Long traffic queues have formed at the new bridge over Breiðholtsbraut — a major road linking Reykjavík and Kópavogi — within just days of its opening, confirming fears that the signalised junction design would slow traffic significantly. The congestion has frustrated commuters and reignited a planning dispute between the two municipalities.
Key takeaways
- Traffic queues appeared at the new Breiðholtsbraut bridge almost immediately after it opened to vehicles.
- Construction on the site took around three years.
- Reykjavík City insisted on a signalised junction rather than a grade-separated interchange, citing less environmental disruption and better noise conditions.
- Kópavogur warned the signal-controlled design would slow traffic — and that prediction has now proved correct.
Why is there a new bridge on Breiðholtsbraut?
Breiðholtsbraut is a busy arterial road that runs through the border zone between Reykjavík and the neighbouring municipality of Kópavogur — two of Iceland’s most populated areas. The bridge project, which took roughly three years to complete, was intended to improve traffic flow at a well-known bottleneck in the capital region.
Originally, the plan called for a full grade-separated interchange — the kind where roads cross on different levels, so vehicles never have to stop for a signal. But Reykjavík City intervened and pushed for signalised intersections instead. The city’s argument was practical: traffic lights would mean less construction disturbance for nearby residents and a quieter acoustic environment once the work was done. On those terms it was a reasonable position. As a trade-off for people who live right beside the road, it even made some sense.
Kópavogur’s municipal government disagreed from the start, however. Local officials there argued plainly that signal-controlled junctions would create significant delays and that the grade-separated design was simply the better option for keeping vehicles moving. That disagreement was never fully resolved before the bridge opened.
What the traffic queues reveal about the dispute
Peak-hour queues appeared during the first week after opening, and they have been long enough to generate real frustration among drivers. For anyone who commutes between Kópavogur and Reykjavík — which describes a large share of the capital region’s working population — adding even a few minutes of stationary waiting to the daily drive is genuinely irritating. I live in Reykjavík and drive Breiðholtsbraut-adjacent routes regularly; in a city where the morning rush already compresses into a tight window, a new pinch point on a freshly built bridge feels like a poor return on three years of construction disruption.
Kópavogur’s mayor, Ásdís Kristjánsdóttir, moved quickly. At a municipal council meeting this week she formally acknowledged that the junction design needs to be reviewed to ensure the best possible traffic flow. She has already contacted the Vegagerðin (Icelandic Road and Coastal Administration), pointing out that the signal timings are poorly calibrated — essentially, the lights are not yet set up in a way that reflects real traffic patterns. That is at least a fixable short-term problem, even if the deeper design question remains open.
Can the signal timing fix the queues?
Possibly, but only up to a point. Traffic signal optimisation is a legitimate tool and getting the timing wrong at a new junction is a common teething issue — signals are often set conservatively at first and then tuned as real-world traffic data comes in. If the queues are partly a calibration problem, adjustments by Vegagerðin could reduce wait times meaningfully in the coming weeks.
But Kópavogur’s original objection was structural, not just about timing. Signal-controlled junctions, no matter how well tuned, cannot move as many vehicles per hour as a grade-separated interchange where traffic never has to stop. If peak-hour demand at this location is high enough — and three years of construction on the site suggests it is — then even a perfectly calibrated set of lights may still produce queues during rush hour. That is the harder problem, and it is not one signal tweaks alone can solve.
So the situation right now is that Reykjavík got the quieter, less disruptive junction it wanted, Kópavogur’s warnings appear to be coming true, and commuters are sitting in traffic on a brand-new bridge. Whether this leads to a genuine redesign, or whether Vegagerðin’s signal adjustments prove sufficient, will become clearer over the next few weeks as the road settles into normal use.
Frequently asked questions
Where exactly is the new bridge causing traffic queues?
The bridge crosses Breiðholtsbraut, a main road that runs through the boundary area between Reykjavík and Kópavogur in the capital region of Iceland. It is a key commuter route for people travelling between the two municipalities.
Why did Reykjavík choose signals over a grade-separated interchange?
Reykjavík City argued that a signalised junction would cause less disruption to the surrounding environment during and after construction, and would result in a better noise environment for nearby residents. The city formally requested the change from the original grade-separated design.
What is Kópavogur doing about the traffic queues?
Mayor Ásdís Kristjánsdóttir has called for a review of the junction design and has already contacted the Icelandic Road and Coastal Administration (Vegagerðin) about the signal timings, which she says are poorly calibrated. The municipality wants changes to improve traffic flow as soon as possible.
How long did construction of the new bridge take?
Work on the site took approximately three years. The bridge only opened to traffic in the week leading up to the report — making the immediate appearance of peak-hour queues a particularly visible problem.
Could the traffic problem be temporary?
Signal timing issues at new junctions are common and can often be improved through adjustments, which Vegagerðin is now being asked to carry out. However, Kópavogur’s underlying concern is structural — that signal-controlled junctions cannot match the throughput of a grade-separated interchange — so congestion may persist even after the lights are better calibrated.
