Editing Interstate 97 (section)

===Predecessor highways===
The first modern highway along the path of what is now I-97 followed the corridor from New Cut Road to south of the intersection of MD&nbsp;178 and Veterans Highway at Dorrs Corner. This highway was intended as a second route from Glen Burnie to Annapolis to complement the highway along the east side of the Severn River; this western route later became known as General's Highway, a name still applied to its MD&nbsp;178 portion.<ref name="1919 src report"/><ref name="1934 src report"/> Construction of this highway was underway by 1919.<ref name="1919 src report"/> The new highway was completed as a gravel road from New Cut Road to north of Benfield and as a concrete road through Benfield and across Severn Run to near Dorrs Corner by 1921.<ref name="1921 map"/> In 1922, this highway was designated part of Robert Crain Highway, a new highway to connect the Baltimore area with Southern Maryland.<ref name="1926 src report"/> The Glen Burnie–Dorrs Corner portion of the new highway was reconstructed and completed as a concrete road from Glen Burnie south through Millersville by 1923.<ref name="1923 map"/> Robert Crain Highway became part of MD&nbsp;3 in 1927 and then US&nbsp;301 in 1939 when the US Route was extended from Virginia to Baltimore.<ref name="1927 map"/><ref name="1939 map"/> MD&nbsp;3 was reconstructed in 1933 and 1934.<ref name="1934 src report"/> The reconstruction eliminated several dangerous curves, particularly near the Severn River, and expanded the highway from a width of {{convert|15|to|20|ft|m}}.<ref name="1934 src report"/> Veterans Highway follows much of that early 1930s course.<ref name="USGS Odenton 1946"/>

[[File:2019-07-25 11 21 28 View south along Interstate 97 (Glen Burnie Bypass) from the overpass for Wellham Avenue in Ferndale, Anne Arundel County, Maryland.jpg|thumb|left|View south along I-97 from Wellham Avenue in Ferndale]]
The next portion of I-97 predecessor highway was built as the four-lane Glen Burnie Bypass from Robert Crain Highway and New Cut Road north to the Baltimore Beltway. Construction on the four-lane freeway began in August 1954 with construction of several bridges over or for the highway; these bridges were completed in 1955 and 1956.<ref name="logbook 1p8"/> The dual roadways and interchange ramps from the southern end of the bypass to MD&nbsp;648 were constructed starting in March 1955; the concrete-surfaced highway was completed in February 1957. The northernmost portion of the bypass, including the adjacent portion of the Baltimore Beltway, was constructed between December 1955 and September 1957.<ref name="logbook 1p9"/> US&nbsp;301 was moved onto the bypass and the adjacent portion of the Beltway when the projects were completed in 1957.<ref name="1957 map"/> The small portion of I-97 north of the Beltway was added to the Baltimore Harbor Tunnel project as a direct connection between the Glen Burnie Bypass and the Harbor Tunnel Thruway's southern approach from MD&nbsp;2 in 1955.<ref name="1956 src report"/> This segment was completed and opened with the tunnel and its approach highways in November 1957.<ref name="1958 src report"/> The Glen Burnie Bypass was constructed with five interchanges: a partial cloverleaf interchange at MD&nbsp;3 Bus. and New Cut Road; a tighter four-ramp partial cloverleaf interchange at MD&nbsp;174; a diamond interchange at MD&nbsp;176; the current four-ramp partial cloverleaf interchange at MD&nbsp;648; and a half-cloverleaf interchange at I-695 allowing full access between the Glen Burnie Bypass and beltway but no access between the beltway and the Harbor Tunnel Thruway.<ref name="USGS Relay 1960"/>

US&nbsp;301 was expanded to a divided highway from the southern end of the Glen Burnie Bypass to Benfield in 1956 and 1957. The highway's second set of lanes, including a new bridge across the Severn River, was constructed and the existing roadway was reconstructed from Benfield to Millersville between 1957 and 1960.<ref name="logbook 1p9"/> The second set of lanes was built on the west side of what became a very wide median, which allowed businesses to site themselves in the median between the northbound and southbound lanes.<ref name="USGS Odenton 1965"/> During construction of the Benfield–Millersville stretch, US&nbsp;301 was relocated to its present course from [[Bowie, Maryland|Bowie]] to the [[Eastern Shore of Maryland|Eastern Shore]] and replaced with MD&nbsp;3.<ref name="1959 map"/> A pair of ramps between the Glen Burnie Bypass and MD&nbsp;177's freeway southern bypass of Glen Burnie (now MD&nbsp;100) were constructed between 1963 and 1965.<ref name="logbook 1p9"/> The first section of highway south of Dorrs Corner was built between 1969 and 1972 as a two-lane segment of MD&nbsp;32 from east of Odenton to MD&nbsp;178 in Crownsville.<ref name="logbook 1p9"/><ref name="1972 map"/> The highway used what are now the ramps of I-97's partial interchange with MD&nbsp;178 and had a five-ramp interchange with MD&nbsp;3 in Millersville that lacked access from northbound MD&nbsp;3 to eastbound MD&nbsp;32 and from westbound MD&nbsp;32 to southbound MD&nbsp;3.<ref name="USGS Odenton 1980"/>