Wednesday, November 10, 2010

San Antonio Creek Bridges

Two bridges are under construction on San Antonio Creek, a major tributary to the Ventura River. Both have received fisheries restoration grants for the potential benefits of barrier removal.

1) Old Creek Rd Bridge

This is the construction that is visible at the 'Arnaz Grade' on highway 33. Ventura County received $1M for steelhead enhancement to replace the low water crossing over San Antonio Creek on Old Creek Rd. The new $2.5M bridge on a dead-end road will serve approximately 35 residents, and moved forward despite numerous comments that cheaper alternatives existed. (A short emergency right-of-way could have provided access to nearby Sulphur Mountain Rd) "According to county specifications, the bridge will be a 210-foot-long, two-span, cast-in-place concrete box girder bridge designed to clear the 100-year floodplain."

According to Ventura County documents the total cost of this project is over $3.5M. From Board of Supervisors meeting this week, a change order for an additional $40k was approved for biological consulting after the endangered red-legged frog was found at the construction site.

In the news: Old Creek Road getting safety makeover with $2.5M bridge


2) Lion Creek Bridge

Lion Creek is a tributary to San Antonio Creek, and is ephemeral in the lower reach in some years, with perennial water in the upper reaches of the canyon.

According to CDFG documents, "this project improves fish access for adult and juvenile steelhead to 9.5 miles of upstream habitat in Lion Creek, which is a tributary to San Antonio Creek in Ventura County. The project is collaboration between private, non-profit, local, state, and federal agencies. It includes demolition of an existing low water crossing, which was replaced with an 85 ft long X 13.75 ft wide Railspan steel flatcar bridge. Steelhead are now able to access medium to high quality habitat in the upper reaches of Lion Creek, thereby facilitating migration for spawning adults and over-summering juveniles.

More information and photos are here:

Project managed by South Coast Habitat Restoration

View Ventura River in a larger map