Deep DiveTL;DR
- California ranks worst in the nation for road quality with a roughness index of 153.4 and 42% of lane-miles in poor condition, according to MoneyGeek's analysis of FHWA data.
- The state spends $24 billion a year on highways, the second-largest highway budget in the country, yet roads keep getting worse. Caltrans spends $120 million annually on pothole repairs alone.
- A 25% tariff on imported tires took effect in April 2025, pushing replacement costs up 10% or more. California drivers who already face the worst roads now pay even more to fix the damage.
Key Numbers at a Glance
| Stat | Number | Source | Date |
|---|---|---|---|
| Road roughness index (worst in U.S.) | 153.4 | MoneyGeek / FHWA | 2025 |
| Roads in poor condition | 42% | MoneyGeek / FHWA | 2025 |
| Annual highway budget | $24 billion | California LAO | 2025-26 |
| Total transportation budget | $31 billion | California LAO | 2025-26 |
| Spending per lane mile | $19,980 | MoneyGeek / FHWA | 2025 |
| Annual Caltrans pothole repair cost | $120 million | RoadVision AI / Caltrans | 2025 |
| Tariff on imported tires | 25% | Federal Register | April 2025 |
Last verified: April 2026
You are driving on the worst roads in America. That is not an opinion. It is federal data.
California's road roughness index of 153.4 is the highest in the nation, according to MoneyGeek's analysis of Federal Highway Administration data. Forty-two percent of the state's lane-miles are rated poor. No other state comes close.
Where the Money Goes
California's 2025-26 transportation budget totals $31 billion, including $24 billion for highways. That is the second-largest highway budget in the country behind Texas.
Yet California spends just $19,980 per lane mile, ranking 42nd nationally for spending intensity. The state has so many lane-miles that even a massive budget gets spread thin.
Caltrans spends $120 million annually on pothole repairs. That is a lot of money for a problem that is not getting better. The issue is reactive maintenance: fixing potholes after they form instead of preventing them.
Compare that to Georgia, which spends $15,995 per lane mile and has the third-best roads in the country with only 4% in poor condition. Georgia invests in preventive maintenance. California does not, at least not enough.
What This Costs California Drivers
The national average for extra vehicle costs from rough roads is $400 per year. Urban drivers in large metros pay up to $750, according to TRIP transportation research.
California drivers are at the upper end of that range. With the worst road quality in the nation and major metros like Los Angeles, San Francisco (ranked #28 worst for road damage repairs by Pep Boys), and San Diego, the state's drivers face:
- Accelerated tire wear from rough pavement
- More frequent alignment corrections
- Suspension and steering damage from potholes
- Higher fuel consumption on uneven road surfaces
The Tariff Hit
A 25% Section 232 tariff on imported passenger and light truck tires took effect in April 2025. Chinese tires now face a 150% effective tariff rate. Thai imports, the largest source at 35.3 million units, face 37%.
For California drivers who already burn through tires faster than drivers in any other state, this is a direct cost increase. A mid-range all-season tire that cost $140 to $180 in 2024 now runs $155 to $200. Multiply that by four tires and the more frequent replacement cycle California's roads demand, and the math adds up fast.
The Worst Corridors
If you drive in California, you probably have your own mental map of the worst roads. But the data confirms some patterns:
- LA metro area has some of the highest-volume roads in the country running over pavement that is deteriorating faster than it can be repaired
- Bay Area ranks #28 worst nationally for road-related vehicle repairs (Pep Boys data)
- Central Valley corridors between Sacramento and Bakersfield see heavy truck traffic that accelerates pavement breakdown
- Southern California freeways combine heat stress, heavy traffic, and aging infrastructure
What You Should Do
- Check tire pressure every 2 weeks, not monthly. California's heat fluctuations cause pressure swings that increase blowout risk on rough pavement.
- Get alignment checked after any noticeable pothole hit. Do not wait for uneven wear to appear. By then you have already lost tire life.
- Buy tires now if you are within 6 months of needing them. Tariff-driven price increases are still moving through the supply chain.
- Report potholes via the Caltrans maintenance request system or your city's 311 service. Reported potholes get prioritized.
- Consider comprehensive plus collision coverage if you have not reviewed your policy recently. Pothole damage is classified as collision, not comprehensive.
Part of the "America's Most Expensive Roads" series. Read the national overview for state-by-state rankings and the full tariff breakdown.