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I-290 Eisenhower Extension (I-90/Jane Addams Tollway to I-294) Congestion and Crash Scans

The Chicago region traffic congestion scans were created by averaging five minute speed data obtained from freeway loop detectors and mobile technology data. The traffic scans display average speed on a freeway corridor as a function of time of day (the x-axis) and location (the y-axis) along a freeway corridor.

Crash scans show the rate of total highway crashes per 100 million vehicle-miles traveled (VMT) for 1/10 mile segments.  The purpose of these crash scans is to show highway planners and system managers how crashes are related to congestion.  Understanding where crashes are concentrated can help planners and engineers focus on improving those locations with the worst performance.  

Congestion Scans

I-290 Eisenhower Extension, I-90/Jane Addams Tollway to I-294, Congestion Scan, 2009. Showing average speed by milepost by time of day.

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I-290 Eisenhower Extension, I-90/Jane Addams Tollway to I-294, Congestion Scan, 2007.Showing average speed by milepost by time of day.

Download hi-res PDF 

Crash Scan

I-290 Eisenhower Extension, I-90/Jane Addams Tollway to I-294 Crash Scan. 2008-12. Showing number of crash rates per 100 million vehicle miles traveled.

Performance Data

Non-holiday Tuesdays, Wednesdays, and Thursdays:

East-bound I-290 Extension

Measure 2007 2008 2009
Free-Flow Travel Time
(Minutes)
15.63 15.75 15.55
Average AM Peak-Period
Travel Time (Minutes)
20.91 19.74 19.65
AM Travel Time Index 1.34 1.25 1.26
Average PM Peak-Period
Travel Time (Minutes
28.64 27.58 26.56
PM Travel Time Index

1.83

1.75

1.71

AM Peak-Period
95th Percentile Travel Time

29.50

24.90

29.52

AM Peak-Perid
Planning Time Index

1.89

1.58

1.90

PM Peak-Period
95th Percentile Travel Time

48.74

49.98

47.31

PM Peak-Period
Planning Time Index

3.12

3.11

3.04

Congested Hours

8.06

9.29

5.72

West-bound I-290 Extension

Measure

2007

2008

2009

Free-Flow Travel Time
(Minutes)

15.57

15.68

15.52

Average AM Peak-Period
Travel Time (Minutes)

20.42

19.29

18.47

AM Travel Time Index

1.31

1.23

1.19

Average PM Peak-Period
Travel Time (Minutes

21.31

22.96

21.18

PM Travel Time Index

1.37

1.46

1.36

AM Peak-Period
95th Percentile Travel Time

25.78

23.66

23.41

AM Peak-Perid
Planning Time Index

1.66

1.51

1.51

PM Peak-Period
95th Percentile Travel Time

31.01

37.83

32.65

PM Peak-Period
Planning Time Index

1.99

2.41

2.10

Congested Hours

9.98

9.74

5.98

 

About the Data

Data provided by IDOT, Illinois Tollway, and Traffic.com. 

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