Contra Costa County, California Bridges: Iron Horse Trail POC across Ygnacio Valley Road

February 2014 (37.90707 Degrees, -122.05778 Degrees) Ygnacio Valley Road POC

The next bridge on the Iron Horse Hiking Trail is a more traditional steel arch. The Ygnacio Valley Road Pedestrian Overcrossing is a 550 ft long viaduct with a 136 ft long tied arch main span and with truncated deck arches for the side spans.

This bridge was built in 1998 by C. A. Rasmussen and designed by Santina and Thompson. However, unlike yesterday's Treat Blvd OC, there are few postings on the internet other than the always reliable Bridgehunter Website with photos by Craig Philpott.   

Today's bridge is more utilitarian than the Treat Blvd POC. The arch ribs are parallel steel box girders with lots of tubular steel cross-braces between the ribs.  The deck is wider but it's hanging from steel rods with turnbuckles. The dark fence imparts a feeling of claustrophobia while crossing over the bridge.

Contra Costa County, California Bridges: Iron Horse Trail POC across Ygnacio Valley Road by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.