| State: | MD |
| Type: | MD |
| Route: | 665 |
| Alternate Name: | Aris T. Allen Boulevard |
| Map Custom: | yes |
| Map Notes: | Maryland Route 665 highlighted in red |
| Length Mi: | 2.68 |
| Length Round: | 2 |
| Established: | 1991 |
| Direction A: | West |
| Terminus A: | in Parole |
| Junction: | in Parole |
| Direction B: | East |
| Terminus B: | Bywater Road in Annapolis |
| Counties: | Anne Arundel |
| Previous Type: | MD |
| Previous Route: | 662 |
| Next Type: | MD |
| Next Route: | 667 |
Maryland Route 665 (MD 665) is a state highway in the U.S. state of Maryland. Known as Aris T. Allen Boulevard, the state highway runs 2.68miles from U.S. Route 50 (US 50)/US 301 in Parole east to Bywater Road and Forest Drive in Annapolis. MD 665 is a four-lane divided highway that connects US 50/US 301 and Interstate 97 (I-97) with MD 2 and the southern part of Annapolis and adjacent unincorporated communities on the Annapolis Neck in central Anne Arundel County. MD 665 was assigned to Forest Drive from MD 2 east to Bay Ridge Avenue circa 1950. The highway was relocated at its intersections with MD 387 and Bay Ridge Road in the 1960s. The Forest Drive iteration of MD 665 was removed from the state highway system in the late 1980s immediately before construction began on modern MD 665, which opened in 1992.
MD 665 begins at a directional interchange with US 50/US 301 and unsigned I-595 (John Hanson Highway) in Parole. The ramps from MD 665 to westbound US 50/US 301 and from eastbound US 50/US 301 to MD 665 tie into the ramps for I-97. The ramp from westbound US 50/US 301 to MD 665 forms a sweeping hairpin. MD 665 heads southeast as a four-lane freeway through a single-point urban interchange with Riva Road. The highway turns east and meets MD 2 (Solomons Island Road) at a partial cloverleaf interchange. There is also an exit ramp from westbound MD 665 to Annapolis Harbour Center Drive, which accesses the eponymous shopping center in the northwest quadrant of the interchange. Beyond MD 2, the state highway crosses Church Creek, enters the city of Annapolis, and becomes a four-lane divided highway with partial access control. After an intersection with Chinquapin Round Road, which is unsigned MD 665C, MD 665 reaches its eastern terminus at Bywater Road. The roadway continues southeast as Forest Drive, a four-lane road with a center turn lane. Forest Drive intersects MD 387 (Spa Road) and Bay Ridge Avenue on its course along the southern fringe of the city of Annapolis.MD 665 is a part of the National Highway System as a principal arterial for its entire length.
MD 665 was originally assigned to Forest Drive. The road existed as a county highway between MD 387 and Bay Ridge Avenue, which was then designated MD 181, by 1939. This highway was extended west to MD 2 (now MD 393) by 1946. MD 665 was assigned to the highway between MD 2 and MD 181 in 1950. MD 665 was routed along Chinquapin Round Road west of its rakish intersection with MD 387 and Neck Road east of MD 387. The whole highway was named Forest Drive in 1955, the same year the state highway was extended west to the present alignment of MD 2. The eastern end of MD 665 was relocated in 1964 to the current eastern end of Forest Drive at Bay Ridge Avenue and Hillsmere Drive. The old alignment along Forest Hills Avenue remained in the state highway system until 1972. MD 665 was relocated at its intersection with MD 387 to make the intersection less oblique in 1968. An old piece of Forest Drive in the southeast quadrant of the intersection is MD 788A (Old Forest Drive).
The original MD 665 was transferred from state maintenance to the city of Annapolis between 1987 and 1989. By 1989, modern MD 665, which was intended to mitigate congestion on the western part of Forest Drive, was under construction from US 50/US 301 southeast to MD 2. MD 665 opened from US 50/US 301 to MD 2 in 1991. The highway opened east to Forest Drive in April 1992. In October 1992, state officials named MD 665 for Aris T. Allen, a doctor and former member of the Maryland General Assembly who had died in 1991. When MD 665 was being planned in the early 1980s, Allen was instrumental in rerouting the highway to bypass an African-American neighborhood instead of slicing through and displacing its residents.
There are five existing auxiliary routes of MD 665 and one former auxiliary route.