The Missouri Senate has advanced a proposed 1-cent sales tax to fund state and local transportation projects.

The tax would need approval by Missouri voters and would automatically go to another statewide vote after 10 years. It’s expected to generate nearly $8 billion over a decade, with 10 percent dedicated to local transportation needs.

Senators gave the measure first-round approval Wednesday.

The legislation requires the Highways and Transportation Commission to develop a list of projects before the tax goes on the ballot. The commission would prepare an annual status report for the governor and the Legislature.

When the increased sales tax is in effect, Missouri’s gas tax would be frozen and existing roads could not be become toll roads.