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Hydraulics Engineering

 

Strategies for Developing a Plan of Action

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Oregon POA as described below

Box 1: Scour Assessment (Item 113) shows the structure is scour critical?

Box 2: Is the foundation material highly erodible?

Box 3: Have scour countermeasures been installed?

Box 4 Bent/Pier soundings during high water events.
Maintenance personnel check during high water events
Diver inspection of bent located in non-wadable water after high water events or at least annually
Check and update the x-channel profile at least every 2 years

Box 5: Is there evidence of on-site localized scour?

Box 6: Maintenance personnel check during high water events
Diver inspections annually Check and update the x-channel profile at least every 4 years

Box 7: The bridge has a history of drift accumulation

Box 8: Maintenance personnel check during high water events
Diver inspection of bents located in non-wadable water at least every 2 years
Check and update the x-channel profile at least every 4 years


Box 1 to Box 2

Box 2 to Box 3, if N to Box 5

Box 3 to Box 4, if N to Box 5

Box 5 if Y to Box 6, if N to Box 7

Box 7 if Y to Box 6, if N to Box 8

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Related Features

Contact:

Dave Henderson
Office of Bridges and Structures
202-493-0520
dave.henderson@dot.gov


Cynthia Nurmi
Resource Center (Atlanta)
404-562-3908
cynthia.nurmi@dot.gov


Joe Krolak
Office of Bridges and Structures
202-366-4611
joe.krolak@dot.gov

Updated: 04/07/2011
 

FHWA
United States Department of Transportation - Federal Highway Administration