# Pennsylvania Route 8

Pennsylvania Route 8 (PA 8) is a major 148.6-mile-long (239.1 km) state route in western Pennsylvania. Officially, PA 8 is named the William Flinn Highway.
Its southern terminus is at Interstate 376 (I-376)/U.S. Route 22 (US 22)/US 30 in Pittsburgh. Its northern terminus is US 20 in Erie.

## Route description
### Pittsburgh to Interstate 80

The southern terminus of PA 8 is at an interchange with I-376/US 22/US 30 east of downtown Pittsburgh. The route, running along Ardmore Boulevard, Penn Avenue and Washington Boulevard, heads west from I-376 and runs through the eastern districts of the city. PA 8 has intersections with Pennsylvania Route 380 and Pennsylvania Route 130 prior to crossing the Allegheny River and exiting Pittsburgh.
North of the bridge that crosses the Allegheny River, PA 8 meets Pennsylvania Route 28 at an interchange. 8 miles (13 km) north of Pittsburgh, PA 8 intersects Interstate 76 and the Pennsylvania Turnpike at exit 39. In Middlesex Township, PA 8 runs concurrent with Pennsylvania Route 228 for 2 miles (3 km). In Butler, PA 8 crosses Connoquenessing Creek on the General Richard Butler Bridge then runs with Pennsylvania Route 356 through downtown on South Main Street.
North of the city of Butler, PA 8 meets U.S. Route 422 at an interchange. Near Moraine State Park, PA 8 meets Pennsylvania Route 528 and Pennsylvania Route 173. About 3 miles (4.8 km) east of Slippery Rock, PA 8 meets Pennsylvania Route 108. In the town of Harrisville, PA 8 intersects Pennsylvania Route 58 (Grove City Harrisville Road). A few miles north of the Butler-Venango county line, PA 8 meets Interstate 80 at exit 29 near Barkeyville.

#### Mae West Bend

About 0.5 miles (0.8 km) north of the interchange of PA 28 (in the borough of Etna) is a very sharp and hazardous curve, known to Pittsburghers as "Mae West Bend". The site of numerous accidents over the years, this curve has recently been widened by razing the deteriorating buildings along the inner edge of the curve and digging out the mountainside so that two lanes ran in each direction throughout the curve (southbound travelers previously had to merge left on the curve as the right lane ended).

### Interstate 80 to Erie

2 miles (3 km) north of I-80, PA 8 becomes a limited-access highway. The expressway, built between 1973-1976, is 9 miles (14 km) long and has only two exits, one of which serves as the northern terminus of Pennsylvania Route 308. North of the expressway, PA 8 is called Pittsburgh Road. South of Franklin, PA 8 merges with U.S. Route 62, beginning a 10-mile (16 km) concurrency with the route. In Franklin, PA 8 and US 62 meet U.S. Route 322 in the city center. The routes form a short, 0.5 miles (0.8 km) concurrency through the city before splitting near the Allegheny River. North of US 322, PA 8 and US 62 begin to parallel the Allegheny River. West of downtown Oil City, the concurrency with US 62 ends. US 62 crosses the Allegheny and runs south of the city before turning north towards the Allegheny National Forest and New York. PA 8, however, continues into Oil City, where PA 8 meets Pennsylvania Route 8 Business, the first of two auxiliary routes of PA 8, at Center Street. While PA 8 Business heads into Oil City, PA 8 runs west of the city along the former routing of Pennsylvania Route 8 Bypass, rejoining PA 8 Business at North Seneca Street north of town.
North of Oil City, PA 8 is named Oil City-Titusville Road. In the city of Titusville, PA 8 meets Pennsylvania Route 27 and the southern terminus of Pennsylvania Route 89 at the intersection of Franklin Street and Central Avenue. PA 8 forms a concurrency with PA 27 westward along the one-way streets of Central Avenue and Diamond Street before splitting at Spring Street.
In Riceville, PA 8 intersects Pennsylvania Route 77. 5 miles (8 km) north of PA 77, PA 8 enters Erie County. In Union City, PA 8 merges with U.S. Route 6 for 0.5 miles (0.8 km) through downtown. Just north of the split with US 6, PA 8 meets the southern terminus of the northern segment of Pennsylvania Route 97. PA 8 passes by a dry lake called Union City Lake south of Wattsburg, where it merges with Pennsylvania Route 89. The two routes run concurrent to one another through Wattsburg, where PA 8 and PA 89 meet the western terminus of Pennsylvania Route 474, to the Venango Township community of Lowville, where PA 8 breaks from PA 89, taking a more westerly routing than PA 89. PA 8 is named Wattsburg Road between Lowville and the Erie city line.
1.5 miles (2.4 km) southeast of Erie, PA 8 interchanges with Interstate 90 at exit 29, which shows a sign for Parade Street (northbound) and Hammett (southbound).
In the city itself, PA 8, as Pine Avenue, meets the northern terminus of Old French Road (PA 97) a mere 700 feet (210 m) south of its northern terminus at U.S. Route 20. PA 97 and PA 8 effectively join to become Parade Street, which continues north to Front Street, just south of the Bayfront Parkway.

## History

PA 8 was first signed in 1926 from West Virginia to Erie. South of Pittsburgh, PA 8 followed the current U.S. Route 19 alignment from the West Virginia state line to Canonsburg, as well as the present Pennsylvania Route 50 alignment from Bridgeville to Crafton. The West Virginia – Pittsburgh segment was decommissioned in 1930.
In 1934, construction began on PA 8 between the Allegheny–Butler county line and Three Degree Road. This segment opened in 1935. Later, in 1958, construction commenced on the segment from Grant Avenue to Pennsylvania Route 28 in Etna. In that same year, the route was widened and a median was installed from Franklin to Reno. The Grant Avenue – PA 28 segment was completed the following year. In 1961, PA 8 from the end of the Richard C. Frame Memorial Highway at Interstate 80 to Franklin was upgraded with a median, and, in 1968, the section from Reno to Oil City had a median installed as well.
In 1973, construction began on the section of expressway from Pennsylvania Route 308 in Pearl to the northern end of the present expressway south of Franklin in Venango County. That same year, the southern terminus of PA 8 was moved from West Carson Street in Pittsburgh to Pennsylvania Route 28 in Etna. In 1974, construction began on the remainder of the expressway from the present southern end at Wesley to PA 308. The highway was completed in 1976.
In 1977, the southern terminus was moved to its current location from PA 28 in Etna. In 1979, the route was realigned onto what was then PA 8 Bypass (Main Street) to bypass downtown Oil City. PA 8 Bypass, initially signed in 1941, was decommissioned while the former routing in PA 8 in Oil City became Pennsylvania Route 8 Business.

## Major intersections

| County | Location | mi | km | Destinations | Notes |
| Allegheny | Wilkinsburg | 0.000 | 0.000 | I-376 / US 22 / US 30 west (Penn-Lincoln Parkway) – Pittsburgh, Monroeville US 30 east (Ardmore Boulevard) | Exit 78B on I-376, southern terminus of PA 8 |
| Allegheny | Pittsburgh | 2.462 | 3.962 | PA 380 east (Dallas Avenue) | Southern end of concurrency with PA 380 |
| Allegheny | Pittsburgh | 2.747 | 4.421 | PA 380 west (Penn Avenue) / Blue Belt (Fifth Avenue) | Northern end of concurrency with PA 380; southern end of concurrency with Blue Belt |
| Allegheny | Pittsburgh | 4.988 | 8.027 | PA 130 east / Green Belt (Allegheny River Boulevard) – Penn Hills | Southern end of concurrency with Green Belt; western terminus of PA 130 |
| Allegheny | Pittsburgh | 5.322 | 8.565 | Blue Belt / Green Belt (Highland Park Bridge) to PA 28 | Interchange; northern end of concurrency with Blue Belt / Green Belt |
| Allegheny | Allegheny River | 6.641– 7.039 | 10.688– 11.328 | Senator Robert D. Fleming Bridge | Senator Robert D. Fleming Bridge |
| Allegheny | Sharpsburg–Etna line | 6.920 | 11.137 | To PA 28 – Sharpsburg | Interchange; northbound exit and southbound entrance, via Bridge Street; Exit 5A on PA 28 north |
| Allegheny | Sharpsburg–Etna line | 7.097 | 11.422 | Sharpsburg | Interchange; southbound exit and northbound entrance |
| Allegheny | Sharpsburg–Etna– Shaler Township tripoint | 7.248 | 11.665 | PA 28 / Blue Belt (Allegheny Valley Expressway) – Pittsburgh, Kittanning | Interchange; southbound exit and northbound entrance; Exit 5B on PA 28 |
| Allegheny | Hampton Township | 12.509 | 20.131 | Green Belt (Duncan Avenue) | Southern end of concurrency with Green Belt |
| Allegheny | Hampton Township | 13.296 | 21.398 | Green Belt (Harts Run Road) | Northern end of concurrency with Green Belt |
| Allegheny | Hampton Township | 14.800 | 23.818 | Yellow Belt (Wildwood Road) – North Park, Dorseyville | |
| Allegheny | Hampton Township | 16.262 | 26.171 | I-76 Toll / Penna Turnpike – Ohio, Pittsburgh | Exit 39 (Butler Valley) on Penna Turnpike; E-ZPass or toll-by-plate |
| Allegheny | Richland Township | 17.937 | 28.867 | PA 910 / Orange Belt (Gibsonia Road) – New Kensington, Pittsburgh International Airport | |
| Allegheny | Richland Township | 19.072 | 30.693 | Red Belt (Bakerstown Road) – Bakerstown, Tarentum, Warrendale | Interchange; no northbound exit |
| Butler | Middlesex Township | 22.684 | 36.506 | PA 228 west – Mars | Southern end of concurrency with PA 228 |
| Butler | Middlesex Township | 24.380 | 39.236 | PA 228 east (Glade Mill Road) – Saxonburg, Ekastown | Northern end of concurrency with PA 228 |
| Butler | Butler Township | 31.535 | 50.751 | AK Steel | Interchange |
| Butler | Butler | 34.461 | 55.460 | PA 356 south (Wayne Street) | Southern end of concurrency with PA 356 |
| Butler | Butler | 34.653– 34.736 | 55.769– 55.902 | PA 68 / PA 356 north (Cunningham Street / Jefferson Street) | Northern end of concurrency with PA 356 |
| Butler | Butler Township | 36.055 | 58.025 | US 422 (Benjamin Franklin Highway) – Kittanning, New Castle | Interchange |
| Butler | Center Township | 37.523 | 60.387 | PA 308 north (West Sunbury Road) – West Sunbury | Southern terminus of PA 308 |
| Butler | Clay Township | 43.888 | 70.631 | PA 138 north (Euclid Road) – West Sunbury | Southern terminus of PA 138 |
| Butler | Brady Township | 47.044 | 75.710 | PA 528 south (Prospect Road) – Prospect, Moraine State Park | Northern terminus of PA 528 |
| Butler | Brady Township | 47.177 | 75.924 | PA 173 north – Slippery Rock | Southern terminus of PA 173 |
| Butler | Slippery Rock Township | 52.891 | 85.120 | PA 108 west – Slippery Rock | Eastern terminus of PA 108 |
| Butler | Harrisville | 55.888 | 89.943 | PA 58 (Mercer Street) – Eau Claire, Grove City | |
| Venango | Barkeyville | 59.985 | 96.536 | PA 208 (Clintonville Road / Barkeyville Road) – Clintonville, Grove City | |
| Venango | Barkeyville | 60.866 | 97.954 | I-80 – Clarion, Sharon | Exit 29 on I-80 |
| Venango | Irwin Township | 63.322 | 101.907 | Southern end of freeway | Southern end of freeway |
| Venango | Irwin Township | 63.322 | 101.907 | Nectarine, Wesley | Southbound exit and northbound entrance, via Georgetown Road |
| Venango | Irwin Township | 66.190 | 106.522 | PA 308 south – Pearl, Bullion | Northern terminus of PA 308 |
| Venango | Sandycreek Township | 73.458 | 118.219 | Northern end of freeway | Northern end of freeway |
| Venango | Frenchcreek Township | 76.015 | 122.334 | US 62 south – Mercer | Southern end of concurrency with US 62 |
| Venango | Franklin | 77.512 | 124.743 | US 322 west (13th Street) to PA 417 | Southern end of concurrency with US 322 |
| Venango | Franklin | 77.952 | 125.452 | US 322 east (Liberty Street) | Northern end of concurrency with US 322 |
| Venango | Oil City | 85.484 | 137.573 | US 62 north (Petroleum Street) – Tionesta PA 428 north (Halyday Street) | Northern end of concurrency with US 62; southern terminus of PA 428 |
| Venango | Oil City | 85.705 | 137.929 | PA 8 Bus. north (Center Street) | Southern terminus of PA 8 Bus. |
| Venango | Oil City | 86.436 | 139.105 | PA 8 Bus. south (Seneca Street) | Northern terminus of PA 8 Bus. |
| Venango | Rouseville | 88.838 | 142.971 | PA 227 east (Cherry Run Road) | Western terminus of PA 227 |
| Venango | Cherrytree Township | 93.600 | 150.635 | PA 417 south – Dempseytown, Franklin | Northern terminus of PA 417 |
| Crawford | Titusville | 100.518 | 161.768 | PA 8 Truck north / PA 27 Truck west (St. John Street) | Southern terminus of PA 8 Truck; eastern terminus of PA 27 Truck |
| Crawford | Titusville | 100.753– 100.798 | 162.146– 162.219 | PA 27 east (Diamond Street / Central Avenue) PA 89 north (North Franklin Street) | Southern end of concurrency with PA 27; southern terminus of PA 89 |
| Crawford | Titusville | 100.985 | 162.520 | PA 8 Truck south (South Perry Street) | Northern terminus of PA 8 Truck; western terminus of PA 27 Truck |
| Crawford | Titusville | 101.187 | 162.845 | PA 27 west (West Central Avenue) – Meadville | Northern end of concurrency with PA 27 |
| Crawford | Hydetown | 103.554 | 166.654 | PA 408 west (Main Street) – Hydetown | Eastern terminus of PA 408 |
| Crawford | Bloomfield Township | 113.985 | 183.441 | PA 77 – Spartansburg, Meadville | |
| Erie | Union City | 122.291 | 196.808 | US 6 west (Meadville Road) – Meadville | Southern end of concurrency with US 6 |
| Erie | Union City | 122.933 | 197.841 | US 6 east (East High Street) – Corry | Northern end of concurrency with US 6 |
| Erie | Union City | 123.092 | 198.097 | PA 97 north (Perry Street) to I-90 | Southern terminus of PA 97 |
| Erie | Amity Township | 130.771 | 210.456 | PA 89 south – Corry | Southern end of concurrency with PA 89 |
| Erie | Wattsburg | 131.290 | 211.291 | PA 474 east – Clymer, Jamestown | Western terminus of PA 474 |
| Erie | Venango Township | 132.854 | 213.808 | PA 89 north – North East | Northern end of concurrency with PA 89 |
| Erie | Millcreek Township | 145.298– 145.315 | 233.834– 233.862 | I-90 – Buffalo, Cleveland | Louis A. Magnano Interchange; Exit 29 on I-90 |
| Erie | Erie | 148.675 | 239.269 | PA 97 south (Old French Road) | Northern terminus of PA 97 |
| Erie | Erie | 148.807 | 239.482 | US 20 (East 26th Street) | Northern terminus of PA 8 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Electronic toll collection Incomplete access ||||||

## Special routes
### PA 8 Business

Pennsylvania Route 8 Business is a 1-mile-long (1.6 km) business route in Venango County, Pennsylvania.
In 1979, a two-lane but development-free bypass of Oil City was constructed on the westbank of Oil Creek and featured the designation of Pennsylvania Route 8 Bypass. The original eastbank sector and its two bridges were initially kept as mainline Route 8. The first half of the very short route features one-way couples through the heart of the municipality, and the northern half features a single, business-lined two-lane street. Mainline Route 8 was redirected to the former bypass upon the commissioning of Route 8 Business.

### PA 8 Truck

Pennsylvania Route 8 Truck is a 1⁄2-mile-long (0.80 km) truck route in Titusville, Crawford County, Pennsylvania. In 1980, the designation was established to remove trucks from the complicated intersection with Pennsylvania Route 27 and to provide direct access for local trucks past the borough's small industrial area along St. John Street. For its entire length it is cosigned with Truck Route 27.

### PA 8 Alternate Truck

Pennsylvania Route 8 Alternate Truck is a truck route around a weight-restricted bridge over the East Branch of the Oil Creek, on which trucks over 32 tons and combination loads over 40 tons are prohibited. The route follows PA 408 and PA 77 and was signed in 2013.

### PA 8 Bypass

Pennsylvania Route 8 Bypass was the original designation for PA 8 Business. PA 8 Bypass was signed in 1979, but was decommissioned and renamed PA 8 Business in 2000.