Bethlehem. US 222 replaced the former US 22 alignment from Reading to Allentown. Hamilton Street was numbered as US 222, west of Center City Allentown, where it turned north onto 15th Street. This portion of US 222 was seven-blocks long which ended at Tilghman Street (then US 22). Signs were changed to reflect the new designations on May 31, 1932, with the new route designations officially in place on June 1, 1932. The first stretch of highway between Perryville and Conowingo in Maryland that would become part of US 222 to be improved was in Perryville, where Cecil County constructed with state aid a macadam road from the Aikin station on the Baltimore and Ohio Railroad south toward the Post Road (now MD 7) by 1910. Cecil County extended the macadam road to the Post Road by 1919. The highway from the Aikin railroad crossing to Port Deposit was paved as a concrete road in two sections: from the railroad to near Port Deposit by 1921 and through Port Deposit by 1923. MD 268, which was the original designation for the road between Perryville and Conowingo, was paved as a concrete road from Port Deposit to US 1 at Conowingo Dam between 1930 and 1933; the construction work included repurposing a railroad bridge across Octoraro Creek as a highway bridge. MD 268's bridge across the Baltimore and Ohio Railroad was constructed between 1931 and 1934. The old highway approaching the Aikin grade crossing became MD 449. MD 268 was proposed to be widened to from US 40 to US 1 in 1934. The section of Rock Springs Road between present-day US 1 and Old Conowingo Road/Ragan Road was constructed by the state of Maryland as a macadam road by 1921. The portion of Rock Springs Road between Old Conowingo Road/Ragan Road and the Pennsylvania border was built by the state as a concrete road by 1928. US 222 was designated in Maryland by 1930, with the southern terminus at US 1 in Conowingo. MD 268 was replaced by a southern extension of US 222 from US 1 at Conowingo to US 40 (now MD 7) in Perryville in 1938. The portion of US 222 from US 40 to near Port Deposit was expanded to improve access between the U.S. Highway and United States Naval Training Center Bainbridge, east of Port Deposit in 1942 and 1944. With the construction of the