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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
HOP BOTTOM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1962 1,154
CULBERTSON RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 1,154
SANATOGA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1931 1,153
POCOPSON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 1,148
TRIB TO BUFFALO CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,147
E BR BRANDYWINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1939 1,146
SWATARA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1936 1,144
POND CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 1,134
PEGS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 1,132
BEAVER RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1910 1,130
BEAVER DAM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1951 1,128
OVER BULLY RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1926 1,125
TOHICKON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1966 1,124
STONEY RUN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1926 1,122
LICK RUN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1901 1,115
MCMICHAEL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1910 1,114
OVER WILSON RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1957 1,114
TRIBUTARY OF BRUSH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1957 1,110
KENDALL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1954 1,106
OVER BROWN RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1931 1,105
TRIB TO PINE RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1921 1,103
REDSTONE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1978 1,100
OVER LITTLE SANDY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1955 1,100
Rowe Run Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,098
N BR SLIPPERY ROCK CR Pennsylvania Scour Critical — Countermeasures Installed Fair 1951 1,081
MAIDEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1966 1,078
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1937 1,073
PATCHIN RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1953 1,073
CHIQUES CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 1,072
TRIB TO CONESTOGA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 1,069
OFFICERS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 1,068
COWANSHANNOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1962 1,065
BRANCH LEECH RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,065
PLUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1960 1,057
OYSTERVILLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1924 1,053
SYCAMORE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 1,041
LITTLE BULL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1972 1,033
SO BR TUNKHANNOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1931 1,022
OVER QUAKER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1913 1,018
OVER MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1953 1,012
MARTINS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1911 1,002
CATASAUQUA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 1,000
PENNYPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1932 1,000
CEDAR CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1824 1,000
LITTLE NESHAMINY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1965 1,000
East Branch Stony Creek Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 1,000
MONOCACY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1949 1,000
PENNYPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1995 1,000
Mill Creek Pennsylvania Scour Critical — Countermeasures Installed Fair 1960 1,000
DARK RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1960 1,000

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