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Author Topic: Pennsylvania exit letters  (Read 1197 times)

Poiponen13

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Pennsylvania exit letters
« on: September 23, 2023, 09:20:15 AM »

I found some uses of exit letters in Pennsylvania on US 422 when browsing OpenStreetMap. They are in Kittanning and Indiana. What is their purpose?
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Hunty2022

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Re: Pennsylvania exit letters
« Reply #1 on: September 23, 2023, 09:49:59 AM »

A = Southbound
B = Northbound

It’s like any other multi-exit A-B system, just without the numbers.

That’s my guess.
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Mr_Northside

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Re: Pennsylvania exit letters
« Reply #2 on: September 23, 2023, 01:12:09 PM »

They're basically used on segments of freeway that don't use exit numbers (so most, but not all, non interstate freeways), but where there is a single "interchange", but with multiple exit ramps for it (like a cloverleaf, or however you'd term the interchange complex with 422 & 66 between Kittanning & Ford City)
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Alps

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Re: Pennsylvania exit letters
« Reply #3 on: September 23, 2023, 09:26:11 PM »

These are also exiting State College to the north.

rickmastfan67

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Re: Pennsylvania exit letters
« Reply #4 on: September 24, 2023, 04:41:09 AM »

They're basically used on segments of freeway that don't use exit numbers (so most, but not all, non interstate freeways), but where there is a single "interchange", but with multiple exit ramps for it (like a cloverleaf,

They are also present on US-40 @ PA-Turnpike 43.

or however you'd term the interchange complex with 422 & 66 between Kittanning & Ford City)

It's called a cluster fuck. LOL!  Just add the missing ramp to trumpet part on the road into Kittanning, and remove that super long bridge ramp from EB US-422/NB PA-28 -> SB PA-66, and you'll have way less maintenance costs there.

 


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