Graphics:

I-90/94, Dan Ryan Express Lanes from I-55/Stevenson Expressway to I-90 Chicago Skyway Congestion - 2009, showing average speed by milepost and time of day.  Click on graphic to open congestion scan; click again to improve graphic resolution.

I-90/94, Dan Ryan Express Lanes Congestion Scan - 2009 (click for pdf version)

2007 congestion scans are unavailable for this highway segment because of construction activity at the time.  Scans will be produced for subsequent years when data is available.

Performance Data:

2007 performance measures are unavailable for this highway segment because of construction activity at the time.  Performance measures will be produced for subsequent years when data is available.

Non-holiday Tuesdays, Wednesdays, and Thursdays:

East-bound I-90/94

 

Measure	2008	2009	2010	2011
Free-Flow Travel Time (Minutes)		3.75	4.10	4.48
Average AM Peak-Period Travel Time (Minutes)		4.21	4.51	4.72
AM Travel Time Index		1.12	1.10	1.06
Average PM Peak-Period Travel Time (Minutes)		4.52	4.95	7.24
PM Travel Time Index		1.21	1.21	1.62
AM Peak-Period 95th Percentile Travel Time (Minutes)		5.26	5.46	5.40
AM Peak-Period Planning Time Index		1.40	1.33	1.21
PM Peak-Period 95th Percentile Travel Time (Minutes)		6.36	5.72	10.05
PM Peak-Period Planning Time Index		1.70	1.40	2.24
Congested Hours		0.68	.34	7.70

 

West-bound I-90/94

 

Measure	2008	2009	2010	2011
Free-Flow Travel Time (Minutes)		3.75	4.27	4.39
Average AM Peak-Period Travel Time (Minutes)		4.77	5.38	4.97
AM Travel Time Index		1.27	1.26	1.13
Average PM Peak-Period Travel Time (Minutes)		4.13	4.73	4.74
PM Travel Time Index		1.10	1.11	1.08
AM Peak-Period 95th Percentile Travel Time (Minutes)		7.76	6.46	6.04
AM Peak-Period Planning Time Index		2.07	1.51	1.38
PM Peak-Period 95th Percentile Travel Time (Minutes)		5.26	6.16	5.82
PM Peak-Period Planning Time Index		1.40	1.44	1.33
Congested Hours		1.08	1.74	5.18