Salt Lake County voters will decide Nov. 3 whether to approve a $128 million parks and recreation bond. The 30 proposed projects include finishing trail expansions at Big Cottonwood Regional Park near Sandy.

The bond would cover new trails, upgraded facilities and two new recreation centers, according to the county's proposed bond projects page.

A 2016 bond that built the Draper Recreation Center and Bingham Regional Park is expiring. The new bond would replace it on tax bills, keeping rates flat.

"You wouldn't see an increase or decrease either way because it's just replacing an old property tax line," Eric Biggart, communication director for the Salt Lake County Mayor's Office, told Fox 13.

The county's bond page estimates the annual cost at $16.39 for a primary residence at the county average value of $658,000. That works out to $1.37 a month. Because the new bond replaces the expiring one, the county projects a net property tax increase of $0 for the average home.

There is a separate cost to consider. Average annual operational and maintenance expenses for the new facilities are projected at $4.7 million over their first 10 years. The county said it will determine during its next budget cycle whether those costs require budget cuts or a tax increase.

One project drawing attention is the proposed $21 million Union Park Recreation Center in Midvale, one of the bond's most expensive items. Preliminary plans on the county website show the center built on two of three softball fields at the park, as Fox 13 first reported.

That alarmed the Mt. Olympus Fastpitch Softball League, which has nearly 300 girls playing at Union Park. Madelyn Corey, a coach in the league, told Fox 13 the fields are among the only dedicated girls' softball fields on the east side of the county north of Draper.

The Salt Lake County Parks and Recreation Department said in a statement to Fox 13 that the drawings reflect a preliminary concept proposed by Midvale City. The exact location is not set, the department said. If the bond passes, formal planning with architects and stakeholders would begin, and the county said it would work with league leadership to address park impacts.

The bond would authorize general obligation bonds maturing in no more than 11 years. The county has been planning the package for nearly a decade, according to Biggart.

Election Day is Tuesday, Nov. 3.