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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
TEN MILE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1939 21,197
PIGEON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1948 21,192
TACONY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 21,032
MOLASSES CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1955 20,666
SLAB CABIN RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1932 20,393
LITTLE CONESTOGA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1927 20,141
MINE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1951 19,593
Cobbs Creek Pennsylvania Scour Critical — Countermeasures Installed Fair 1948 19,500
TOWAMENCIN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1986 19,455
ABERS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1952 19,380
PINE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 19,355
TOWAMENCIN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1962 19,293
MUCKINIPATTUS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1925 19,177
BRANCH WISSAHICKON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1957 18,982
UNAMI CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1965 18,805
WHITE CLAY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1927 18,776
THOMPSON RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1959 18,741
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 18,527
COBBS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1924 18,222
COBBS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1924 18,222
EAST BR. BRANDYWINE CK. Pennsylvania Scour Critical — Countermeasures Installed Poor 1921 18,163
WEST BRANCH BIG ELK CR. Pennsylvania Scour Critical — Countermeasures Installed Fair 1968 18,144
CRUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1926 18,095
PENNYPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1918 17,735
LITTLE CACOOSING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1947 17,731
BRANCH NESHAMINY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1973 17,386
SUSQ RIVER RR SR 2037 Pennsylvania Scour Critical — Countermeasures Installed Poor 1924 17,383
NORTH BR.NESHAMINY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1939 17,187
TROUT/MASCHELLAMAC CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1874 17,059
Thompson Run Pennsylvania Scour Critical — Countermeasures Installed Poor 1924 16,904
ROCK RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1957 16,902
LEAFS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1967 16,823
CACOOSING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 16,737
MANOR CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1947 16,678
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 16,498
W BR BRANDYWINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1914 16,027
WISSAHICKON CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1888 15,917
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1932 15,720
AQUETONG CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1939 15,615
TOBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 15,449
TOBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1941 15,449
SYCAMORE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1926 15,217
LITTLE BLACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1928 15,032
BRANCH PENNYPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1967 14,968
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1977 14,925
MILL-RACE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 14,824
BRANCH PENNYPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 14,809
BRANCH DELAWARE RIVER Pennsylvania Scour Critical — Countermeasures Installed Fair 1942 14,803
SCHUYLKILL RIV;NSRC;ROAD Pennsylvania Scour Critical — Countermeasures Installed Fair 1924 14,759
TRIB.WILLOW CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1955 14,685

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