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Pennsylvania State Routes (including US and Interstate Routes)

An in-depth look at Pennsylvania's state highways, crossings, multiplexes, and numbering systems

Current Routes · A quick index to junction lists, multiplexes, and location of current routes:

Current Routes:	1–99	100–199	200–299	300–399	400–499
	500–599	600–699	700–799	800–899	900–999

Missing Pennsylvania State Routes

The Pennsylvania State Route Numbering System

Historic and Current Routes Since 1928 · Routes 1-799 are grouped by families (e.g., see 46 for routes 46, 146, 246, ..., 746), while Routes 800-999 are arranged in sequential order (i.e., 800, 801, 802, ..., 999):

Families:	00–09	10–19	20–29	30–39	40–49
	50–59	60–69	70–79	80–89	90–99

Spur Routes:	800–849	850–899	900–949	950–999

Junction Lists · Intersection, interchange, multiplex, and web link listings for currently signed routes:

Junction Lists:	1-10	11-20	21-30	31-40	41-50
	51-60	61-70	71-80	81-90	91-100
	101-110	111-120	121-130	131-140	141-150
	151-160	161-170	171-180	181-190	191-200
	201-210	211-220	221-230	231-240	241-250
	251-260	261-270	271-280	281-290	291-300
	301-310	311-320	321-330	331-340	341-350
	351-360	361-370	371-380	381-390	391-400
	401-410	411-420	421-430	431-440	441-450
	451-460	461-470	471-480	481-490	491-500
	501-510	511-520	521-530	531-540	541-550
	551-560	561-570	571-580	581-590	591-600
	601-610	611-620	621-630	631-640	641-650
	651-660	661-670	671-680	681-690	691-700
	701-710	711-720	721-730	731-740	741-750
	751-760	761-770	771-780	781-790	791-800
	801-810	811-820	821-830	831-840	841-850
	851-860	861-870	871-880	881-890	891-900
	901-910	911-920	921-930	931-940	941-950
	951-960	961-970	971-980	981-990	991-999

Route Types · Miscellaneous classifications of routes:

Types:	Interstate	United States	Bannered/ Duplicated	4-Digit SR Routes
	Numbering Violators	Numbering Non-Violators	Never Assigned	Border- Crossers

 

Old PA Routes Index

 

Bannered, suffixed, duplicated, and secret routes:

Sources and Links

Road Maps

• 1927 Cram's Official Paved Road Map of East Central States. From Harold Cramer's Maps of PA web site.
• 1927-28 Clason Touring Map of Ohio and Pennsylvania. From Harold Cramer's Maps of PA web site.
• 1929 Pennsylvania Road Map from Pennsylvania Highways, a travel magazine published by the Pennsylvania Department of Highways. From Bruce Harper's Roads of Virginia, Pennsylvania, and Pittsburgh web site.
• 1963 Allegheny County Map from a 1963 Gulf Pittsburgh Tour Guide. From Adam Prince's Southwest Pennsylvania Roads Project.
• Various Esso Road Maps of Pennsylvania: 1940, 1951, 1953, 1955, 1959, 1960, 1969
• Various Shell Road Maps of Pennsylvania: 1938
• Various Sunoco Road Maps of Pennsylvania: ~1934, 1937, 1949, 1969-70
• Various PennDOT Official Transportation Maps: 1934, 1941, 1976, 1987, 1993, 2000, 2002.
• PennDOT County Type 10 Maps: 1999, 2000, 2001, 2002, 2003.
• Ohio Department of Transportation Online Archive of Maps, 1912-2001.
• Various current and historic topographical maps available at the TerraServer and MapTech.

Web Sites

• Pennsylvania Highways by Jeff Kitsko. In particular, the Interstate Highways, Decommissioned Interstate Highways, US Highways, and Decommissioned US Highways sections were very useful.
• The 'Logic' of the Commonwealth Route System by Gene Yao, Steve Walter, and Adam Prince; part of Adam Prince's Southwest Pennsylvania Roads Project.
• Penn-York Roads by Kevin Olmstead.
• Meadville Area Highways by David Brunot.
• Highway History articles. From the Federal Highway Administration web site. In particular, The William Penn Highway discusses details of the 1920s numbering.
• North American Auto Trials, by Dave Schul.

Individuals

• David Brunot
• Douglas Kerr
• Jeff Kitsko
• Adam Prince