Signed in 1964 on its current alignment

In 1932, the road was paved from Selinsgrove to Kratzerville and from Little Mexico Road to New Berlin.  In 1935, the section in Kratzerville was paved.

In 1950, the section from PA 158 to New Castle Road was paved.  In 1959, the western terminus was move to its current location from PA 158 via Leesburg Station Road.  Also the eastern terminus was moved from PA 38 west of Emlenton to Shippensville.

In 1968, the eastern terminus was moved to its current location.

In 1940, the section from Girty to Oak Hill Road was paved with the section in Girty being paved in 1947.

Construction started in 1966 on a new alignment between Gastown and Sagamore due to the creation of the Plum Creek Reservoir, which opened a year later.

Not many, or even any, Pennsylvania roadways would earn an award for pavement according to the traveling public, but one section did in 2012.  A 2.7-mile-long section of asphalt just north of US 422 which was placed in 1971, won the 2011 Perpetual Pavement Award from the Asphalt Pavement Alliance.  Only two asphalt overlays have occurred since that time, an average of 18.5 years between, which exceeds the average of 10 to 12 years normally.

Construction began in Spring 2008 on the Loganville Connector, which cuts through the northern parts of the borough while removing traffic from passing through its center via West Ore Street and North Main Street, and thus creating a shorter route to Interstate 83.  The new $6.7 million alignment opened on October 5, 2009.

In 1930, the northern terminus was moved from West Pittston to Hughestown.  In 1935, the section from the Jenkins Township line to Dupont to was paved and in 1938, the section from Gouldsboro to Bear Creek Village was paved.

Signed in current location in 1962.  In 1969, southern terminus moved from Albion via Albion Road to its current location.

The eastern terminus moved from Susquehanna Trail onto Church Street from Glen Rock to to I-83 in 1960 then moved to its current location in 1961.  The route was moved back to the original alignment from Glen Rock to Susquehanna Trail in 1971.

Signed in 1961.

Signed in 1936 on its current alignment.

In 1940, a section from Oak Ridge Road to just south of Acheson was paved.  Paving continued in 1946 at Pleasant Valley Road.  Also, until 1946, another section was signed as PA 221 from PA 121 between Newtown and Poland Mines on Dunkard Hill Road.  That year that section was decommissioned.

SR 0224 is currently assigned to US 224.

In 1932, the route was paved from Line Mountain to Gowen City and from Burnside to Shamokin.  Also that year the route was finished from Line Mountain to Hegins.

The original northern terminus was PA 25 and PA 125 in Hegins until 1936, that is when it was moved to Shamokin.  That year the southern terminus was moved from Berrysburg to US 22/US 322 at the intersection of Claster Boulevard and Allegheny Street in Dauphin.  It was moved yet again 1999 to end at the US 22/US 322 expressway when it opened.

Signed in 1961 on its current alignment.

In 1941, the section between the Butler County line and Slate Lick was paved.  In 1946, the western terminus was moved from Slate Lick to PA 356 in Sarver.  Also the section between Sarver and the Armstrong County line was paved.

In 1953, the section between Saxonburg Boulevard and Freeport Street was completed.

In 1970, the western terminus was moved from Sarver to its present location.  That same year, the eastern terminus was moved from Cowansville via current SR 3011 to PA 28 at Exit 18.

Until 1984, the eastern terminus was located at Exit 18 of PA 28.  Up until that year, the route had continued past PA 356 on current SR 2018 in Butler County and SR 3004 and SR 3017 in Armstrong County but was truncated to its current location in that year.

In September 2002, with the explosion of growth in the Cranberry area, alternative routes were explored.  One involved widening PA 228, while two others proposed new alignments of PA 228:  one north of the existing route, and one south.  The northernmost route would run through Middlesex, Adams, Seven Fields, and Cranberry and the southernmost route would run through Middlesex, Valencia, Pine, Marshall, and Cranberry.  These were reject for reasons ranging from environmental impact to socio-economical impacts.  The initial 18 alternatives presented drove residents of Lowery Drive in Middlesex Township to form Families United to Maintain our Existing Serenity or "FUMES."  Seven alternative were left for PennDOT to consider, with construction to have begun in 2008 if PennDOT had not restructured their 12-Year Transportation Program.  

Officials in Buffalo Township feel slighted by all the attention being given to the western end.  Widening PA 356 has been discussed, but using PA 228 to siphon traffic off of it would be a better plan.  The needed improvements are because the township is growing with people and industry.  PennDOT says that any improvement to the eastern end will come after the western end is improved.

In July 2018, the Butler County commissioners had submitted an application to the federal government's Better Utilizing Investments to Leverage Development (BUILD) grant program for aid in furthering improvements to the route.  On December 6, 2018, US Representative Mike Kelly announced that their work was not done in vain, and they would receive over $24 million to widen PA 228 to four lanes and straighten the alignment approaching PA 8.  These would be the last pieces of the Gateway 228 improvement project begun in the 1980s.

A median was installed in 1977 at Harrisburg International Airport to facilitate traffic to and from the new Airport Connector.  In 1979, the route was multiplexed with US 22 and its western terminus was moved to I-81 at Exit 67.  In 1987, the western terminus was moved back to its current location.

In 1941, the section from the Cumberland County line to Laurel Run Road was paved, and the sharp curve near the county line eliminated.  Also that year, the northern terminus was moved from PA 17 in Icklesburg to its current location.

In 1940, the section from the Juniata County line to Lick Run was improved.  In 1941, the section from Lick Run to Three Rivers Road was paved. The northern terminus was moved to its current location from US 522 in Beaver Springs in 1946.  The route was paved between PA 35 and Lick Run in 1947.

In 1971, the designation was moved to its current routing to bypass Beaver Springs.  Prior to that year, it traversed the borough on Spruce Street, Center Street, and Pine Street.

Signed on its current alignment in 1961.

In 1936, the southern terminus was moved from US 11 in Shickshinny, to PA 29 in Koonsville.

In 1966, the northern terminus was moved to its current location from PA 254 in Benton and the southern terminus was moved to its current location from US 11 in Shickshinny.

An oil-and-chip project along the route in Luzerne County near Shickshinny did not turn out the way the Department of Transportation would have liked.  The roadway was resurfaced on Monday, June 17, 2019, but the tar did not dry which damaged numerous vehicles as it then adhered to their tires.  In an effort to dry the mixture, PennDOT closed the road and began laying down sand in the hope that it would absorb some of the moisture.  However, that did not work, and the oil and stone chip mixture had to be scraped off, which at least opened the route by the morning of June 19.  Crews returned on July 15 to redo the job, and PennDOT said the oil had been sent off to be tested to determine why it did not dry.  "Normally as soon as they put this down, it hardens, and you can drive on it again. And so they put this down. The road was not wet. It was not raining at the time. It didn't rain until hours and hours later, and it should have all been set up at that time," said PennDOT spokesperson James May.

In 1961, the southern terminus was moved from PA 743 in Maytown to its current location

In 1964, the eastern terminus was moved from PA 44 south of Bloomsburg to Newscopeck.

The southern terminus moved from US 6 in Blakley to PA 348 in Mount Cobb in 1946.  That year the route was moved to its current alignment from Montdale to Dundaff from Clifford Road in Lackawanna County.

In 1978, the southern terminus was moved to the current location at Interstate 84.

Mine subsidence caused a hole to open on Keystone Avenue in Peckville on the afternoon of March 16, 2012.  PennDOT closed the roadway and began excavating to determine how deep it was and what caused it to open.  The hole was about 25 feet and about that wide at the bottom.  PA 247 remained closed until March 19.

Signed on its current alignment in 1966.  In 1970, the route was removed from Northampton Street between Seventh Avenue and  through Easton to avoid the center of town  to its current route through Easton from Northampton Street to 

A median was installed in 1989 from Palmer Park to US 22.

Resigned in 1961 for the York Bypass.  The highway was widened and a median installed on it from Loucks Road to North George Street in 1968.  Two years later, the same occurred between North George Street and North Hills Road.  Construction began on the route from North Hills Road to PA 24 in 1971 to upgrade it to expressway standards.  That section was completed in 1972.