But the estimated $2.2 billion project, which would also cover almost 13 miles in St. Louis County, will likely need a substantial portion of local funding if it hopes to move forward. The city’s portion of the project is estimated at $1.4 billion.

Voters may soon get the chance to make that commitment, at least in the city.

“The polling is favorable,” Slay told Castro on the bus tour following the Choice Neighborhood announcement.

Further details were sparse. Slay would not say how much the city would ask voters to raise sales taxes if a ballot question appear before voters in April. Nor would he say exactly what it would fund, saying some details are still being hashed out.

But he said an announcement with more details could come as soon as this week. A tax proposal could include funding for other city priorities and could come at the same time city residents are asked to help finance a new stadium for a Major League Soccer team. Backers of one stadium proposal have asked for $80 million from the city.