Interstate 70 in Pennsylvania

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Interstate 70 Auxiliary route of the Interstate Highway System
Length:	167.92 mi[1] (270.24 km)
West end:	I-70 at the West Virginia state line
Major junctions:	I-79 in Washington PA 43 in Fallowfield Twp I-76 in New Stanton
East end:	I-70 at the Maryland state line
Pennsylvania State Routes < PA 69 PA 70 > Minor - Legislative

Interstate 70 runs east-west across the southwest part of the U.S. state of Pennsylvania. About half of the route is concurrent with Interstate 76 along the Pennsylvania Turnpike. I-70 is one of only a few Interstate Highways to have a traffic signal - in this case, with U.S. Route 30 at Breezewood, where it leaves the Turnpike and heads south towards Maryland.^[2] The portion of I-70 between Washington, Pennsylvania and New Stanton, Pennsylvania falls well below interstate highway standards.

I-70 crosses the Monongahela River on the Belle Vernon Bridge and the Youghiogheny River on the Smithton High Level Bridge.

[edit] History

By 1947, present Interstate 70 across Pennsylvania was included in the planned Interstate Highway System. The route from West Virginia split at Washington, with one branch heading northeast to meet the Pennsylvania Turnpike near Pittsburgh and the other heading east, bypassing Pittsburgh to the south (via a planned bypass of Pennsylvania Route 71) to the New Stanton interchange. The piece south from the Breezewood interchange into Maryland was also in the network.^[3] In 1957, preliminary numbers were assigned; the longer route via Pittsburgh (now Interstate 79, Interstate 279 and Interstate 376) became the main line of I-70, while the southern bypass (now I-70) became Interstate 70S.^[4] A southern extension of Interstate 79, which had previously only run from Erie south to Pittsburgh, to Charleston, West Virginia in 1963, resulted in changes to I-70. On February 26, 1964, as part of the formation of Interstate 76 (east of downtown Pittsburgh), AASHTO approved a rerouting of I-70 along I-70S. The former I-70 became I-79 from Washington to downtown Pittsburgh and I-76 to and along the Turnpike to New Stanton.^[5] This brought the routing of I-70 to its present form.

[edit] Exit list

County	Location	Mile[6]	#	Destinations	Notes
I-70 continues into West Virginia
Washington	Donegal Twp	0.89	1	West Alexander
		5.65	6	PA 231 — Claysville
	Buffalo Twp	11.00	11	PA 221 — Taylorstown
	North Franklin Twp	14.81	15	US 40 — Chestnut Street
	Canton Twp	15.96	16	Jessop Place
	Washington	16.65	17	PA 18 - Jefferson Avenue
	South Strabane Twp	Western terminus of I-70/ I-79 concurrency
		17.51	18	I-79 north — Pittsburgh
		18.56	19A	US 19 south — Murtland Avenue south
		18.78	19B	US 19 north — Murtland Avenue north
		19.00	20	PA 136 — Beau Street
		21.02	21	I-79 south — Morgantown, West Virginia
		Eastern terminus of I-70/ I-79 concurrency
	Somerset Twp	24.50	25	PA 519 — Eighty Four/Glyde
		27.42	27	Dunningsville
		30.50	31	Kammerer
		32.54	32A	PA 917 — Ginger Hill
	Bentleyville	32.94	32B	to PA 917 south — Bentleyville
	Fallowfield Twp	35.03	35	PA 481 — Monogahela/Centerville
		36.43	36	Lover	Westbound exit and eastbound entrance.
		37.46	37A	Toll PA 43 south — California
		37.69	37B	Toll PA 43 north — Pittsburgh
	Speers	39.74	39	Speers
		40.19	40	PA 88 — Charleroi/Allenport
Westmoreland	Rostraver Twp	40.72	41	PA 906 — Belle Vernon/Monessen
	North Belle Vernon	41.46	42	North Belle Vernon
	Rostraver Twp	42.13	42A	Monessen	Westbound exit and eastbound entrance
		42.64	43	PA 201 to PA 837 — Donora/Fayette City	Split into exits 43A and 43B westbound.
		44.10	44	Arnold City
		46.36	46A	PA 51 south — Uniontown
		46.60	46	PA 51 north — Pittsburgh
	South Huntingdon Twp	48.85	49	Smithton
		51.13	51A	PA 31 east — Mt. Pleasant
		51.34	51B	PA 31 west — West Newton
		53.19	53	Yukon
	Sewickley Twp	53.82	54	Madison
	New Stanton	56.87	57	Hunker/New Stanton	Westbound only. Split into exits 57A and 57B.
		56.95		New Stanton	Eastbound only.
		57.32	58	to US 119/Toll PA 66 — Delmont/Greensburg/Connellsville	I-70 eastbound merges with Toll I-76 — Pittsburgh/ Harrisburg
Concurrent with I-76 for 86 miles between exits 75 and 161 of the Pennsylvania Turnpike
Bedford	East Providence Twp	147.05	147	US 30 east — Breezewood	I-70 is at-grade with US 30. The roads meet at one of the Interstate Highway System's few traffic signals I-70 westbound merges with Toll I-76 — Pittsburgh/ Harrisburg
Fulton	South Breezewood	148.68	149	to US 30 west — Everett
	Brush Creek Twp	151.16	151	PA 915 — Crystal Spring
		155.75	156	PA 643 — Town Hill
	Union Twp	163.21	163	PA 731 south — Amaranth
	Bethel Twp	Western terminus of I-70/ US 522 concurrency
		167.93	168	US 522 north — Warfordsburg
I-70 and US 522 continue into Maryland

[edit] References

Interstate 70
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