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
LICKING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1935 3,124
HUNLOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 3,114
WEST BR.CHESTER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1973 3,108
BEAVER RIVER Pennsylvania Scour Critical — Countermeasures Installed Fair 1905 3,051
LAUREL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 3,032
TROUT CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 3,029
UNAMI CREEK / 2806-E4 Pennsylvania Scour Critical — Countermeasures Installed Poor 1890 3,005
SHOVELSBURG RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 3,004
MEADOW BROOK Pennsylvania Scour Critical — Countermeasures Installed Fair 1931 3,000
LETORT SPRING RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1978 3,000
LITTLE SCHUYLKILL RIVER Pennsylvania Scour Critical — Countermeasures Installed Fair 1893 3,000
SWAMP CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1939 3,000
WEBB CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1962 2,997
FRENCH CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1856 2,994
SKIPPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1908 2,965
LITTLE NESHAMINY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1959 2,952
CHAMPION CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1942 2,947
ELDER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1952 2,942
SWAMP BROOK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1958 2,932
HAZLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1961 2,928
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1915 2,927
CHERRY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 2,917
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 2,917
EAST BRANCH RED CLAY CR. Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 2,912
OVER INLET CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1934 2,904
VALLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1912 2,897
BUCK RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1926 2,896
TRIB TO PENNS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 2,889
HOSENSACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1933 2,882
BEAVER DAM RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1953 2,830
SANDY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 2,818
LABORDE BRANCH SANDY CR Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 2,818
BRANCH BRANDYWINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1935 2,802
TRIB LITTLE SWATARA CK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 2,801
SHAMONA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1965 2,800
MORGAN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1922 2,800
OVER SPRUCE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1948 2,792
OVER LITTLE SUGAR CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1985 2,773
OVER LITTLE SUGAR CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1985 2,773
BUCK RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 2,763
SUGAR CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1919 2,748
SUGAR CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 2,748
SUGAR CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1919 2,748
SUGAR CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 2,748
LITTLE ANDERSON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1921 2,732
GLADDENS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1927 2,723
TRIB OF E BR CODORUS CR Pennsylvania Scour Critical — Countermeasures Installed Poor 1941 2,695
OVER MARSH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1925 2,670
MAHANTANGO CREEK Pennsylvania Scour Critical — Countermeasures Installed Good 1930 2,660
LACKAWANNA RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1961 2,658

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.