· (1) High-Level option: Elevated freeway over or immediately adjacent to existing Railroad, permitting lower lying commercial and industrial buildings to remain in place under the facility.
· (2) Low-Level option: Freeway generally at or below the Railway, located immediately adjacent to the Railroad. .
· (3) Freeway below the Railroad grade, with the Railroad and transit facilities supported on a structure over the Freeway.
· (4) Freeway approximating the existing Railroad alignment and grade, with the Railroad and transit constructed beneath the Project.
Options 1 and 2 would preserve the existing railroad, while options 3 and 4 would remove and replace it.
It recommended option #2: a “low level” route alongside the existing railroad.
It deleted the reversible median roadway that was a feature of the 1964 North Central Freeway plan (but not its connecting I-95 Northeast Freeway), and that for Virginia’s I-95 (I-395) Shirley Highway.
It was further recommended that the depressed portion in Brookland near Catholic University of America be covered (with what’s been called a lid, cap, or deck), effectively making that segment a cut and cover tunnel, with the space atop devoted to new housing and park and recreation space. It includes an illustration showing such a highway cover extending from the north end of the main Catholic University of America campus, southwards of the Brookland/CUA train station.
Such a cut and cover tunnel would additionally shield the area from noise and pollution.