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Hurt on the Broadway Curve? The Busiest Miles in Arizona.
More than 300,000 vehicles cross the Broadway Curve on an average weekday, the highest volume of any stretch of Arizona freeway.
Arizona finished a $776 million rebuild of these 11 miles in spring 2025, the largest urban freeway project in ADOT history.
The rebuild added lanes and calmed some old conflict points, and the crashes did not stop.
They changed shape.
A serious Broadway Curve claim runs on fast evidence work, a real coverage map, and Arizona rules that favor the injured.
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- The Curve carries 300,000+ vehicles per weekday between the I-17 Split and Loop 202
- Multi-vehicle crashes here get sorted percentage by percentage under Arizona comparative fault
- Arizona caps no damages, and commercial freight adds deep-policy defendants
- Freeway camera recordings are not reliably kept; vehicle data and dashcams decide cases
- Two years to file, and evidence lives on much shorter clocks
What the $776 Million Broadway Curve Rebuild Could Not Change
The Broadway Curve Improvement Project rebuilt I-10 between the I-17 Split and the Loop 202 Santan/South Mountain interchange: new general and HOV lanes, collector-distributor roads separating local traffic from through traffic near the US 60 interchange, and rebuilt bridges across the corridor.[1] Construction ran from summer 2021 to spring 2025.
What no project changes is the load. This is the funnel between downtown Phoenix, the East Valley, and Sky Harbor, carrying commuters, airport traffic, and a heavy share of the cross-country freight that I-10 moves through Arizona. ADOT projects the volume to grow another 25 percent by 2040, roughly 75,000 more vehicles a day. Speed differentials at the interchanges, lane changes across five and six lanes, and congestion waves that arrive without warning keep producing the corridor's signature crash: the multi-vehicle, chain-reaction pileup.
Where the Broadway Curve's Crashes Concentrate
The I-17 Split
The corridor's north anchor, where I-10 and I-17 exchange traffic across some of the heaviest weaving movements in the state. Merging crashes and sideswipes cluster here, and fault in a weaving-lane crash is exactly the kind of dispute Arizona's comparative system litigates.
The US 60 Interchange
Where the Superstition Freeway pours the East Valley into I-10. The rebuild's collector-distributor roads reduced some crossing conflicts, and the volume still makes this the corridor's busiest merge. Rear-end chains form in the deceleration waves upstream of the ramps.
The Curve Itself and SR-143
The bend at Broadway Road that named the corridor, with SR-143 feeding airport traffic into the flow. Speed differential between through lanes and exiting traffic is the recurring mechanism, and trucks taking the curve under load add the underride and jackknife cases that turn severe.
Fatal and catastrophic outcomes on this stretch join the statewide pattern: Arizona recorded 1,228 traffic deaths in 2024, with Maricopa County carrying the largest share.[2]
How a Multi-Vehicle Broadway Curve Pileup Becomes a Winnable Claim
Chain-reaction crashes are fault-allocation fights. Arizona sorts them vehicle by vehicle: each defendant pays its own percentage under the several-liability statute, a defendant can point at drivers who were never sued, and your own percentage, if any, comes off the top rather than barring the claim.[3] The practical work is reconstructing the chain: who stopped, who never braked, who was following at freeway speed with a truck's stopping distance.
Evidence is the constraint. ADOT's freeway management cameras exist to move traffic, and recordings are not reliably preserved, so the surviving proof usually comes from event data recorders in the vehicles, dashcams, DPS scene documentation, and witnesses found before they scatter. In truck-involved pileups, the carrier's own records join the list, and those sit on short retention schedules. The rapid-preservation playbook is the same one our statewide crash practice runs on every serious freeway case.
Commercial defendants change the money. A pileup with a freight truck in the chain brings policies layered into the millions, which matters because Arizona caps no damages and a catastrophic claim is valued on the full harm. What those claims turn on is covered in our guide to what an Arizona injury case is worth.