Most of the money leaves the economy to pay for the automation which is not provided locally- and many of the robots are manufactured overseas in part or in whole anyway until robots start building robots due to labor costs.
So a small amount goes to construction locally. The job "savings" for automated is typically on the order of 100:1, so the 700 jobs saved might turn into 7 locally plus another couple dozen as overseas factories are also closed and their manufacturing is brought home.
Meanwhile trucks still carry the same amount of product over the roads. The factory uses the same amount of water, eletricity, etc. Police still have to patrol around the factory and provide police protection. The fire department still has to provide fire protection for the factory. But less money goes into the local economy to pay for these services because (currently) automated factories don't pay income taxes. So the remaining humans with income must subsidize the company by paying higher taxes to maintain the roads. By removing human workers, under our current set of tax laws, the company's billionaire owners (who probably live in another state or country) will have externalized almost all their costs onto the populace while offering almost no local employment (after construction ceases).
On the plus side, I also oppose helping NFL billionaires wanting new stadiums so we share that.
The wave of automation coming is going to more than decimate jobs. It's likely to destroy 90% of trucking jobs over the next 15 years. After 20-40 years of job destruction, we'll reach a new steady state. But the nearest comparable situations are the luddite situation and the horse situation. Most luddites were refused training and as a result died of starvation and exposure after the army killed a bunch of them during their revolt. And the horse population dropped by 95% in under 30 years after automation destroyed their job categories. Many of them were simply put to death tho the bulk was from restricted breeding since there was no profit in breeding as many horses.