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2007 Travel Time - Bellevue to Seattle via SR 520 Morning Commute

Current Traffic Conditions:
  Current Seattle Area Travel Times 
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95% Reliable Travel Times 
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Live Traffic Cameras 

 Congestion Relief Projects Underway Congestion Relief Projects Completed 
  • I-405 Northbound NE 8th Street to SR 520 Braided Crossing
  • SR 520 Bridge Replacement and HOV Project
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  • I-405 Access Downtown Project Map 

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    Historic Traffic Conditions:
    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 Seattle AM  Seattle to Bellevue PM
    Route I/405/SR 520/I-5 I/405/SR 520/I-5
    Peak time 7:55 AM 5:35 PM
    Length (in miles) 10.5 10.1
    Travel time at peak efficiency (in minutes) 12 12
    Travel time at posted speeds (in minutes) 10 10
    Average Peak Travel Time (Based on Peak Time) 2004 19 19
    Average Peak Travel Time (Based on Peak Time) 2006 18 21
    Change (∆) -5% 11%
    95% Reliable Travel Time 2004 26 30
    95% Reliable Travel Time 2006 26 32
    Change (∆) % 0% 7%
    Ratio of Peak Travel Time to Maximum Throughput Travel Time (MT³I) 2004 1.54 1.60
    Ratio of Peak Travel Time to Maximum Throughput Travel Time (MT³I) 2006  1.46 1.77
    Change (∆)% 0% 0%
    Duration of Congestion 2004 (in hours: minutes) 1:45 2:30
    Duration of Congestion 2006 (in hours: minutes) 1:20 2:45
    Change(∆) -0:25 0:15

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