Bridge Condition Trends in California

Between 2015 and 2025, bridge conditions in California have improved. The share of bridges rated poor went from 7.3% to 4.9% — a change of -2.4 percentage points.

Condition Summary

YearTotalGoodFairPoorPoor %
201525,31813,32710,1341,8577.3%
202025,76312,89811,3291,5366.0%
202525,97512,23912,4521,2844.9%

Most Improved Counties in California

CountyPoor % (2015)Poor % (2025)Change
Madera29.0%9.6%-19.4 pp
Yuba20.2%7.1%-13.1 pp
Yolo11.4%4.4%-7.0 pp
Napa10.9%5.0%-5.9 pp
Plumas8.9%3.0%-5.8 pp
Calaveras11.2%5.6%-5.7 pp
Lassen13.0%7.4%-5.6 pp
Ventura7.2%2.4%-4.8 pp
Tulare7.7%3.0%-4.8 pp
Sonoma10.0%5.2%-4.7 pp

Counties Where Conditions Worsened

CountyPoor % (2015)Poor % (2025)Change
Amador9.3%24.6%+15.3 pp
Sutter5.2%13.2%+8.0 pp
San Benito4.2%9.2%+5.0 pp
San Francisco9.9%13.9%+4.0 pp
San Joaquin5.8%9.6%+3.8 pp
Nevada10.5%13.9%+3.4 pp
Alpine3.3%6.1%+2.7 pp
Solano4.0%6.4%+2.5 pp
Santa Cruz14.3%16.5%+2.2 pp
Inyo1.5%2.9%+1.4 pp

View all California bridges · National trends