Since 1952 bridges near this site have served as the gateway to western Nevada County. This 1924 span was the first concrete bridge at this site and features a Roman style single arch design, constructed in a continuous pour method.
The Colfax . . . — — Map (db m76345) HM
"[From Greenhorn Creek] we past [sic] up a steep ascent (doubled teamed) & came to the forks of the road. The right goes by the way of Yuba & left straight on by Johnsons [Ranch] We taken [sic] the left." - Augustus Ripley Burbank, Sep . . . — — Map (db m149130) HM