The draw of the Contra Costa County highway bridge, mile 1.0, and Union Pacific Railroad bridge, mile 1.1, both near Martinez, shall open on signal if at least 24 hours notice is given.
Code of Federal Regulations
[CGD 82-025, 49 FR 17452, Apr. 24, 1984, as amended by CGD 12-85-02, 50 FR 20758, May 20, 1985]