Interstate Business Loop 83 marker Southern Terminus: Interstate 83 at Exit 15 two miles south of York
Northern Terminus: Interstate 83 at Exit 22 one-half mile north of North York
Length: 5.28 miles
National Highway System:
Entire length
Names: South George Street and North George Street
SR Designations: 3075:  Interstate 83 to South George Street (northbound) and Country Club Road and Rathton Road to Interstate 83 (southbound)
3001: South George Street to Country Club Road and Rathton Road (northbound)
3065:  Arch Street to US 30
0181:  US 30 to Interstate 83
County: York
Expressway: Exit 15 of Interstate 83 to South George Street
Multiplexed Route: PA 181:  US 30 to Interstate 83
Former Designations: PA 4 (1925 - 1928):  South George Street to Interstate 83 at Exit 22
US 111 (1928 - 1960)  South George Street to Interstate 83 at Exit 22
Former LR Designations: 127 Parallel:  Interstate 83 to South George Street
127:  South George Street to PA 462
250:  PA 462 to Interstate 83
BicyclePA Route J marker BicyclePA Route: Market Street to Interstate 83
History:

The only Interstate business route that originates from Interstate 83 for its entire length, and the only two-digit one located within the Commonwealth of Pennsylvania.  Construction on the section from Interstate 83 to Country Club Road began in 1958 and finished one year later.  However, the designation would not be signed until 1961.

The original route had it traveling George Street for its entire southbound path and northbound, it turns at Jackson Street, turns north onto Duke Street, and then west on North Street to get back to George Street.  The designation was moved completely to George Street in 2003 when it was made two-way.

In May 2003, PennDOT began rehabilitating the section from Interstate 83 at Exit 15 to Country Club Road.  Not only widening and realignment of the ramps at Interstate 83 with construction of a ramp from southbound Business Loop Interstate 83 to northbound Interstate 83, but also resurfacing the highway was part of the project.  The project concluded on December 6, 2006 at a final cost of $58 million.

Links: Interstate Business Loop 83 Pictures
Interstate 83
PA 4
US 111 (Decommissioned)
Interstate Business Loop 83 - Andy Field/Alex Nitzman
Interstate Business Loop 83 Pictures - Andy Field/Alex Nitzman