Many urged city council members to take more time to consider the proposal before voting on it.
County Commission President Carl Lienhoop says the highway garage is in disrepair and needs to be rebuilt.
Kokomo Mayor Greg Goodnight says Howard County should not raise taxes even as it assumes more costs for emergency management and weights and measures.
Washington is considering annexing an area that is in the route of the I-69.
The expansion will increase Kokomo's population by about 1,100 residents bringing it to nearly 57,000.