1916+1951 Walnut Grove Bridge over Sacramento River at Walnut Grove, CA

(Bridge Hunter broke Mar 22, 2023; Historic Bridges; Satellite)

Street View, Mar 2022, looking West

The high-water clearance is 21' (6.4m) and the low-water clearance is 24' (7.3m). [WalnutGroveMarina]

BridgeOfWeek, Photo by Mark Yashinsky, License: Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA)
[I thought a double-leaf, heel-trunnion bridge was rare. The only one I had seen before was in a railroad bridge upstream of the Soo Locks. But there are other bridges of this type on the Sacramento River. Mark gives the Isleton Bridge as an example. But a double-leaf is still rare, so I augmented the "bridgeStrauss" label with bridgeRare.]

Center for Sacramento History posted

The Walnut Grove Bridge, a Strauss type heel-trunnion bascule bridge, was constructed in 1951 over the Sacramento River to connect Locke and Walnut Grove to the west side of the river. 

(Sacramento Bee Collection,  1983/001/SBPM01246) 

Douglas Butler shared
Walnut Grove Strauss Bascule Bridge CA.

marinas

 

saccounty
The bridge was closed to vehicular traffic Mar 22-26, 2016, to repair its locking mechanisms. But pedestrians could use the north side during the closure.

Center for Sacramento History posted
This photo of the Walnut Grove Bridge, a Strauss-type heel-trunnion bascule bridge constructed in 1951, was featured in the Sacramento Bee on July 10, 1976. The bridge, which connects Locke and Walnut Grove to the west side of the Sacramento River, is seen here raised for the passenger ferry Harbor Emperor. The Bee reported that the ferry connected Sacramento to Fisherman's Wharf in San Francisco, taking the 400 passengers on an approximately 100 mile voyage at a leisurely 9 hours.
(Sacramento Bee Collection, 1983/001/SBPM01244)
Bridges Now and Then shared
Michael Schibly: The bridge has another leaf extending from this side of the river.

Bridges Now and Then commented on Michael's comment
You are correct.

A higher resolution copy of the above photo. The predecessor bridge was also a double-leaf, heel-trunnion bridge.

SacRoom
"The Walnut Grove Bridge was also known as the Strauss-Trunnion Basule Bridge of the two-leaf type. The first bids to build the bridge were accepted back in November 1900. Construction began on October 11, 1913. The Walnut Grove Bridge officially opened on Sunday, July 16, 1916."

More info on the 1916 bridge:

Strauss Bascule Bridge Company, Public domain, via Wikimedia Commons

0:23 video of it starting up