Railing on Roadways Elevated by Retaining Walls

Roadways elevated on retaining walls that are in-line with the edge of bridge slab
or edge of traveled way
 require bridge railing, extended along the retaining wall until the drop-off terminates. The bridge railing and side slopes must be protected with the appropriate metal beam guard fence and end treatment, in accordance with the Roadway Design Manual.
Roadways elevated on retaining walls that are offset from the edge of bridge slab require one of the following railing options:
  • Bridge railing placed in-line with the edge of bridge slab
    or edge of traveled way
    , extended along the roadway until the retaining wall drop-off terminates. The bridge railing and side slopes must be protected with the appropriate metal beam guard fence and end treatment, in accordance with the Roadway Design Manual.
  • Metal beam guard fence and end treatment attached to bridge railing on the bridge
    or continuous the full length of the retaining wall
     and extended along the edge of roadway until the retaining wall dropoff terminates and side slopes are protected in accordance with the Roadway Design Manual. Slope requirements behind the metal beam guard fence must also be met.
  • Metal beam guard fence and end treatment attached to the bridge railing on the bridge at the edge of roadway. Additionally, bridge railing mounted at the face of the retaining wall, beginning behind the metal beam guard fence and extending until the retaining wall drop-off terminates. This bridge railing and the side slopes must also be protected with the appropriate metal beam guard fence and end treatment, in accordance with the Roadway Design Manual.
  • Where raised sidewalks are between the traveled way and the retaining wall, refer to Chapter 3 for requirements.