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Old 07-01-2023, 05:41 PM
 
Location: South St Louis
4,356 posts, read 4,519,185 times
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Missouri’s Governor Parson just announced that funding was approved to widen I-70 across all of Missouri to three lanes in each direction. (The highway already exceeds 3 lanes within the two major urban areas.) This plan is meant to help alleviate high traffic volume on I-70 as it traverses rural expanses. This got me wondering: Is it common for an interstate highway to contain 3 or more lanes in each direction as it crosses the entirety of a state? I can see where it might be ordinary in small eastern states like Connecticut, New Jersey, or Maryland. I’m thinking more of bigger states. I can’t imagine three-lanes in each direction across larger states. Is Missouri is unusual due to STL and KC flanking each side?
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Old 07-01-2023, 06:05 PM
 
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I do believe that Interstate 75 is at least 6 lanes (total) for the entire length of Georgia. Same for I-95 in Florida.
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Old 07-01-2023, 07:05 PM
 
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I-71 in Ohio is at least three lanes from Cleveland to Columbus (roughly 125 miles). I'm pretty sure they are talking about making the entire stretch between Columbus and Cincinnati (100 miles) also three lanes.

I'm pretty sure that will get done before commuter rail between the three is up, and 99.9 percent sure it will get done before either Columbus or Cincinnati get anything more than what they have in terms of local "train" transit between those two (which is a couple mile street car route in Cincy).
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Old 07-01-2023, 09:11 PM
 
Location: 32°19'03.7"N 106°43'55.9"W
9,331 posts, read 20,668,041 times
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Interesting graphic:

https://metrocosm.com/us-highway-map.html

https://metrocosm.com/traffic-flow-maps/

In personal experience driving, I find I-44, from Oklahoma City to St. Louis, much of the drive in rural areas, to be one of the most draining. Many trucks on this route, with terrain on it. It's one of the few interstates I can think of that doesn't run directly north-south or east-west, but rather, northeast to southwest and between two out of the four major cross country interstates (I-40 to I-70). Many stretches of 44 in rural Missouri are two lanes. The road should be 3 lanes throughout, minimum.
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Old 07-01-2023, 09:14 PM
 
Location: Florida and the Rockies
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I-95 in Florida is two lanes in each direction for a significant distance, from Stuart north to somewhere near Daytona.

But I think there are some other states with three lanes in each direction. I-40 in Tennessee? I-65 in Indiana?
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Old 07-01-2023, 09:15 PM
 
Location: Born + raised SF Bay; Tyler, TX now WNY
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I20 east of Dallas is incredibly busy for as many miles of inter urban stretches it spans. I30 is also really busy for being largely out in the sticks.

Those are really the only two which stick out to me.
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Old 07-01-2023, 09:28 PM
 
Location: San Diego, CA
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I-83 going from York going into Baltimore can be a legit parking lot during holidays
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Old 07-01-2023, 11:24 PM
 
1,148 posts, read 739,235 times
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Quote:
Originally Posted by 1greatcity View Post
Missouri’s Governor Parson just announced that funding was approved to widen I-70 across all of Missouri to three lanes in each direction. (The highway already exceeds 3 lanes within the two major urban areas.) This plan is meant to help alleviate high traffic volume on I-70 as it traverses rural expanses. This got me wondering: Is it common for an interstate highway to contain 3 or more lanes in each direction as it crosses the entirety of a state? I can see where it might be ordinary in small eastern states like Connecticut, New Jersey, or Maryland. I’m thinking more of bigger states. I can’t imagine three-lanes in each direction across larger states. Is Missouri is unusual due to STL and KC flanking each side?
For Maryland the only interstate that is consistently 3 lanes or more each direction is I-95, which make sense since the only somewhat rural area that road passed through is the 20 miles or so stretch from Aberdeen area to Elkton. I-70 has a 30mi or so section from western edge of Ellicott City to Frederick that pass through largely rural area that is 6 lanes total, but it is 4 lanes total for the most part west of Frederick.

Quote:
Originally Posted by westender View Post
I-95 in Florida is two lanes in each direction for a significant distance, from Stuart north to somewhere near Daytona.

But I think there are some other states with three lanes in each direction. I-40 in Tennessee? I-65 in Indiana?
I-65 (and I-70) for the most part is 2 lanes each direction in Indiana. I have drove the entire route a few times back when I live in Indiana.
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Old 07-02-2023, 12:07 AM
 
Location: West Seattle
6,322 posts, read 4,846,657 times
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I-90 in Washington is 3 lanes through a long stretch of the Cascades. There are a lot of accidents and sudden blizzards out there in the winter, which I assume is the reason.

https://goo.gl/maps/4nTkZP5bvAWQsFQn8
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Old 07-02-2023, 12:45 AM
 
Location: Louisiana to Houston to Denver to NOVA
16,505 posts, read 26,092,111 times
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Quote:
Originally Posted by TheTimidBlueBars View Post
I-90 in Washington is 3 lanes through a long stretch of the Cascades. There are a lot of accidents and sudden blizzards out there in the winter, which I assume is the reason.

https://goo.gl/maps/4nTkZP5bvAWQsFQn8
Same with I-70 in Colorado. I-70
https://maps.app.goo.gl/iVuWXC5AZFFLz7Av5
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