Passing a Cyclist on a Narrow Bridge Approach
You are driving a pickup truck east on a two-lane road with a 45 mph limit. Ahead, the lane narrows onto a bridge with no shoulder and concrete barriers on both sides; the bridge is about 300 feet long. A cyclist is riding east in your lane at about 15 mph, near the right edge. You are doing 45 mph and closing on the cyclist. Oncoming traffic is light but there is a car approaching from the west about 500 feet away, traveling toward you. You can see the cyclist's helmet and a rear light. The bridge begins about 150 feet ahead of you.
1. Can you pass the cyclist before the bridge?
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Almost certainly not safely. Run the numbers:
- You are 150 feet from the bridge and closing at 45 mph (about 66 feet per second). You reach the bridge in roughly 2–3 seconds.
- The cyclist is ahead of you in the same lane and must be passed with a safe lateral distance - Washington requires at least 3 feet when passing a cyclist, and more at higher speeds.
- The bridge has no shoulder and concrete barriers, so there is no room to give 3 feet without moving into the oncoming lane.
- An oncoming car is about 500 feet away and closing. Passing on the bridge would put you in its lane.
So passing before the bridge is not feasible, and passing on the bridge is worse. The correct action is to slow and stay behind the cyclist until you are across the bridge and have a clear, wide gap with no oncoming traffic.
2. What is the safest way to handle the approach to the bridge?
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- Slow down early to the cyclist's speed or slightly below, well before the bridge, so you are not forced into a late decision at the barrier.
- Hold a steady position behind the cyclist with a gap that lets you react if they swerve - cyclists often move left to avoid debris, grates, or barrier seams on bridges.
- Do not crowd or honk. A close truck and a horn can startle a cyclist into a bad line near a barrier.
- Wait for the far side. Once across the bridge, if the oncoming car has passed and you have a clear view, pass with at least 3 feet of clearance (more at 45 mph) and do not return to the lane until you can see the cyclist in your mirror.
The bridge is a no-pass zone in practice, even if it is not marked as one.
3. The oncoming car passes, but just as you begin to pass, the cyclist drifts left toward the center of the lane. What do you do?
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Abort the pass. Brake and drop back rather than trying to squeeze by.
- The cyclist may be moving left to avoid a hazard you cannot see - a pothole, a drain grate, glass, or a barrier seam.
- If you commit while they drift left, you have narrowed the lateral gap and may be forced toward the oncoming lane or the barrier.
- A pass is only safe if you can complete it with margin; a drifting cyclist removes that margin.
After dropping back, re-assess: wait for the cyclist to settle into a steady line, confirm no oncoming traffic, and then pass with full clearance. If the cyclist continues to drift, stay behind - arriving a minute later is the correct trade.