List of bus routes in Pittsburgh

Pittsburgh Regional Transit's bus system covers Allegheny County, and its service extends into small portions of neighboring Beaver, Butler, and Westmoreland counties. These counties also have their own transit systems, including several routes that run into Downtown Pittsburgh, where riders can make connections with Pittsburgh Regional Transit service. In, the system had a ridership of.

Route renumbering and realignments

From 1964 to 2010, the Port Authority used an alphanumeric numbering system. With the renumbering and realignments outlined in the Transit Development Plan in 2009, the present numbering system was adopted in April 2010.
Light rail and busways are designated by the following colors:

Red Line—former 42S South Hills Village via Beechview light rail route
Blue Line—former 47S South Hills Village via Overbrook light rail route
Silver Line — former 47L Library via Overbrook light rail route
Brown Line—former 52 Allentown light rail route
Green—bus routes using the West Busway, designated with a 'G'
Purple—bus routes using the Martin Luther King Jr. East Busway, designated with a 'P'
Orange—bus routes using the I-279 HOV lane, designated with an 'O'
Yellow—bus routes using the South Busway, designated with a 'Y'

As a result of the Transit Development Plan and a series of service cuts, many routes have been reworked or eliminated.

Bus routes

Bus operations

Route numbers operating seven days a week including holidays are listed in Blue. On most of the daily bus routes, they operate on a 60-minute interval after 7 pm Monday through Saturday and all day on Sunday and Holidays.
Route numbers operating Monday through Saturday with limited or no holiday hours are listed in Red
Route numbers operating Monday through Friday only are listed in Bold.
All other plain routes operate Monday through Friday during peak periods only.

Eliminated services

Discontinued routes

Bus routes that are discontinued from the lineup and integrated into other one or more route throughout PAT's history include:

Route number	Route name	Replaced by
1B	Saxonburg Boulevard	D Middle Road Flyer
1C	Middle Road	D Middle Road Flyer
1E	Etna	-
1F/3	Millvale
3A	New Kensington Express
3L	Creighton-Lower Burrell Express	P10 Allegheny Valley Flyer
3M	Tarentum-Natrona Express	P10 Allegheny Valley Flyer
4A	40th Street Bridge
4B	Blawnox
4E	Millvale Loop/Skating Rink	Ran from November 6, 1964 to March 1965.
5A/5	Natrona-Argonne Drive/Natrona
5B	Natrona-Spring Hill Road	Discontinued March 25, 2001
5C	Natrona Heights-Brackenridge
5D	Valley Camp	Discontinued December 13, 1970.
5E	Schafers
5F	Valley Heights
5G	Aluminum City Terrace
5H	Braeburn
5J	Marlborough Drive	Discontinued December 14, 1970.
5K	Culmerville-New Kensington
5M	Culmerville-Tarentum
5N	Indianola	Ran from February 25, 1974 to August 30, 1974.
5N	New Kensington Bridge	Temporary shuttle from May 1, 1989 to September 1, 1989.
6D	Spring Looper	7 Spring Garden
11A	McKnight	12A North Hills Shopper, 13C Perry Highway Express
11B	Evergreen
11C/9	Perry Highway
11F	West View
11G	Thompson Run
13B	Babcock Express	12A North Hills Shopper, 13A North Hills Express, O5 Thompson Run Flyer
13C	Perry Highway Express	9 Perry Highway, 13X Ross Park and Ride
13D	Perrysville Express	6B Spring Hill, 11D Perrysville, 16F City View
13F	West View Express	8 Perrysville, 13X Ross Park and Ride, 500 Highland Park-Bellevue
13H	Rochester Road Express	13J Franklin Park
13J	Franklin Park Express
13K	Warrendale, Cranberry	Operated by Port Authority until 2011, then Lenzner Coach Lines until 2022.
13S	Ross Park and Ride
13U/O4	North Hills Express/North Hills-Oakland Flyer
14C	Bryant School Run Road Express	13J Franklin Park
15A	North Hills Shuttle
16B	Emsworth to High Bridge	Renamed 16B Brighton on April 30, 1966.
16C	Bellevue-West View	500 Highland Park-Bellevue; resurrected as 13 Bellevue when the 500 was split.
16E	Reedsdale	Discontinued July 26, 1982 due to duplication with other routes.
16F	Charles Street	Discontinued October 22, 1966.
16G	Charles Street	Temporary route that ran from April 17, 1988 to December 12, 1988.
16U	North Shore	501 North Shore-Downtown-Oakland
18A	Aliquippa Express
18C	Bellevue-Union Avenue Express	14 Ohio River Valley, 19L Emsworth Limited, 500 Highland Park-Bellevue
18E	Manchester Express
19A	Bellevue-Avalon	Discontinued September 2, 1969.
19B	Manchester-Evergreen	Discontinued February 7, 1977.
19C	City View	Renamed 16F City View on September 2, 1979.
20A	Ben Avon Heights	Discontinued 1970.
24A	Crafton-Presston	Discontinued 2010.
24B	McKees Rocks Bridge	Discontinued 1972.
25A	Sewickley-Groveton	Merged with 21A Coraopolis on December 8, 1968.
25/25A	Moon/Robinson-Moon-Coraopolis	Discontinued 2011.
25B	Broadhead Road
25C	Coraopolis-Sharon Hill Manor	Discontinued by 1968.
25C	Hankey Farms
25D	Robinson-Carnegie
26C	Ingram via Steuben Street	Replaced by 26B & 100 when West Busway opened in 2000
26D	Chartiers City	26 Chartiers & 27 Fairywood
26E	Robinson	29 Robinson
26F	Moon Run-Forest Grove via West End	28F Forest Grove Express
26U	Robinson-Oakland	26E Robinson
28A	Wings Over Pittsburgh	Special Service for Airshows
28B	Berry Street Express	26B Fairywood
28E	Robinson Express	29 Robinson
28F	Forest Grove Express
28G	Oakdale Express
28J	Settlers Ridge Express	Temporary Park and Ride Route for Closure of Fort Pitt Tunnels in early 2000s
28K	Moon Express	G3 Moon Flyer
28M/32	Campbells Run
28S	Moon-West Busway
29A	Thornburg	Discontinued in 1965.
29E	Millers Run	31 Bridgeville, G31 Bridgeville Flyer
30A	West End Shuttle	Ran from November 28, 1989 to May 31, 1990.
31A	Carnegie-Crafton	Route became redundant with opening of West Busway
31B	Crafton-Heidelberg
31C	Crafton-Ingram
31F	Pittsburgh-Carnegie
32G	Carnegie-Craftmont	Discontinued in 1965.
33X/G1	West Busway-All Stops/West Busway-Robinson
33F	McDonald
34B	Mt. Washington-North Side	Discontinued August 30, 1981.
34C	Warrington-Grandview
35A	Rosslyn Heights
35A	South Park-Baldwin-Whitehall	Y47 Curry Flyer, Y49 Prospect Flyer
35B	Rosslyn Farms
35C	Wabash Hill
35D	Cubbage Hill
35E	Campbells Run
36B	Virginia Manor
36C	Greentree/Ridgemont
36D/37	Westwood/Ridgemont
37	Castle Shannon Shuttle	Temporary route while Red Line was under construction
37A	Mt. Lebanon-McFarland	-
37D	Dormont Station	Temporary route while Beechview Line was under construction
38A	Airport Express	Became A Airport Red Flyer on November 18, 1973
38B	Carnegie Express
41A	Pioneer Avenue	41D Brookline, 41G Dormont
41B	Mt. Lebanon
41B	Bower Hill	41 Bower Hill
41C	Cedar Boulevard	36 Banksville
41G/35	Dormont-Rolling Hills/Sunset Hills	Partially replaced by 35 Sunset Hills south of Dormont station
42	Dormont	Mount Lebanon Station, Dormont, Brookline, South Busway, Station Square, Downtown
42	Potomac Shuttle	Temporary route while Red Line was under construction
42C	Castle Shannon ONLY via Beechview	Red Line
42F	Broadway	Temporary rail shuttle for Red Line
42L	Library via Beechview	47L Library via Overbrook Light Rail route
44A	Shadycrest	Discontinued on August 24, 1985.
44B	Sunset	Discontinued on November 21, 1982.
44C	Duquesne Heights	Discontinued on September 3, 1966.
44D	Jefferson
44E	Inglewood	Discontinued on February 19, 1983.
44F	Mt. Lebanon-Oakland	Converted to U-Bus service and renamed 44U Mt. Lebanon-Oakland on September 3, 1973.
44F	Terrace
44L	Library Short
44S	Castle Shannon-Beechview	Temporary Rail Car Shuttle
44U/42	Mt. Lebanon-Oakland
45A	Heidelberg-Kane Hospital	Discontinued in 1966.
46A	Brentwood	51 Carrick, Y45 Baldwin Manor Flyer
46C	Ruthfred Acres	Discontinued on September 3, 1966.
46E	East Brookline	Converted to EB East Brookline Red Flyer on February 20, 1977.
46H	Pleasant Hills	Y1 Large Flyer, Y46 Elizabeth Flyer
46S/41F	Shannon-Overbrook/McNeilly	Temporary route during closure of the Overbrook line from 1993-2004. Renumbered 41F on 9/1/02 and eliminated 9/5/04.
47D	Drake	Discontinued on September 4, 1999.
48G	Pittsburgh-Clairton Express
49C	Washington Road-Whitehall	Discontinued on November 20, 1982.
49D	Drake-South Park Road	49C Washington Road-Whitehall
49G	Piney Forks Village-Library Loop	Ran from September 15, 1975 to April 18, 1976.
49H	Gill Hall	Ran from September 6, 1966 to November 5, 1966.
50A	Colonial Village-Wilson Newtown	Merged with the then-50B Glassport on June 15, 1968
50B	Glassport-Clairton
50C	West Elizabeth-Monongahela
50D	Glassport-Elizabeth
50E	Clairton-Irvin Works
50F	Clairton-South Park
50G	Riverview Circle	Discontinued on November 22, 1969.
50H	Elizabeth-Blaine Hill
50J	McKeesport-South Park
51B/50	Spencer
51C	Brentwood Villa	Discontinued on July 31, 1965 due to duplication.
51D	Churchview	50 Spencer
51E	Pittsburgh-Clairton via Rt 885 or Irvin Works
51F	Duquesne via South Side
51S	South Side-Century III-Large
53F	Homestead-Lincoln Place Express	53 Homestead Park and 53L Homestead Park Limited
53H	Homeville-Duquesne	52 Homeville and 52L Homeville Limited
54A	Arlington Heights
54B	Arlington-South Hills	Discontinued on February 20, 1977 due to redundancy with 46K and 54A.
54D	Bon Air	Discontinued on February 8, 1970.
54E	P&LE Transfer	Discontinued on July 15, 1968.
55B/52	Homeville
55C	Whitaker
55D	West Run-Brierly Lane
55E	Whitaker-West Mifflin	59 Mon Valley
55F	New Homestead-Calhoun Village
55G	Terrace
55H	Homestead-Duquesne
55J	McKeesport-Duquesne
55K	Kennedy-Crawford
55M/55	Century III Mall/Jefferson	55 Jefferson eliminated during service cuts; later restored as 55 Glassport
55P	Duquesne-Irvin Works	Discontinued on November 22, 1982.
55T	Homestead-Continental Can.
55U	Homestead-South Park
55V	Homestead-Irvin Works
56U	Greenfield	58 Greenfield
58C	McKeesport	P7 McKeesport Flyer
58P	Port Vue-Liberty Express	P7 McKeesport Flyer
58V	Versailles Express	P7 McKeesport Flyer
59A	Homeville	Ran from March 1, 1964 to March 5, 1964.
59B	Glen Hazel
59U	South Side Works-Oakland-Waterfront	75 Ellsworth & 61D Murray
60A	Walnut-Avondale	Walnut-Crawford Village
60B	Jenny Lind	61 White Oak
60C	Grandview	60E White Oak-Grandview
60D	Bryn Mawr
60D	Lincoln School
60E/61	White Oak-Grandview/White Oak
60F	Johnston's Greenhouse
60G	Fairhaven Heights
60H	Blythdale
60J	Blythdale-Grennock Heights
60K	Crawford Village	60 Walnut-Crawford Village
60M	McKeesport-East Pittsburgh	62 Liberty-North Versailles
60N	East Pittsburgh-Turtle Creek	Redesignated as 65N East Pittsburgh-Turtle Creek on February 18, 1984.
60P/62	Port Vue-Liberty/Liberty-North Versailles
60S	Crawford Village-Jenny Lind	60 Walnut-Crawford Village
60T	Wilmerding-McKeesport
60U	Liberty
60V	Evans Avenue	Planned but never ran; instead merged into 60C/60E
60W	Liberty-Lincoln-Elizabeth Township	Merged into the 60U on November 6, 1976.
60W	Central Highlands
61F	Homestead Park	53 Homestead Park
63A	North Braddock Express
63B	Rankin Express	P71 Swissvale Flyer
64	East Pittsburgh-Wilkinsburg	Converted to bus and became 61A East Pittsburgh-Wilkinsburg on January 29, 1967.
65A	East Pittsburgh-Monroeville
65B	East Pittsburgh-Crescent Hill
65C	Braddock-Wilkinsburg	Discontinued on September 7, 1970 and replaced by 65G rerouting and 68D extension.
65D	Braddock-Forest Hills-Braddock Hills	Discontinued on November 19, 1977.
65E	North Braddock-Swissvale
65F	Bessemer Terrace	Discontinued on September 7, 1970.
65G	Corey Avenue/Linhart-Braddock	Merged with 65H and 65K to form 65G Linhart-Braddock-East Pittsburgh on September 5, 1965.
65G	Linhart-Braddock-East Pittsburgh
65H	East Pittsburgh-Park View	Merged into the 65G on September 5, 1965.
65J	Braddock-Forest Hills
65K	Braddock-Bessemer Terrace	Merged into the 65G on September 5, 1965.
65M	Corey Avenue	Merged with the 65N to form the 65G in mid-1964.
65N	Library Street	Merged with the 65M to form the 65G in mid-1964.
65N	East Pittsburgh-Turtle Creek
67	Braddock-Swissvale	Converted to bus and became 61B Braddock-Swissvale on January 29, 1967.
67C	Laketon Road
67E	Greensburg Pike
67J	McKeesport via Blvd of the Allies	Discontinued on September 8, 1964.
67J	Lincoln Highway
68	Braddock Hills	P68 Braddock Hills Flyer
68B	Blackridge-Laketon
68S	Monroeville-East Busway
69A	Swisshelm Park	Discontinued on November 5, 1972.
69A	Forbes	61A East Pittsburgh-Wilkinsburg
69B	Atwood Street	Merged into the 84A on January 14, 1967.
69C	Regent Square	Merged into the 79A and 79B on July 1, 1979.
70A	Trafford-Jeanette
70B	Wilmerding-Monroeville
70C	Wilmerding-East Pittsburgh
70D	Wilmerding-Wall
71B	Hamilton	500 Highland Park-Bellevue; resurrected as 71B Highland Park when the 500 was split.
73B	Highland Park Express	93A Aspinwall-Cheswick Express
74B	Marcy State Hospital
74B	Highland Park
75A/70	Monroeville Shopper
75B/72	Monroeville-North Versailles/Monroeville-Pitcairn
75D	Penn Hills-Monroeville
77A/78	Oakmont	P78 Oakmont Flyer
77C	Shadyside	W Wilkins Avenue Flyer
77D	Highland-Friendship	87 Friendship
77U	Shadyside
78C	Shadyside Express	W Wilkins Avenue Flyer
78E	Penn Hills-East Vue Express	P16 Penn Hills flyer
79B	Wilkinsburg-Penn Hills
79C	Maplewood	Discontinued in 1975.
83B	Lincoln Avenue Express	LP Lincoln Park Flyer
84A	Herron Hill-Oakland	81 Oak Hill, 83 Bedford Hill
84B	Herron	Replaced by rerouted 54C North Side-Oakland-South Side in 1968 or 1969.
84B	Oakland Loop
84C	Hill Loop	81 Oak Hill, 83 Bedford Hill
88A	East Hills Express
89C	Homewood North	Trial route that ran from January 7, 1973 to February 19, 1977.
91S	Sharps Hill
93A	Aspinwall-Cheswick Express	P10 Allegheny Valley Flyer
94A	Stanton Heights	87 Friendship
94B	Morningside	87 Friendship
94C	Paulson Avenue	74 Homewood-Squirrel Hill
96A	Golden Triangle	Discontinued on July 7, 1985. But resurrected temporarily on December 7-8th 2019 for a fan trip
98D	Strip District
98F	Grant Street-First Avenue
500	Highland Park-Bellevue	13 Bellevue, 71B Highland Park
501	Manchester-Wilkinsburg	16D Manchester, 61A East Pittsburgh-Wilkinsburg
A	Moon Flyer
AVN	Allegheny Valley North Flyer	P10 Allegheny Valley Flyer
BG	Bellevue-Gass Road Flyer	Discontinued on August 28, 1993.
BP	Brookline-Pioneer Tunnel Flyer
BR	Brentwood Flyer	51 Carrick, Y45 Baldwin Manor Flyer
CL	Clairton Flyer	46G Elizabeth
CO	Coraopolis Flyer	21 Coraopolis
CV	Churchview Flyer	51D Churchview
D/P11	Middle Rd Flyer	-
DB	Middle Road-Burchfield Flyer	D Middle Road Flyer
EB	East Brookline Red Flyer
F	Homestead Park-Lincoln Place Flyer	53F Homestead-Lincoln Place
G	Greensburg Pike Flyer
GC	Garden City Flyer	P67 Monroeville Flyer
GR	Greensburg Pike-White Oak Flyer	G Greensburg Pike Flyer
H	Homeville Flyer
JL	Jefferson-Large Flyer
ML	Millvale-Lawrenceville Flyer	3 Millvale
OA	Oakland Arrow	Discontinued on February 18, 1977.
OV	Ohio Valley Flyer	14 Ohio Valley
P2	East Busway-Short	Discontinued on October 1, 2023 and replaced with additional P1 East Busway-All Stops trips
PH	Pleasant Hills Red Flyer	Discontinued in 1976.
SW	Spencer-Willett Flyer	51B Spencer
T	Trafford Flyer	67F Trafford and 68F Trafford Express
U	East Vue Flyer	78E Penn Hills-East Vue
UV	UltraViolet loop
W	Wilkins Avenue Flyer

Former special services

Port Authority operated special park and ride shuttles to Steelers' games and other stadium events from 1967-2011. Routes with an "S" were for servicing one time events.

Route number	Route name	Service area
13S	Ross Park & Ride	Ross Park & Ride Lot
28S	Moon-West Busway	University Blvd, Bell, Idlewood, Crafton, Columbus's Knights, Sheraden Park & Ride Lots
51S	South Side-Century III	Large and Century III P&R Lots, South Side and Station Square
68S	Monroeville-E Busway	Monroeville and Wilkinsburg P&R, Homewood, E. Liberty, Shadyside, Polish Hill
98D	Strip District	Strip District, Convention Center Parking Garage
98F	Grant Street-First Avenue	1st Ave and Steel Plaza Stations, Wood and Gateway Center Stations, Downtown P Garage