The decision will add $22,170,229—a 7.9 percent increase—to the total cost of the projects. This is a revised calculation from the $31 million estimate provided in October.
“We have gone through those numbers project by project and have whittled that number down to about $22 million," said David Greear, Travis County assistant public works director.
Bond projects under Proposition A—road, bridge and drainage projects—account for $12,449,918, or 13 percent, of the increased cost.
Critical safety projects—those that do not require voter approval—will increase by a total of $9,720,311, up 10 percent from the original cost estimate.
There are no anticipated cost increases to bond projects approved under Proposition B—park and land conservation projects—because they are not drainage-related.
The county's planning and budget office will present options for supplying an additional $22 million in December, Travis County Budget Director Travis Gatlin said.
“It is a cost increase," Travis County Judge Sarah Eckhardt said. "It’s outside of our control, but it is within our grasp, within our means [to fund].”