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Armour Ranch Road Bridge Armour Ranch Road Bridge Emergency RepairsEmergency Repairs

SB County Project Number SB County Project Number 01STRM R01501STRM R015

Storm Damage caused during March 5th 2001 storm.

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Damage DescriptionDamage Description

Scour hole discovered behind grouted rip rap bridge abutment protection.

Scour hole caused by inadequate scour protection.

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Inspection on 10/24/01 revealed dangerous situation prompting need for immediate action.

Section View

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Construction Began 10/29/2001

•Breakup existing Rock Riprap over scour hole.

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Exposed Bridge Piles

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REPAIRS

•Remove undermined Rock riprap

•Grout behind bridge piles

•Fill void with rock and concrete

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Scour Protection Toe Extension

•Extend toe 5 feet below existing depth.

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Plan View

Scour protection toe extension required to prevent future losses due to scour during storm events.

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Filling toe trench.

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Placing rock in trench.

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Placing concrete in rock filled toe trench.

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New and improved rock riprap bridge pile scour protection.

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Finished Construction 11/7/2001.

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Project FundingProject Funding

Office of Emergency Services• $20,770 budgeted• Actual Construction Cost = $93,542

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The EndThe End