The Board of County Commissioners of Multnomah County shall:
Maintain, keep in good condition and repair and operate the bridges and their approaches. The lighting of the bridges and their approaches is a part of the duty to maintain and operate such bridges, and the board may enter into contracts for such lighting.
Operate, maintain and keep in good condition all parts of the bridges owned by the city or leased by the city or by the board of county commissioners.
The Board of County Commissioners of Multnomah County shall, at the cost and expense of the county:
Employ, hire and discharge, from time to time, agents, workers, laborers and servants, as it deems necessary in the conduct, maintenance, repair and operation of the bridges and their approaches.
Make needful rules and regulations for the operation and maintenance of the bridges, but such rules and regulations shall be subject to the exercise by the City of Portland of such police power and authority as the city has under its charter with respect to the bridges owned by the city.
The Board of County Commissioners of Multnomah County may enter into agreements or leases for the use by the public, for highway purposes and for the operation of street cars, of the upper highway deck of the bridges constructed across the Willamette River in Portland, by persons or corporations other than the City of Portland.
The Board of County Commissioners of Multnomah County may establish and collect tolls for the use of any bridge across the Willamette River that is: