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
ARMSTRONG CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1975 75
N FORK POWELL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1976 75
Blue Hole Creek Pennsylvania Scour Critical — Countermeasures Installed Poor 1950 75
SUNNY BROOK Pennsylvania Scour Critical — Countermeasures Installed Poor 1956 75
Welty Run Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 75
KEEN LAKE INLET Pennsylvania Scour Critical — Countermeasures Installed Poor 1942 75
LITTLE TUSCARORA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1938 75
MEADOW CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1915 75
LITTLE SHAMOKIN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1900 75
LAUREL RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 75
Thompson Run Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 75
S BR OF MIDDLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 75
W. BR. MAHANTANGO Pennsylvania Scour Critical — Countermeasures Installed Poor 1948 75
SALT LICK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1990 75
Little Wapwallopen Creek Pennsylvania Scour Critical — Countermeasures Installed Poor 1936 75
STARRUCCA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1945 75
OVER WINTON RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1953 75
MUDDY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1998 75
TENMILE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1954 75
SPRING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 73
SOUTH BR OF FRENCH CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1913 73
TOMS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 71
JONES CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1910 70
BRANCH BIG ELK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1963 70
KRATZER RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 70
NESCOPECK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 70
CHERRY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 68
DUNKARD CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1941 66
LITTLE MAHANTANGO CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1949 66
WHEELER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 66
WILCOX CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 65
SACONY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1905 65
CARLEY BROOK Pennsylvania Scour Critical — Countermeasures Installed Fair 1990 65
OVER REYNOLDS RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1960 65
N BR MUDDY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1991 64
SIX MILE RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1977 62
Turkey Run Pennsylvania Scour Critical — Countermeasures Installed Fair 1966 62
MEADOW RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1919 62
EQUINUNK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1895 60
LICK RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1905 60
TOBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1952 60
BROWNS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1903 60
TRIB. OF YOUGH. RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 60
HARMON CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1964 60
PINE CREEK NORTH BRANCH Pennsylvania Scour Critical — Countermeasures Installed Fair 1921 59
RUFF CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1915 57
TRIB SHAFFER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1973 56
BRADY RUN (S BRANCH) Pennsylvania Scour Critical — Countermeasures Installed Fair 1856 55
Meadow Run Pennsylvania Scour Critical — Countermeasures Installed Poor 1904 55
GREGS RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1900 55

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.