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
TOAD CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1966 400
LITTLE LEHIGH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1980 400
LITTLE LEHIGH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1960 400
SOUTH BR. SAUCON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1973 400
HAGERMANS RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1928 400
LILLIBRIDGE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1957 400
TRIB TO PIGEON CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1960 400
JOHNS BR RAYSTWN BR JUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 399
LITTLE SCHUYLKILL RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1928 398
CRANES RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 395
COLEGROVE BROOK Pennsylvania Scour Critical — Countermeasures Installed Poor 1927 395
PINE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1964 390
E. BR. BRANDYWINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1914 390
TRIBUTARY MIDDLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1944 388
SALT LICK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1905 384
EAST BR TUNKHANNOCK CRK Pennsylvania Scour Critical — Countermeasures Installed Fair 1962 383
OVER FRENCH CREEK W BR Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 382
STEWART RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1926 382
WEST BR MESHOPPEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1961 382
OVER BEAVER RUN Pennsylvania Scour Critical — Countermeasures Installed Good 1941 376
OVER TIDIOUTE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1910 376
BEAVER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1909 376
TRIBUTARY PIDCOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1900 375
TUNKHANNOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1942 375
QUITTAPAHILLA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1900 375
SNITZ CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 375
SCHAEFER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1971 374
OVER PADAN CREEK TRIB Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 372
W.BRANCH RATTLING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1974 372
W BRANCH OF RATTLING CR Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 372
RATTLING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1937 372
GRAVEL RUN Pennsylvania Scour Critical — Countermeasures Installed Good 1960 372
AQUASHICOLA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 370
AQUASHICOLA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 370
AQUASHICOLA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1927 370
OVER LITTLE GAP RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1952 370
BRANCH HARVEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1956 369
PUCKETA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1965 366
EAST BRANCH BIG ELK CR. Pennsylvania Scour Critical — Countermeasures Installed Fair 1928 364
TUB MILL RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1928 363
FOWLER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1990 363
TR.ELK LICK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 363
MCKEES RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1959 360
CLOVER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 359
BEAR ROCK RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1938 359
TUNKHANNOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 2000 357
WEST BR WALLENPAUPACK CR Pennsylvania Scour Critical — Countermeasures Installed Poor 1958 357
Trib to Northkill Ck Pennsylvania Scour Critical — Countermeasures Installed Fair 1922 357
SINDELDECKER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 356
CHERRY RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 355

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.