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Scour Critical Bridges in Pennsylvania

2,233 bridges in Pennsylvania 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 2,233 bridges in Pennsylvania have been identified as vulnerable to scour damage.

Clear
Bridge State Scour Status Condition Year Built ADT
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1965 9,578
SPRING MILL CREEK/3368E8 Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 9,504
SPENCER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1955 9,491
WATSON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1969 9,476
TROWBRIDGE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 9,450
DARBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1928 9,364
SUSQUEHANNA RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1914 9,300
POHOPOCO CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 9,256
SWAMP CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1947 9,235
MINE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1928 9,235
COOKS RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1926 9,221
WYALUSING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1970 9,182
BRANCH OF FRENCH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 9,113
PLUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1912 9,112
ROCK RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 9,029
WILLOW RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 9,021
CHESTER CREEK / 3694-J10 Pennsylvania Scour Critical — Countermeasures Installed Poor 1898 9,019
CLEARFIELD CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 8,758
EAST BR.RED CLAY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 8,686
TULPEHOCKEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1949 8,670
TOOKANY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1927 8,669
HOUGHS CREEK / 3039-B6 Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 8,655
W. BR. NESHAMINY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1927 8,535
LITTLE SWATARA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1966 8,530
BRANCH MARTINS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1957 8,523
BRANCH STONY CR/ 3256-A8 Pennsylvania Scour Critical — Countermeasures Installed Fair 1973 8,516
SANDY RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1931 8,478
TRIBUTARY MIDDLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 8,477
BRANCH RIDLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1946 8,472
LITTLE BUFFALO CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 8,458
POQUESSING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1970 8,438
SCHUYLKILL RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1935 8,408
WEST BR.CHESTER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1931 8,345
TRIB. BUSHKILL CR. Pennsylvania Scour Critical — Countermeasures Installed Fair 1953 8,242
LACKAWANNA RIVER Pennsylvania Scour Critical — Countermeasures Installed Fair 1957 8,200
KETTLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 8,101
CHERRY RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 8,009
MEADOWBROOK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1963 8,000
PICKERING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1969 7,961
PERKIOMEN CREEK/2917-D9 Pennsylvania Scour Critical — Countermeasures Installed Fair 1967 7,957
FISHING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1910 7,944
PLUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1956 7,943
RIDLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 7,934
FRENCH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1959 7,931
MANATAWNY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1951 7,884
BRANDYWINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1902 7,797
BRANDYWINE CREEK FLOOD Pennsylvania Scour Critical — Countermeasures Installed Good 1912 7,797
OVER MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1952 7,782
COPLAY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1921 7,751
CROWS RUN Pennsylvania Scour Critical — Countermeasures Installed Good 2002 7,719

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.

All Bridges Poor Condition Historic Bridges Bridge Stats