
(Image from wikipedia.)
The Broadway Bridge spans the Harlem River, connecting the Inwood neighborhood in Manhattan with Marble Hill, a Manhattan neighborhood that is often thought of as being part of the Bronx. It is a short flat bridge with no steep hills, or exit and entry gates. It is open to pedestrians and bikes 24 hours a day and functions almost like a street.
Cycling and Pedestrian Facilities

There are sidewalks on both sides of the bridge and there is virtually no climb associated with using this bridge. It is possible for a cyclist to ride in the roadway, although the roadbed is composed of a metal grate:

Flowing with the automobile traffic, one should use the east side sidewalk when traveling northbound and the west side sidewalk when traveling southbound. Officially, one must walk his or her bike when using the sidewalk.
East Side Sidewalk

The east side (northbound) sidewalk.

For northbound travel, enter by surmounting the curb at Broadway and Ninth Avenue (or just stay in traffic lane).

You have two choices to exit. You will find a curb cut at the southeast corner of W. 225th Street and Broadway, but it can be crowded with pedestrians from the nearby mall and people exiting the subway.

The other alternative is to exit between the fence and the subway stairs (where the sawhorses are set up), but there's no curb cut there.
West Side Sidewalk

The west side (southbound) sidewalk.

For southbound travel, enter at the curb cut at the southwest corner of Broadway and W. 225th Street.

Exit at the curb cut associated with New York Presbyterian Hospital's garage driveway or earlier (pictured) if you don't mind jumping a short curb.
Mass Transit
The Broadway Bridge carries the elevated 1 Train, Bx7 and Bx20 local buses and BxM1 express bus. The bridge is adjacent to Metro-North Railroad's Marble Hill station and, as noted above, the 225th Street Station on the 1 Train.
History
The Broadway Bridge was built in 1895. It's a historic landmark and whose famous profile represents the neighborhoods of Marble Hill and Inwood.
Links
- Broadway Bridge (Manhattan) Wikipedia.
- NYC Bridge Wiki: Broadway Bridge Bike and pedestrian access.
- Broadway Bridge at TransAlt.