NRS 403.590: Payment from general fund or levy of special tax for construction, maintenance or repair of county bridge.

1. Whenever it appears to the board of county commissioners that any road district is or would be unreasonably burdened by the expense of constructing or maintenance and repair of any bridge, the board may:

(a) Except as otherwise provided in subsection 2, cause all or a portion of the aggregate cost or expense to be paid out of the county general fund, or a portion out of that fund or out of any other county fund in which there is a surplus; or

(b) Levy a tax therefor, not to exceed one-fourth of 1 percent on the taxable property in the county, annually, until the amount appropriated is raised and paid.

2. A board of county commissioners must not cause or allow any portion of the Complete Streets Fund created pursuant to NRS 403.573 to be used for a purpose other than those set forth in NRS 403.575.