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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
COOKS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 831
FRYS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1857 831
OVER HUMMER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 827
SANDY RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1959 826
TRIB.W.BR.PERKIOMEN CREE Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 826
OVER SNOW CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 819
FOSTER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1943 818
CONEWAGO CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1936 816
FOWLER BROOK Pennsylvania Scour Critical — Countermeasures Installed Poor 1941 805
PINEY FORK Pennsylvania Scour Critical — Countermeasures Installed Fair 1902 803
Indian Creek Pennsylvania Scour Critical — Countermeasures Installed Poor 1918 800
TULPEHOCKEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 800
LITTLE BUFFALO CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1988 800
SNITZ CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1962 800
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 800
CORNPLANTER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1932 795
BUFFALO CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1935 795
NORTH SPRING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 792
RUSSELL RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1931 788
TRIB. TO MCMICHAEL CR. Pennsylvania Scour Critical — Countermeasures Installed Fair 1951 787
TRIB TO BUFFALO CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 785
GREGS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1927 782
GAZZAM RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 779
MARSH RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 775
BLACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1971 775
EAST BR LACKAWANNA RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1948 775
BRANCH OF UNAMI CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 772
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1931 770
HOLLISTER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1964 767
HOLLISTER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1964 767
DEWING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1940 765
BELLS RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1938 763
OVER WOODCOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1959 760
EAST BRANCH CODORUS CR Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 752
BRANCH LITTLE NESHAMINY Pennsylvania Scour Critical — Countermeasures Installed Fair 1984 750
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1972 750
CHIQUES CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1869 750
LITTLE LEHIGH CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1950 750
DARBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1970 750
Thompson Run Pennsylvania Scour Critical — Countermeasures Installed Fair 1985 750
PIGEON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1960 750
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1968 743
DEEP CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 742
WEST BR.BRANDYWINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1928 741
OVER BIG RUN TRIB Pennsylvania Scour Critical — Countermeasures Installed Poor 1910 741
OVER MOUSE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1946 740
SPRING RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 739
SCRUBGRASS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 737
MACOBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1931 731
LITTLE SEWICKLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1947 728

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