Chart of the Day – Percentage of Miles of Twin City Urban Freeway System Congestion

Percentage of Miles of Twin City Urban Freeway System Congestion. Source: Metropolitan Freeway System 2012 Congestion Report

Percentage of Miles of Twin City Urban Freeway System Congestion. Source: Metropolitan Freeway System 2012 Congestion Report

This graph shows the percentage of congested directional miles on the MnDOT managed freeway system for the Twin Cities metro area, from the Metropolitan Freeway System 2012 Congestion Report. The trend lines show the difficulties with extrapolation, as choosing different bases will produce widely different trends. The 10 year trend is essentially flat, projecting a 2030 value the same as today, while the five year trend (which starts at the nadir of the recession) projects huge increases.

8 thoughts on “Chart of the Day – Percentage of Miles of Twin City Urban Freeway System Congestion

  1. Bill LindekeBill LindekeModerator  

    this chart is pretty interesting.

    1) ramp meters had a bigger impact on our freeways than 35W
    2) which trend is the most important: long term, 10 yr, 5 yr, or 3 yr?
    3) how does this number affect average commute time in the TC (if at all)?

  2. Alex

    Again I think it’s interesting to compare this to recent infographics about the transit system, in this case Metro Transit’s 2013 “fact” book. Metro Transit considers their on-time performance to be fairly insignificant, occupying less space, for example, than their lost-and-found. MnDot, in the meantime, produces entire reports on how congested their system is, presumably in the hopes of drumming up funds to mitigate that congestion. I’m not sure the differing approaches entirely explains why MnDot gets 50x as much state funding as Metro Transit, but it may be a part of the explanation.

    1. Bill LindekeBill

      It’s bc roads have a dedicated funding source, while transit has to sing for its supper.

  3. Jonathan

    Bill- Of course ramp meters had a bigger impact- it had effect system-wide on every congested freeway segment, and not just in one location and corridor. And no temporary lanes were built on parallel freeways to compensate for the ramp meter shutdown.

    1. Bill LindekeBill LindekeModerator  

      It just makes me think that so much more could be done about the demand side of freeway congestion, instead of fixating on the supply…

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