

On its busiest stretch, Bremer Avenue carries 4.0 times the county average; trucks are 5.2% of it, below the county-wide 9.5%.

5230th StreetPrimary road · 6,414vehicles409trucks · 6.4%
Road class
Primary road
Congestion ratio
14.5%
Median trip time
34.3 min
Drivers’ median age
46.7 yrs
Drivers’ average income
$78,140

230th Street peaks at 6,414 vehicles a day, 3.4 times the county average; trucks are 6.4% of it, below the county-wide 9.5%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Avenue of the SaintsTrunk road · #1 by traffic17,004vehicles1,570trucks · 9.2%
2Larrabee AvenueTrunk road · 6,266vehicles615trucks · 9.8%
Road class
Trunk road
Congestion ratio
5.8%
Median trip time
44.6 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$80,100

Larrabee Avenue carries 3.3 times the county average at its busiest, 615 of them trucks (9.8%, in line with the county-wide 9.5%).

34th Street SouthwestPrimary road · #2 by traffic13,063vehicles608trucks · 4.7%
44th Avenue SouthwestPrimary road · #3 by traffic11,671vehicles582trucks · 5.0%
5230th StreetPrimary road · #5 by traffic6,414vehicles409trucks · 6.4%
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

BremerDepartment 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 Bremer County

The same traffic breakdown for the areas closest to Bremer County, Iowa.

Need segment-level traffic data?

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