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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
DARBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1928 1,554
N BR PLUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1965 1,536
TRIB TO BEAVER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 1,536
W BR. WHITE CLAY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 1,530
OVER TWELVE MILE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 1,529
DUNNING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 1,524
BAREFOOT RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,524
WAPWALLOPEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1970 1,523
BRANCH OF DEEP RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1928 1,519
BLAIR GAP RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 1,514
RIDLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 1,505
SAW MILL RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1955 1,500
GULPH MILLS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1978 1,500
SWATARA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 1,500
OVER MILL RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1902 1,500
OVER MILL RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1916 1,500
VALLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 1,497
DOE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1966 1,494
BUCK RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1969 1,494
VALLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1918 1,492
LONG RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1958 1,489
PLUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1959 1,479
WEST BRANCH CHESTER CRK. Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 1,479
SPRING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1922 1,470
PINEY FORK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 1,458
IRONSTONE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1912 1,457
INNERS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1946 1,439
Pine Run Pennsylvania Scour Critical — Countermeasures Installed Poor 1935 1,437
W. BRANCH BIG ELK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1924 1,431
MANATAWNY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1939 1,424
OVER SOUTH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1954 1,418
OVER CROOKED CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1936 1,409
KIPPS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 1,408
SPROGELS RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1932 1,404
BLACK DITCH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 1,400
BRANCH OF SWABIA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1929 1,400
MARSH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1905 1,399
PIKE RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1916 1,392
OVER TRIB TO MUD CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1942 1,387
TRIBUTARY TO MUD CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1932 1,387
OVER SWEITZERS RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1948 1,383
OVER HUNTER RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1959 1,381
RAUSCH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1912 1,370
RAUSCH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1912 1,370
LITTLE EQUINUNK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1932 1,363
ROCK RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1962 1,360
OVER CALDWELL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 1,356
POCOPSON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 1,356
SAW MILL RUN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1900 1,350
MANADA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 1,321

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