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
TAYLORS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1956 11,986
LACKAWANNA RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1958 11,900
COPLAY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1910 11,880
LITTLE BULL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1970 11,736
TOWAMENCIN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1855 11,616
WISSAHICKON CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1964 11,591
PERKIOMEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1798 11,474
LITTLE NORTHKILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1932 11,432
BRANCH PENNYPACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1973 11,408
BRCH PENNYPACK CR/3259A2 Pennsylvania Scour Critical — Countermeasures Installed Fair 1958 11,408
OVER TROUT RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1953 11,349
PROPHECY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1926 11,333
TRIB TO BUFFALO CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1960 11,269
POCOPSON CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1937 11,166
LONG RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1960 11,163
BEAVER CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1928 11,160
CHESTER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1966 11,154
PICKERING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 11,149
EAST BR. RED CLAY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1962 11,141
JORDAN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1932 11,127
WYOMISSING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1931 11,125
FRENCH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1953 11,100
BLAIR GAP RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1955 11,038
LITTLE AQUASHICOLA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1922 10,968
BEAVER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 10,965
MORGAN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 10,965
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1960 10,840
SARVER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 10,782
NORTH BRANCH SUSQ RIVER Pennsylvania Scour Critical — Countermeasures Installed Good 2000 10,761
MONOCACY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1923 10,672
KREUTZ CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1970 10,619
ALLEGHENY CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1956 10,331
OVER SR 3020 & ELK CK. Pennsylvania Scour Critical — Countermeasures Installed Fair 1969 10,274
ROCK RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1954 10,266
ITHAN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 10,128
CABIN RUN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 10,089
OVER MAHONING CR. Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 10,026
SLOAT BROOK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 10,020
Pennypack Creek Pennsylvania Scour Critical — Countermeasures Installed Poor 1907 10,000
LODAL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1947 9,993
STONY CREEK / 3255-J5 Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 9,921
BRANCH NESHAMINY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1936 9,883
BRANCH OF PENNYPACK CRK Pennsylvania Scour Critical — Countermeasures Installed Poor 1958 9,860
ELIZABETH RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1968 9,847
TR.LAUREL CK Pennsylvania Scour Critical — Countermeasures Installed Fair 1929 9,745
TROWBRIDGE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 9,678
FURNACE RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 9,664
BEAVER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 9,622
OVER BULL RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 9,622
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1965 9,578

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.