Wisconsin State Route 23 runs east-west across Marquette County. This is the main east-west highway across Marquette County. This runs from the Marquette/Adams County Line, near Briggsville, to the Marquette/Green Lake County Line, west of Princeton. WI St Rt 23 passes through the following towns in Marquette County. Briggsville Endeavor Montello WI St Rt 23 is multi-plexed in Marquette County. Interstate 39, near Endeavor to near Packwaukee. U.S. Rt. 51, near Endeavor to near Packwaukee.
