Scour Critical Bridges in New York

864 bridges in New York at risk from water erosion around foundations.

Scour Critical Bridges

Scour is the erosion of soil and rock around a bridge's foundation caused by moving water. When foundations are exposed or undermined, a bridge can collapse even if its deck and superstructure are in good condition. Scour is the leading cause of bridge failures in the US. These 864 bridges in New York have been identified as vulnerable to scour damage.

Clear
Bridge State Scour Status Condition Year Built ADT
WEST BRANCH BEER KILL New York Scour Critical, Countermeasures Installed Poor 1965 -
ROUND LAKE OUTLET New York Scour Critical, Countermeasures Installed Poor 1995 -
Wiccopee Creek New York Scour Critical, Countermeasures Installed Good 2021 -
Quassaic Creek New York Scour Critical, Countermeasures Installed Poor 1953 -
CATSKILL CREEK New York Scour Critical, Countermeasures Installed Fair 1999 -
NORTH CREEK New York Scour Critical, Countermeasures Installed Fair 1940 -
ENGLISH RIVER New York Scour Critical, Countermeasures Installed Poor 1975 -
CROSS RIVER New York Scour Critical, Countermeasures Installed Fair 1950 -
SUGARLOAF BROOK New York Scour Critical, Countermeasures Installed Poor 1970 -
JACKSON BROOK New York Scour Critical, Countermeasures Installed Poor 1930 -
Mamaroneck River New York Scour Critical, Countermeasures Installed Fair 1980 -
CONNETQUOT BROOK New York Scour Critical, Countermeasures Installed Poor 1900 -
BANNISTER CREEK New York Scour Critical, Countermeasures Installed Fair 1952 -
W B OSWEGATCHIE R New York Scour Critical, Countermeasures Installed Fair 1945 -

Scour Critical Rating Codes

Code 2, UnaddressedBridge is scour critical with no countermeasures installed. The foundation is vulnerable and no protective action has been taken.
Code 3, Countermeasures InstalledProtective measures (riprap, sheet piling, etc.) have been installed to reduce scour risk, but the bridge remains classified as scour critical.
Code 6, Countermeasures IneffectiveProtective measures were installed but have been assessed as ineffective. The bridge requires re-evaluation and additional action.

About Scour Critical Bridges

Scour critical bridges have been identified through underwater inspection or analysis as having foundations that are unstable or could become unstable during flood conditions. FHWA requires action plans for all scour critical bridges. Famous scour failures include the 1987 Schoharie Creek Bridge collapse in New York.