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Guard Rails at Approaches to Bridges

Guard Rails at Approaches to Bridges

(OP)
Dear all, what is the ideal place to locate guard rails at approaches to bridges and why? I have seen it located in line with the bridge parapet and also in line with the kerb separating the bridge walkway from the roadway.

Thanks

RE: Guard Rails at Approaches to Bridges

It's a pedestrian/bicycle safety issue. In the US, highway guard rails (or guide rails, depending on an agency's terminology) line up with the bridge parapet or the bridge rail on roadways that prohibit pedestrians & bicycles. These are generally high speed roadways such as interstates. Sometimes these roadways have trails for pedestrians & bicycles. In which case the railing is at the front of the sidewalk/walkway, in line with the curb. Sometimes, a bridge doesn't have a raised sidewalk/walkway therefore requiring a barrier between pedestrians and vehicles.

RE: Guard Rails at Approaches to Bridges

If the bridge has a curb, then the face of guardrail must match the face of the curb, per Roadside Design Guide.

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