California’s inadequate transportation system costs motorists a total of $53.6 billion per year in the form of congestion-related delays, crashes, and extra costs of operating a vehicle, according to a report released Monday.

The study by Trip, a nonprofit transportation research group, is called “California Transportation by the Numbers: Meeting the State’s Need for Safe, Smooth and Efficient Mobility,” and looks at road and bridge conditions, congestion, economic development, highway safety, and transportation funding.

It found that the cost of transportation inadequacies to the average motorist among the state’s major metropolitan areas is highest in the Los Angeles-Long Beach-Santa Ana region, at $2,826 annually. This is the result of poorly maintained roads, congestion or a lack of safety features.

The report says 37 percent of California roads are in poor condition and 25 percent of bridges show significant deterioration. Traffic crashes “in which roadway design was likely a contributing factor” cost Californians $7.3 billion a year in total in insurance and other costs, and lost household and workplace productivity.

TRIP says more transportation infrastructure investment is needed.

Trade, transportation, and manufacturing reporter Paul Eakins can be reached at [email protected]. Follow him on Twitter @Pauleakins.