Where are the Traffic Choke Points that Cause Congestion?

We are told that the I-5 bridge is the choke point. See for yourself where the choke points are. Go to maps.google.com and enter Delta Park 97217. Click on the button near the top of the map that says Traffic. An info box will come up that shows the day of the week and current time. Click “change” and select “Traffic at day and time”. You can select any day and see the average traffic for any time of day by sliding the Time Slider. Most of each day shows green.

Southbound…

Select the morning rush hour (around 7:45 am) for various days of the week. Notice that the southbound choke point (where the traffic turns red) is south of the bridge at Delta Park and traffic backs up onto the bridge. Is the problem not enough southbound lanes on the I-5 bridge? Would building a new bridge fix that? You decide.

Northbound…

Select the afternoon rush hour (around 4:30 pm) for various days of the week. Notice that the northbound traffic (where the traffic turns red) is south of Hayden Island and starts speeding up as it crosses the bridge. Is the problem not enough northbound lanes on the I-5 bridge? Should we build a $4 billion bridge to fix that? It may help the northbound traffic some. But doesn’t the problem remain primarily south of the bridge? You decide.

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