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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
BIG SEWICKLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1900 10
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1992 10
WAPPASENING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1912 10
MORAVIAN RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1915 10
BROWN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1905 10
DUTCH RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 10
North Deer Creek Pennsylvania Scour Critical — Countermeasures Installed Poor 1987 10
MARSHALL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1912 10
BUSHKILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 10
ELK RUN WEST Pennsylvania Scour Critical — Countermeasures Installed Fair 1925 10
BEAVER DAM CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1910 10
LITTLE LEHIGH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1998 10
TRIB BIG SEWICKLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 10
LITTLE WAPWALLOPEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1935 10
Two Mile Run Pennsylvania Scour Critical — Countermeasures Installed Poor 1976 10
Two Mile Run Pennsylvania Scour Critical — Countermeasures Installed Fair 1976 10
BLACKBURN RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 7
LITTLE CLEARFIELD CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1919 5
SLATE RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1933 5
FISHPOT RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 5
SOUTH BR. CALKINS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1970 4
MOSHANNON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 2
TWO LICK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 —
BIG RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1915 —
TROUT RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1977 —
LACKAWANNA RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1950 —
OSWAYO CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1908 —
KISH. CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1909 —
GLADE RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1904 —
RDG.BLUE MT.NOR RR SCH.R Pennsylvania Scour Critical — Countermeasures Installed Poor 1890 —
BEAVER RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1915 —
SOLOMON CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 —
BUCKWHA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1901 —

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