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MD 3(N-S)/MD 450(E-W) Duplex
Maryland Routes 3 and 450 join for 0.50 miles near Crofton in Anne Arundel and Prince George's Counties
MD 450 joins MD 3 on what is left of MD 3 after US 301 and I-97 took up most of its roadway. MD 450 is the Defense Highway to the east and leads straight to Annapolis. Curiously, MD 450 west is Annapolis Road.
Southbound MD 3 with dual signs for MD 450. The northern split has 4 lanes of MD 450 and 6 lanes of MD 3 meeting at a traffic signal.
The view from MD 450 west, which makes a left turn onto MD 3.
More signs showing the start of the duplex.
Turning onto the shared highway, only MD 3 is signed.
Half a mile to the south, MD 450 heads west. MD 450 parllels US 50 almost all the way from Washington, DC, to Annapolis.
The southern split. MD 3 continues south for about two more miles before ending at I-595/US 50/US 301.
MD 450 east makes a left turn onto MD 3 north at the southern split. I do not know why the two arrows do not point in the exact same direction.
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