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Last modified
1/25/2010 6:45:23 PM
Creation date
10/5/2006 12:21:34 AM
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Template:
Floodplain Documents
County
Statewide
Basin
Statewide
Title
Interim Procedures for Evaluating Scour at Bridges
Date
9/1/1988
Prepared By
Federal Highway Administration
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />I- <br />I- <br />'I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />EXHIBIT IV-A, I of 2 <br /> <br />FIELD REVIEW CHECKLIST <br /> <br />Oate: <br /> <br />Crew: <br /> <br />Bridge No. Route: County: <br />Stream: Location: <br />Bench Mark Elev.: Location: <br />Stationing': <br /> <br />A. Bridge: <br />1. Evidence of scour at bridge: <br /> <br />a. Ahutlllents tilting'/movinq in <br /> <br />b. Slopes washing in/sloughing <br /> <br />c. Scour holes near abutments/piers <br /> <br />d. Bed deposits downstream <br /> <br />e. Damage to riprap/abutments/piers <br /> <br />f. Depth of footings <br /> <br />g. Debris <br /> <br />2. Survey information <br /> <br />a. Cross-section under bridge <br /> <br />b. Road profile (overtopping elevation) <br /> <br />c. Low member <br /> <br />d. Highwater mark <br />e. Water elevation <br /> <br />f. Check elevation of abutments/footing's <br /> <br />3. Scour countermeasures <br /> <br />a. Riprap inplace <br />1) Extent <br />2) Approximate size <br />b. Feasibility of monitoring during high flow <br />1) Rod/pole/weight from deck <br />2) Fixed monitoring-device <br />c. Feasibility of adding' riprap or other scour countermeasures <br /> <br />8-15 <br /> <br />" <br />
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