The bridge ahead is narrower than the lanes leading to it. There is less shoulder, or none, and sometimes barely two cars’ width.
Slow down, hold your lane precisely, and be ready to yield if the bridge is effectively one lane. Meet wide loads before or after the bridge, not on it.
The road’s shoulders shrug and disappear at the bridge. Yours is the lane, the whole lane, and nothing but the lane.
Passing or hugging the center line on the bridge. Narrow bridges are where mirrors meet.
Signs that live in the same family, or get confused with this one.
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