Two years later, county officials expressed concerns over the delay of state and federal approval and considered building the freeway without the flood control component of the project. The county hoped to build both projects at the same time to save $4 million (about $ in dollars) in costs. This was since it was estimated to require three years' worth of legislation to be accomplished in a single year by the county board of supervisors in order to use the Interstate Highway System funds that were set to expire in 1972. Congress approved the project, but in late 1968, the target date for completion of the system would be pushed back two years.