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
SHANNON RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1942 250
Munnell Run Pennsylvania Scour Critical — Countermeasures Installed Poor 1976 250
LITTLE SHAMOKIN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 250
PERKIOMEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1905 250
SWAMP CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1924 250
STONY RUN (HILLEGAS RUN) Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 250
CHERRY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 249
ACKERLY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1952 248
FIVEMILE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1932 247
ROARING RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1952 246
W BR OCTORARO CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 245
RUMMERFIELD CREEK Pennsylvania Scour Critical — Countermeasures Installed Good 1961 244
RUMMERFIELD CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1924 244
TRIB W BR LACKAWAX RIVER Pennsylvania Scour Critical — Countermeasures Installed Fair 1922 244
BLACKLEGS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1940 241
Yellow Creek Branch Pennsylvania Scour Critical — Countermeasures Installed Poor 1965 241
TUSCARORA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1938 240
FOREST LAKE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1949 240
BACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1940 240
FOREST LAKE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1939 240
BRANCH OF SKIPPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1969 240
OVER MUDDY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 239
HALLOWING RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1921 238
LOYALHANNA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 238
OVER BUCKS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 236
BLACKS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1941 236
MIDDLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 235
LITTLE TOBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1911 234
FINDLAY RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 231
SACONY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1900 230
LITTLE MUNCY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1957 228
BIG RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1956 227
TRIB TO LAKE CAREY Pennsylvania Scour Critical — Countermeasures Installed Poor 1934 227
PINE RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1936 227
BR.TOWN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1949 226
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 225
FELLS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 225
PORTAGE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 225
BOWMANS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1933 224
CRUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1956 224
BRANCH TUNKHANNOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 221
TRIB LITTLE SWATARA CK Pennsylvania Scour Critical — Countermeasures Installed Fair 1951 220
TOBYS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 220
PINEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1909 219
CHERRY RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1938 218
RAYSTOWN BR JUNIATA RIV Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 218
BR CONOWINGO CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 2005 215
TRIB TO CROOKED CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1939 214
Saul Run Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 214
OVER FRENCH CREEK TRIB Pennsylvania Scour Critical — Countermeasures Installed Fair 1904 213

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.