California’s transportation department, Caltrans, will spend $1.1 billion over 30 years to improve sidewalks under a plan submitted Tuesday to a federal judge.

The deal, which goes before U.S. District Judge Saundra Armstrong for approval, would resolve two class actions that advocates for the disabled filed against Caltrans — one in federal court in 2006 and the other in Alameda County Superior Court in 2008.