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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
WAPWALLOPEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 1,314
OVER SPENCER CREEK Pennsylvania Scour Critical — Countermeasures Installed Good 1962 1,305
MILLERS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1890 1,300
N. MAHANOY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1961 1,300
Tri to Skippack Creek Pennsylvania Scour Critical — Countermeasures Installed Fair 2003 1,300
N. MAHANOY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1960 1,300
PEET BROOK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 1,289
LEGGETTS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1979 1,285
BRANCH SKIPPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1932 1,283
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1928 1,278
TRIB TO BILLINGS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 1,278
LITTLE MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1951 1,276
OVER STILLWATER CREEK BR Pennsylvania Scour Critical — Countermeasures Installed Fair 1954 1,276
OVER KIANTONE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1954 1,276
TRIBUTARY WARRIOR RUN Pennsylvania Scour Critical — Countermeasures Installed Good 1957 1,275
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 1,272
CLARION RIVER Pennsylvania Scour Critical — Countermeasures Installed Fair 1963 1,263
TRIB TO CHOCONUT CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1942 1,260
BR. OF PERKIOMEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1908 1,255
MONOCACY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1908 1,254
WEST BRANCH CHESTER CR. Pennsylvania Scour Critical — Countermeasures Installed Good 1973 1,254
LITTLE WAPWALLOPEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1940 1,253
IRISH CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1951 1,249
BRANCH OF BURGETTS FORK Pennsylvania Scour Critical — Countermeasures Installed Poor 1926 1,239
STONY RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1916 1,235
CRUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,233
OVER MOUSE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1922 1,228
LITTLE MUDDY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1951 1,217
EAST BR BRANDYWINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,212
SCHMOUTZ CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,206
WEST BR OF DYBERRY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,204
LITTLE LEHIGH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 1,201
STAFFORD MEADOW BROOK Pennsylvania Scour Critical — Countermeasures Installed Poor 1885 1,200
MARSH RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 1,200
OVER HARRISON RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1954 1,199
WEST BR GENESEE RIVER Pennsylvania Scour Critical — Countermeasures Installed Fair 1924 1,199
BLACKLICK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1953 1,196
BURGETTS FORK Pennsylvania Scour Critical — Countermeasures Installed Poor 1910 1,195
MCDONALD RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1939 1,194
TRIB TO BEAVER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 1,193
MARSHALL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1932 1,188
WANGUM BROOK Pennsylvania Scour Critical — Countermeasures Installed Poor 1935 1,187
OVER TR. CROOKED CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 1,186
TRIB TO TURTLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1951 1,179
SHEHAWKEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1948 1,179
WYSOX CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 1,168
DARK HOLLOW RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1993 1,168
PICKERING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 1,162
CHARTIERS RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1942 1,159
YELLOW BREECHES CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1854 1,158

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