Travel Time Analysis

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2007 Travel Time - Bellevue to Tukwilla Morning Commute

Current Traffic Conditions:
Tukwilla to Bellevue  Current Seattle Area Travel Times 
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95% Reliable Travel Times 
Puget Sound Traffic Flow Map 
Live Traffic Cameras 

 Congestion Relief Projects Underway Congestion Relief Projects Completed 
  • I-405 NE 44th to 112th Ave SE Widening
  • I-405 I-5 to SR 169 Stage 1 Widening
  • I-405 I-5 to SR 169 Stage 2 Widening
  • I-405 South Bellevue Widening
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  •  I-405 Access Downtown Project Map

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    Historic Traffic Conditions:
    Percentage of days when severe congestion occured
    Percentage of days when severe congestion occured
    The graph above displays an extended-daytime view of the percentage of days on this particular route when traffic speeds fell below 35 MPH for the daytime period (5 AM to 8 PM).The darker line shows the trend for 2006, the lighter line shows the trend for 2004. 
    The graph above displays the percentage of througphut capacity lost in a specific location on this commute. The lost throughput capacity is based on the individual calculation of the maximum number of vehicles per lane, per hour that can travel through at this point (indicated in paraenthesis below the graph title).The darker line shows the trend for 2006, the lighter line shows the trend for 2004.
    The location above has a traffic camera with a live image available online.

     Travel Time Analysis (Comparing 2004 to 2006) Bellevue to Tukwilla AM  Tukwilla to Bellevue PM
    Route I-405 I-405
    Peak time 7:40 AM 5:15 PM
    Length (in miles) 13.5 13.5
    Travel time at peak efficiency (in minutes) 16 16
    Travel time at posted speeds (in minutes) 13 13
    Average Peak Travel Time (Based on Peak Time) 2004 21 21
    Average Peak Travel Time (Based on Peak Time) 2006 22 20
    Change (∆) 5% -5%
    95% Reliable Travel Time 2004 28 27
    95% Reliable Travel Time 2006 32 27
    Change (∆) % 14% 0%
    Ratio of Peak Travel Time to Maximum Throughput Travel Time (MT³I) 2004 1.33 1.33
    Ratio of Peak Travel Time to Maximum Throughput Travel Time (MT³I) 2006  1.39 1.26
    Traffic Volume Peak Period -2% -1%
    Duration of Congestion 2004 (in hours: minutes) 0:20 0:30
    Duration of Congestion 2006 (in hours: minutes) 0:40 0:35
    Change (∆) (in minutes) 0:20 0:05

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