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Pennsylvania/Major roads/Main

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Major roads

PA Route shields.png

Pennsylvania follows the general road naming and road type guidelines of the USA. The Functional Classification chart shown below has been modified from the national chart to more closely reflect the roads in Pennsylvania.

Functional Classification reference chart

Use this chart to determine the road type for Pennsylvania roads based on the functional class.

First, find the functional class of the road from the PennDOT Functional Classification county maps and determine if it is a signed, numbered highway in a one of the highway systems.

Follow the column for the road's highway system down to the row for the road's functional class to find the proper road type for that particular road.

The PennDOT color coding is cross-referenced in the first column of the table for your convenience.


Highway Systems
Interstate Interstate Business, Loop, Spur US Hwy (incl. some special routes) US Hwy BUS, SPUR, LOOP State Route Shielded State Route Unshielded Locally Maintained
Examples I-80 I-94 Business US-190 US-460 Business SR-23 SR-309 SR-2006 Roberts St
F
u
n
c
t
i
o
n
a
l

C
l
a
s
s
Interstate
PA Blue.jpg
 Fw  n/a n/a n/a n/a n/a n/a
Other Freeway[a]PA Darkred.jpg n/a  Fw   Fw   Fw   Fw   Fw   Fw 
Other Expressway[a]PA Darkred.jpg n/a  Major   Major   Major   Major   Major   Major 
Other Principal ArterialPA Red.jpg n/a  Major   Major   Major   Major   Major   Major 
Minor ArterialPA Green.jpg n/a  Major   Major   Minor   Minor   PS   PS 
Urban or Rural-Major CollectorPA Purple.jpg n/a  Major   Major   Minor   Minor   PS   PS 
Rural Minor Collector

PA Yellow.jpg

n/a  Major   Major   Minor   Minor   PS [b]
 Street 
 Street 
Local Roads or
Not Classified
PA Orange.jpg
n/a  Major   Major   Minor   Minor   PS [b]
 Street 
 Street 

^a Since Pennsylvania combines these two classes, use the criteria from the USA Freeway page to determine if the road should typed as a freeway or major highway.

^b Some 4-digit State Routes are numbered for legacy or maintenance reasons, but they do not serve as primary thoroughfares for the area and should be classified as  Street .

State routes with 2 or 3 digit route numbers

In Pennsylvania all State Routes should have any common name as displayed on street signs as the primary name in WME, and the route number in the alternate name field. The city name should be the same for both the common name and route number. SR-111 is the current acceptable format. The use of State Hwy or PA-xxx and other variations should not be used unless it is on the road signs that drivers would see.

State Route naming should follow the following format:

  • SR-28 S (divided one-way segments).
  • SR-309 (undivided two-way segments).

Note: Some state routes have mixed signage, with route numbers at major intersections and road names at minor intersections. Until Waze gets state shields working completely, the best practice is to name the segments according the the signage that the motorist will see as he approaches the state route, with priority given to the major intersections.

State routes with 4 digit route numbers

State Routes with 4 digits (e.g. SR-3001) should not have the route number in the alternate field. SR-xxxx should be removed from the alt field, if you find it.

County or township roads

County (Co) and Township (T) roads need no special designation or road type. Road number info is not needed in the alternate name field.

Ramps

When naming a Ramp to a State Route, use the SR-111 format. PA-111 format should not be used unless it matches exactly what is on the big green sign directing you to the ramp. It is best to reference Google Street View in WME, where available.

Adhere to national standards for Exit ramps and Entrance ramps (on-ramps). Ramp names should use these formats:

Off-ramps:

  • Numbered exit: (Exit 16: SR-15 / Scranton)
  • Numbered exit with multiple Cities or Routes: (Exit 16: SR-15 N / SR-86 E / Wilkes / Scranton)
  • Numbered exit with multiple exits: (Exit 16A-B: SR-15 N / SR-86 E / Scranton)
  • Non-numbered exit: (to SR-15 / Scranton)