Here is some Delta Bridge clearance information.

Mokelumne River Bridge (Highway 12): HW 8' / LW 11'
Little Potato Slough Bridge (Terminous/Highway 12). HW 35' / LW 38'
Bethel Island Bridge (non-opening) Hw 15' / LW 19'

Here's a photo of the Terminous Bridge taken by a Philpott? Any relation?

Name:  Terminous Bridge - Philpott.jpg
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